diff --git a/Dockerfile b/Dockerfile
index e074e6321c55f..757528b52affa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -764,7 +764,34 @@ function common::get_constraints_location() {
         echo
         echo "${COLOR_BLUE}Downloading constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} to ${HOME}/constraints.txt ${COLOR_RESET}"
         echo
-        curl -sSf -o "${HOME}/constraints.txt" "${AIRFLOW_CONSTRAINTS_LOCATION}"
+        local http_code
+        if http_code=$(curl -sS -L -o "${HOME}/constraints.txt" -w "%{http_code}" "${AIRFLOW_CONSTRAINTS_LOCATION}"); then
+            if [[ ${http_code} == "200" ]]; then
+                return
+            fi
+            if [[ ${http_code} == "404" \
+                && ${ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE:="false"} == "true" \
+                && ${AIRFLOW_FALLBACK_NO_CONSTRAINTS_INSTALLATION:="false"} == "true" ]]; then
+                echo
+                echo "${COLOR_YELLOW}Constraints file not found at ${AIRFLOW_CONSTRAINTS_LOCATION}.${COLOR_RESET}"
+                echo "${COLOR_YELLOW}Using an empty constraints file because bootstrap mode was explicitly enabled.${COLOR_RESET}"
+                echo
+                AIRFLOW_CONSTRAINTS_LOCATION=""
+                : > "${HOME}/constraints.txt"
+                return
+            fi
+            echo
+            echo "${COLOR_RED}Failed to download constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} (HTTP ${http_code}).${COLOR_RESET}"
+            if [[ ${http_code} == "404" ]]; then
+                echo "${COLOR_RED}Only bootstrap builds should set both ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE=true and AIRFLOW_FALLBACK_NO_CONSTRAINTS_INSTALLATION=true.${COLOR_RESET}"
+            fi
+            echo
+            return 1
+        fi
+        echo
+        echo "${COLOR_RED}Failed to download constraints from ${AIRFLOW_CONSTRAINTS_LOCATION}.${COLOR_RESET}"
+        echo
+        return 1
     else
         echo
         echo "${COLOR_BLUE}Copying constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} to ${HOME}/constraints.txt ${COLOR_RESET}"
diff --git a/Dockerfile.ci b/Dockerfile.ci
index 0cf6fafd96774..e137fa71cdc6d 100644
--- a/Dockerfile.ci
+++ b/Dockerfile.ci
@@ -704,7 +704,34 @@ function common::get_constraints_location() {
         echo
         echo "${COLOR_BLUE}Downloading constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} to ${HOME}/constraints.txt ${COLOR_RESET}"
         echo
-        curl -sSf -o "${HOME}/constraints.txt" "${AIRFLOW_CONSTRAINTS_LOCATION}"
+        local http_code
+        if http_code=$(curl -sS -L -o "${HOME}/constraints.txt" -w "%{http_code}" "${AIRFLOW_CONSTRAINTS_LOCATION}"); then
+            if [[ ${http_code} == "200" ]]; then
+                return
+            fi
+            if [[ ${http_code} == "404" \
+                && ${ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE:="false"} == "true" \
+                && ${AIRFLOW_FALLBACK_NO_CONSTRAINTS_INSTALLATION:="false"} == "true" ]]; then
+                echo
+                echo "${COLOR_YELLOW}Constraints file not found at ${AIRFLOW_CONSTRAINTS_LOCATION}.${COLOR_RESET}"
+                echo "${COLOR_YELLOW}Using an empty constraints file because bootstrap mode was explicitly enabled.${COLOR_RESET}"
+                echo
+                AIRFLOW_CONSTRAINTS_LOCATION=""
+                : > "${HOME}/constraints.txt"
+                return
+            fi
+            echo
+            echo "${COLOR_RED}Failed to download constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} (HTTP ${http_code}).${COLOR_RESET}"
+            if [[ ${http_code} == "404" ]]; then
+                echo "${COLOR_RED}Only bootstrap builds should set both ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE=true and AIRFLOW_FALLBACK_NO_CONSTRAINTS_INSTALLATION=true.${COLOR_RESET}"
+            fi
+            echo
+            return 1
+        fi
+        echo
+        echo "${COLOR_RED}Failed to download constraints from ${AIRFLOW_CONSTRAINTS_LOCATION}.${COLOR_RESET}"
+        echo
+        return 1
     else
         echo
         echo "${COLOR_BLUE}Copying constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} to ${HOME}/constraints.txt ${COLOR_RESET}"
diff --git a/dev/breeze/doc/images/output_release-management_generate-constraints.svg b/dev/breeze/doc/images/output_release-management_generate-constraints.svg
index 46cfb481b7801..75276c2db05dc 100644
--- a/dev/breeze/doc/images/output_release-management_generate-constraints.svg
+++ b/dev/breeze/doc/images/output_release-management_generate-constraints.svg
@@ -1,4 +1,4 @@
-<svg class="rich-terminal" viewBox="0 0 1482 757.5999999999999" xmlns="http://www.w3.org/2000/svg">
+<svg class="rich-terminal" viewBox="0 0 1482 904.0" xmlns="http://www.w3.org/2000/svg">
     <!-- Generated with Rich https://www.textualize.io -->
     <style>
 
@@ -43,7 +43,7 @@
 
     <defs>
     <clipPath id="breeze-release-management-generate-constraints-clip-terminal">
-      <rect x="0" y="0" width="1463.0" height="706.5999999999999" />
+      <rect x="0" y="0" width="1463.0" height="853.0" />
     </clipPath>
     <clipPath id="breeze-release-management-generate-constraints-line-0">
     <rect x="0" y="1.5" width="1464" height="24.65"/>
@@ -129,9 +129,27 @@
 <clipPath id="breeze-release-management-generate-constraints-line-27">
     <rect x="0" y="660.3" width="1464" height="24.65"/>
             </clipPath>
+<clipPath id="breeze-release-management-generate-constraints-line-28">
+    <rect x="0" y="684.7" width="1464" height="24.65"/>
+            </clipPath>
+<clipPath id="breeze-release-management-generate-constraints-line-29">
+    <rect x="0" y="709.1" width="1464" height="24.65"/>
+            </clipPath>
+<clipPath id="breeze-release-management-generate-constraints-line-30">
+    <rect x="0" y="733.5" width="1464" height="24.65"/>
+            </clipPath>
+<clipPath id="breeze-release-management-generate-constraints-line-31">
+    <rect x="0" y="757.9" width="1464" height="24.65"/>
+            </clipPath>
+<clipPath id="breeze-release-management-generate-constraints-line-32">
+    <rect x="0" y="782.3" width="1464" height="24.65"/>
+            </clipPath>
+<clipPath id="breeze-release-management-generate-constraints-line-33">
+    <rect x="0" y="806.7" width="1464" height="24.65"/>
+            </clipPath>
     </defs>
 
-    <rect fill="#292929" stroke="rgba(255,255,255,0.35)" stroke-width="1" x="1" y="1" width="1480" height="755.6" rx="8"/><text class="breeze-release-management-generate-constraints-title" fill="#c5c8c6" text-anchor="middle" x="740" y="27">Command:&#160;release-management&#160;generate-constraints</text>
+    <rect fill="#292929" stroke="rgba(255,255,255,0.35)" stroke-width="1" x="1" y="1" width="1480" height="902" rx="8"/><text class="breeze-release-management-generate-constraints-title" fill="#c5c8c6" text-anchor="middle" x="740" y="27">Command:&#160;release-management&#160;generate-constraints</text>
             <g transform="translate(26,22)">
             <circle cx="0" cy="0" r="7" fill="#ff5f57"/>
             <circle cx="22" cy="0" r="7" fill="#febc2e"/>
@@ -147,29 +165,35 @@
 </text><text class="breeze-release-management-generate-constraints-r1" x="12.2" y="93.2" textLength="1000.4" clip-path="url(#breeze-release-management-generate-constraints-line-3)">Generates&#160;pinned&#160;constraint&#160;files&#160;with&#160;all&#160;extras&#160;from&#160;pyproject.toml&#160;in&#160;parallel.</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="93.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-3)">
 </text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="117.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-4)">
 </text><text class="breeze-release-management-generate-constraints-r5" x="0" y="142" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-5)">╭─</text><text class="breeze-release-management-generate-constraints-r5" x="24.4" y="142" textLength="341.6" clip-path="url(#breeze-release-management-generate-constraints-line-5)">&#160;Generate&#160;constraints&#160;flags&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="366" y="142" textLength="1073.6" clip-path="url(#breeze-release-management-generate-constraints-line-5)">────────────────────────────────────────────────────────────────────────────────────────</text><text class="breeze-release-management-generate-constraints-r5" x="1439.6" y="142" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-5)">─╮</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="142" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-5)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="166.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="166.4" textLength="317.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">--airflow-constraints-mode</text><text class="breeze-release-management-generate-constraints-r1" x="414.8" y="166.4" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-6)">Mode&#160;of&#160;constraints&#160;for&#160;Airflow&#160;for&#160;CI&#160;image&#160;building.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1085.8" y="166.4" textLength="122" clip-path="url(#breeze-release-management-generate-constraints-line-6)">[default:&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="166.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="166.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="190.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">│</text><text class="breeze-release-management-generate-constraints-r5" x="414.8" y="190.8" textLength="353.8" clip-path="url(#breeze-release-management-generate-constraints-line-7)">constraints-source-providers]</text><text class="breeze-release-management-generate-constraints-r6" x="780.8" y="190.8" textLength="561.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">(constraints-source-providers&#160;|&#160;constraints&#160;|&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="190.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="190.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="215.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">│</text><text class="breeze-release-management-generate-constraints-r6" x="414.8" y="215.2" textLength="305" clip-path="url(#breeze-release-management-generate-constraints-line-8)">constraints-no-providers)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="215.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="215.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="239.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="239.6" textLength="317.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">--github-repository&#160;&#160;&#160;&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="366" y="239.6" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-9)">-g</text><text class="breeze-release-management-generate-constraints-r1" x="414.8" y="239.6" textLength="597.8" clip-path="url(#breeze-release-management-generate-constraints-line-9)">GitHub&#160;repository&#160;used&#160;to&#160;pull,&#160;push&#160;run&#160;images.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1012.6" y="239.6" textLength="305" clip-path="url(#breeze-release-management-generate-constraints-line-9)">[default:&#160;apache/airflow]</text><text class="breeze-release-management-generate-constraints-r6" x="1329.8" y="239.6" textLength="73.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">(TEXT)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="239.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="239.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="264" textLength="317.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">--python&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="366" y="264" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-10)">-p</text><text class="breeze-release-management-generate-constraints-r1" x="414.8" y="264" textLength="744.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">Python&#160;major/minor&#160;version&#160;used&#160;in&#160;Airflow&#160;image&#160;for&#160;images.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1159" y="264" textLength="183" clip-path="url(#breeze-release-management-generate-constraints-line-10)">[default:&#160;3.10]</text><text class="breeze-release-management-generate-constraints-r6" x="1354.2" y="264" textLength="85.4" clip-path="url(#breeze-release-management-generate-constraints-line-10)">(&gt;3.10&lt;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="288.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">│</text><text class="breeze-release-management-generate-constraints-r6" x="414.8" y="288.4" textLength="256.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">|&#160;3.11&#160;|&#160;3.12&#160;|&#160;3.13)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="288.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="288.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="312.8" textLength="97.6" clip-path="url(#breeze-release-management-generate-constraints-line-12)">--use-uv</text><text class="breeze-release-management-generate-constraints-r1" x="122" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">/</text><text class="breeze-release-management-generate-constraints-r4" x="134.2" y="312.8" textLength="134.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">--no-use-uv</text><text class="breeze-release-management-generate-constraints-r1" x="414.8" y="312.8" textLength="732" clip-path="url(#breeze-release-management-generate-constraints-line-12)">Use&#160;uv&#160;instead&#160;of&#160;pip&#160;as&#160;packaging&#160;tool&#160;to&#160;build&#160;the&#160;image.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1146.8" y="312.8" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-12)">[default:&#160;use-uv]</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="337.2" textLength="1464" clip-path="url(#breeze-release-management-generate-constraints-line-13)">╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="337.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-13)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="361.6" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-14)">╭─</text><text class="breeze-release-management-generate-constraints-r5" x="24.4" y="361.6" textLength="219.6" clip-path="url(#breeze-release-management-generate-constraints-line-14)">&#160;Parallel&#160;running&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="244" y="361.6" textLength="1195.6" clip-path="url(#breeze-release-management-generate-constraints-line-14)">──────────────────────────────────────────────────────────────────────────────────────────────────</text><text class="breeze-release-management-generate-constraints-r5" x="1439.6" y="361.6" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-14)">─╮</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="361.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-14)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="386" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-15)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="386" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-15)">--debug-resources</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="386" textLength="768.6" clip-path="url(#breeze-release-management-generate-constraints-line-15)">Whether&#160;to&#160;show&#160;resource&#160;information&#160;while&#160;running&#160;in&#160;parallel.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="386" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-15)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="386" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-15)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="410.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="410.4" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-16)">--parallelism&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="410.4" textLength="927.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">Maximum&#160;number&#160;of&#160;processes&#160;to&#160;use&#160;while&#160;running&#160;the&#160;operation&#160;in&#160;parallel.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1183.4" y="410.4" textLength="146.4" clip-path="url(#breeze-release-management-generate-constraints-line-16)">[default:&#160;4]</text><text class="breeze-release-management-generate-constraints-r6" x="1342" y="410.4" textLength="97.6" clip-path="url(#breeze-release-management-generate-constraints-line-16)">(INTEGER</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="410.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="410.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">│</text><text class="breeze-release-management-generate-constraints-r6" x="256.2" y="434.8" textLength="170.8" clip-path="url(#breeze-release-management-generate-constraints-line-17)">RANGE&#160;1&lt;=x&lt;=8)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="459.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-18)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="459.2" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-18)">--python-versions</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="459.2" textLength="963.8" clip-path="url(#breeze-release-management-generate-constraints-line-18)">Space&#160;separated&#160;list&#160;of&#160;python&#160;versions&#160;used&#160;for&#160;build&#160;with&#160;multiple&#160;versions.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1220" y="459.2" textLength="183" clip-path="url(#breeze-release-management-generate-constraints-line-18)">[default:&#160;3.10&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="459.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-18)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="459.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-18)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="483.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-19)">│</text><text class="breeze-release-management-generate-constraints-r5" x="256.2" y="483.6" textLength="183" clip-path="url(#breeze-release-management-generate-constraints-line-19)">3.11&#160;3.12&#160;3.13]</text><text class="breeze-release-management-generate-constraints-r6" x="451.4" y="483.6" textLength="73.2" clip-path="url(#breeze-release-management-generate-constraints-line-19)">(TEXT)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="483.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-19)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="483.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-19)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="508" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-20)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="508" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-20)">--run-in-parallel</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="508" textLength="854" clip-path="url(#breeze-release-management-generate-constraints-line-20)">Run&#160;the&#160;operation&#160;in&#160;parallel&#160;on&#160;all&#160;or&#160;selected&#160;subset&#160;of&#160;parameters.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="508" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-20)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="508" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-20)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="532.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-21)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="532.4" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-21)">--skip-cleanup&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="532.4" textLength="732" clip-path="url(#breeze-release-management-generate-constraints-line-21)">Skip&#160;cleanup&#160;of&#160;temporary&#160;files&#160;created&#160;during&#160;parallel&#160;run.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="532.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-21)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="532.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-21)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="556.8" textLength="1464" clip-path="url(#breeze-release-management-generate-constraints-line-22)">╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="556.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-22)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="581.2" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-23)">╭─</text><text class="breeze-release-management-generate-constraints-r5" x="24.4" y="581.2" textLength="195.2" clip-path="url(#breeze-release-management-generate-constraints-line-23)">&#160;Common&#160;options&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="219.6" y="581.2" textLength="1220" clip-path="url(#breeze-release-management-generate-constraints-line-23)">────────────────────────────────────────────────────────────────────────────────────────────────────</text><text class="breeze-release-management-generate-constraints-r5" x="1439.6" y="581.2" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-23)">─╮</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="581.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-23)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="605.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-24)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="605.6" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-24)">--verbose</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="605.6" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-24)">-v</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="605.6" textLength="585.6" clip-path="url(#breeze-release-management-generate-constraints-line-24)">Print&#160;verbose&#160;information&#160;about&#160;performed&#160;steps.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="605.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-24)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="605.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-24)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="630" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="630" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-25)">--dry-run</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="630" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-25)">-D</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="630" textLength="719.8" clip-path="url(#breeze-release-management-generate-constraints-line-25)">If&#160;dry-run&#160;is&#160;set,&#160;commands&#160;are&#160;only&#160;printed,&#160;not&#160;executed.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="630" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="630" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="654.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-26)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="654.4" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-26)">--answer&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="654.4" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-26)">-a</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="654.4" textLength="329.4" clip-path="url(#breeze-release-management-generate-constraints-line-26)">Force&#160;answer&#160;to&#160;questions.&#160;</text><text class="breeze-release-management-generate-constraints-r6" x="536.8" y="654.4" textLength="353.8" clip-path="url(#breeze-release-management-generate-constraints-line-26)">(y&#160;|&#160;n&#160;|&#160;q&#160;|&#160;yes&#160;|&#160;no&#160;|&#160;quit)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="654.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-26)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="654.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-26)">
-</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="678.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-27)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="678.8" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-27)">--help&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="678.8" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-27)">-h</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="678.8" textLength="329.4" clip-path="url(#breeze-release-management-generate-constraints-line-27)">Show&#160;this&#160;message&#160;and&#160;exit.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="678.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-27)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="678.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-27)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="166.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="166.4" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-6)">--airflow-constraints-mode&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="166.4" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-6)">Mode&#160;of&#160;constraints&#160;for&#160;Airflow&#160;for&#160;CI&#160;image&#160;building.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="166.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="166.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-6)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="190.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">│</text><text class="breeze-release-management-generate-constraints-r5" x="768.6" y="190.8" textLength="475.8" clip-path="url(#breeze-release-management-generate-constraints-line-7)">[default:&#160;constraints-source-providers]</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="190.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="190.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-7)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="215.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">│</text><text class="breeze-release-management-generate-constraints-r6" x="768.6" y="215.2" textLength="561.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">(constraints-source-providers&#160;|&#160;constraints&#160;|&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="215.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="215.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-8)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="239.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">│</text><text class="breeze-release-management-generate-constraints-r6" x="768.6" y="239.6" textLength="305" clip-path="url(#breeze-release-management-generate-constraints-line-9)">constraints-no-providers)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="239.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="239.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-9)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="264" textLength="500.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">--allow-missing-previous-constraints-file</text><text class="breeze-release-management-generate-constraints-r1" x="524.6" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">/</text><text class="breeze-release-management-generate-constraints-r4" x="536.8" y="264" textLength="158.6" clip-path="url(#breeze-release-management-generate-constraints-line-10)">--no-allow-mi</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="264" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-10)">Allow&#160;bootstrapping&#160;constraints&#160;when&#160;no&#160;previous&#160;file&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="264" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-10)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="288.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="288.4" textLength="378.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">ssing-previous-constraints-file</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="288.4" textLength="463.6" clip-path="url(#breeze-release-management-generate-constraints-line-11)">exists&#160;on&#160;the&#160;constraints&#160;branch&#160;yet.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1232.2" y="288.4" textLength="122" clip-path="url(#breeze-release-management-generate-constraints-line-11)">[default:&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="288.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="288.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-11)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">│</text><text class="breeze-release-management-generate-constraints-r5" x="768.6" y="312.8" textLength="524.6" clip-path="url(#breeze-release-management-generate-constraints-line-12)">no-allow-missing-previous-constraints-file]</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="312.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-12)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="337.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-13)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="337.2" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-13)">--github-repository&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="719.8" y="337.2" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-13)">-g</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="337.2" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-13)">GitHub&#160;repository&#160;used&#160;to&#160;pull,&#160;push&#160;run&#160;images.&#160;&#160;&#160;&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="337.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-13)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="337.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-13)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="361.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-14)">│</text><text class="breeze-release-management-generate-constraints-r5" x="768.6" y="361.6" textLength="305" clip-path="url(#breeze-release-management-generate-constraints-line-14)">[default:&#160;apache/airflow]</text><text class="breeze-release-management-generate-constraints-r6" x="1085.8" y="361.6" textLength="73.2" clip-path="url(#breeze-release-management-generate-constraints-line-14)">(TEXT)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="361.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-14)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="361.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-14)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="386" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-15)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="386" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-15)">--python&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="719.8" y="386" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-15)">-p</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="386" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-15)">Python&#160;major/minor&#160;version&#160;used&#160;in&#160;Airflow&#160;image&#160;for&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="386" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-15)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="386" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-15)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="410.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">│</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="410.4" textLength="97.6" clip-path="url(#breeze-release-management-generate-constraints-line-16)">images.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="866.2" y="410.4" textLength="183" clip-path="url(#breeze-release-management-generate-constraints-line-16)">[default:&#160;3.10]</text><text class="breeze-release-management-generate-constraints-r6" x="1061.4" y="410.4" textLength="353.8" clip-path="url(#breeze-release-management-generate-constraints-line-16)">(&gt;3.10&lt;&#160;|&#160;3.11&#160;|&#160;3.12&#160;|&#160;3.13)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="410.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="410.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-16)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="434.8" textLength="97.6" clip-path="url(#breeze-release-management-generate-constraints-line-17)">--use-uv</text><text class="breeze-release-management-generate-constraints-r1" x="122" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">/</text><text class="breeze-release-management-generate-constraints-r4" x="134.2" y="434.8" textLength="134.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">--no-use-uv</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="434.8" textLength="671" clip-path="url(#breeze-release-management-generate-constraints-line-17)">Use&#160;uv&#160;instead&#160;of&#160;pip&#160;as&#160;packaging&#160;tool&#160;to&#160;build&#160;the&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="434.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-17)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="459.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-18)">│</text><text class="breeze-release-management-generate-constraints-r1" x="768.6" y="459.2" textLength="85.4" clip-path="url(#breeze-release-management-generate-constraints-line-18)">image.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="854" y="459.2" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-18)">[default:&#160;use-uv]</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="459.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-18)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="459.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-18)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="483.6" textLength="1464" clip-path="url(#breeze-release-management-generate-constraints-line-19)">╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="483.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-19)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="508" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-20)">╭─</text><text class="breeze-release-management-generate-constraints-r5" x="24.4" y="508" textLength="219.6" clip-path="url(#breeze-release-management-generate-constraints-line-20)">&#160;Parallel&#160;running&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="244" y="508" textLength="1195.6" clip-path="url(#breeze-release-management-generate-constraints-line-20)">──────────────────────────────────────────────────────────────────────────────────────────────────</text><text class="breeze-release-management-generate-constraints-r5" x="1439.6" y="508" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-20)">─╮</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="508" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-20)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="532.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-21)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="532.4" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-21)">--debug-resources</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="532.4" textLength="768.6" clip-path="url(#breeze-release-management-generate-constraints-line-21)">Whether&#160;to&#160;show&#160;resource&#160;information&#160;while&#160;running&#160;in&#160;parallel.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="532.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-21)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="532.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-21)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="556.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-22)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="556.8" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-22)">--parallelism&#160;&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="556.8" textLength="927.2" clip-path="url(#breeze-release-management-generate-constraints-line-22)">Maximum&#160;number&#160;of&#160;processes&#160;to&#160;use&#160;while&#160;running&#160;the&#160;operation&#160;in&#160;parallel.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1183.4" y="556.8" textLength="146.4" clip-path="url(#breeze-release-management-generate-constraints-line-22)">[default:&#160;4]</text><text class="breeze-release-management-generate-constraints-r6" x="1342" y="556.8" textLength="97.6" clip-path="url(#breeze-release-management-generate-constraints-line-22)">(INTEGER</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="556.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-22)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="556.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-22)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="581.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-23)">│</text><text class="breeze-release-management-generate-constraints-r6" x="256.2" y="581.2" textLength="170.8" clip-path="url(#breeze-release-management-generate-constraints-line-23)">RANGE&#160;1&lt;=x&lt;=8)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="581.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-23)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="581.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-23)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="605.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-24)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="605.6" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-24)">--python-versions</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="605.6" textLength="963.8" clip-path="url(#breeze-release-management-generate-constraints-line-24)">Space&#160;separated&#160;list&#160;of&#160;python&#160;versions&#160;used&#160;for&#160;build&#160;with&#160;multiple&#160;versions.&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1220" y="605.6" textLength="183" clip-path="url(#breeze-release-management-generate-constraints-line-24)">[default:&#160;3.10&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="605.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-24)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="605.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-24)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="630" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">│</text><text class="breeze-release-management-generate-constraints-r5" x="256.2" y="630" textLength="183" clip-path="url(#breeze-release-management-generate-constraints-line-25)">3.11&#160;3.12&#160;3.13]</text><text class="breeze-release-management-generate-constraints-r6" x="451.4" y="630" textLength="73.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">(TEXT)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="630" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="630" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-25)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="654.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-26)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="654.4" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-26)">--run-in-parallel</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="654.4" textLength="854" clip-path="url(#breeze-release-management-generate-constraints-line-26)">Run&#160;the&#160;operation&#160;in&#160;parallel&#160;on&#160;all&#160;or&#160;selected&#160;subset&#160;of&#160;parameters.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="654.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-26)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="654.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-26)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="678.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-27)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="678.8" textLength="207.4" clip-path="url(#breeze-release-management-generate-constraints-line-27)">--skip-cleanup&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r1" x="256.2" y="678.8" textLength="732" clip-path="url(#breeze-release-management-generate-constraints-line-27)">Skip&#160;cleanup&#160;of&#160;temporary&#160;files&#160;created&#160;during&#160;parallel&#160;run.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="678.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-27)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="678.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-27)">
 </text><text class="breeze-release-management-generate-constraints-r5" x="0" y="703.2" textLength="1464" clip-path="url(#breeze-release-management-generate-constraints-line-28)">╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="703.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-28)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="727.6" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-29)">╭─</text><text class="breeze-release-management-generate-constraints-r5" x="24.4" y="727.6" textLength="195.2" clip-path="url(#breeze-release-management-generate-constraints-line-29)">&#160;Common&#160;options&#160;</text><text class="breeze-release-management-generate-constraints-r5" x="219.6" y="727.6" textLength="1220" clip-path="url(#breeze-release-management-generate-constraints-line-29)">────────────────────────────────────────────────────────────────────────────────────────────────────</text><text class="breeze-release-management-generate-constraints-r5" x="1439.6" y="727.6" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-29)">─╮</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="727.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-29)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="752" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-30)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="752" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-30)">--verbose</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="752" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-30)">-v</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="752" textLength="585.6" clip-path="url(#breeze-release-management-generate-constraints-line-30)">Print&#160;verbose&#160;information&#160;about&#160;performed&#160;steps.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="752" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-30)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="752" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-30)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="776.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-31)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="776.4" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-31)">--dry-run</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="776.4" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-31)">-D</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="776.4" textLength="719.8" clip-path="url(#breeze-release-management-generate-constraints-line-31)">If&#160;dry-run&#160;is&#160;set,&#160;commands&#160;are&#160;only&#160;printed,&#160;not&#160;executed.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="776.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-31)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="776.4" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-31)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="800.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-32)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="800.8" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-32)">--answer&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="800.8" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-32)">-a</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="800.8" textLength="329.4" clip-path="url(#breeze-release-management-generate-constraints-line-32)">Force&#160;answer&#160;to&#160;questions.&#160;</text><text class="breeze-release-management-generate-constraints-r6" x="536.8" y="800.8" textLength="353.8" clip-path="url(#breeze-release-management-generate-constraints-line-32)">(y&#160;|&#160;n&#160;|&#160;q&#160;|&#160;yes&#160;|&#160;no&#160;|&#160;quit)</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="800.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-32)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="800.8" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-32)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="825.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-33)">│</text><text class="breeze-release-management-generate-constraints-r4" x="24.4" y="825.2" textLength="109.8" clip-path="url(#breeze-release-management-generate-constraints-line-33)">--help&#160;&#160;&#160;</text><text class="breeze-release-management-generate-constraints-r7" x="158.6" y="825.2" textLength="24.4" clip-path="url(#breeze-release-management-generate-constraints-line-33)">-h</text><text class="breeze-release-management-generate-constraints-r1" x="207.4" y="825.2" textLength="329.4" clip-path="url(#breeze-release-management-generate-constraints-line-33)">Show&#160;this&#160;message&#160;and&#160;exit.</text><text class="breeze-release-management-generate-constraints-r5" x="1451.8" y="825.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-33)">│</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="825.2" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-33)">
+</text><text class="breeze-release-management-generate-constraints-r5" x="0" y="849.6" textLength="1464" clip-path="url(#breeze-release-management-generate-constraints-line-34)">╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯</text><text class="breeze-release-management-generate-constraints-r1" x="1464" y="849.6" textLength="12.2" clip-path="url(#breeze-release-management-generate-constraints-line-34)">
 </text>
     </g>
     </g>
diff --git a/dev/breeze/doc/images/output_release-management_generate-constraints.txt b/dev/breeze/doc/images/output_release-management_generate-constraints.txt
index f439d99b97cf8..e3219e23b2f0f 100644
--- a/dev/breeze/doc/images/output_release-management_generate-constraints.txt
+++ b/dev/breeze/doc/images/output_release-management_generate-constraints.txt
@@ -1 +1 @@
-d2e02029e8c5926285fa012fe1525fb5
+e3c96b0331416e63c5d8ca1d20281a17
diff --git a/dev/breeze/src/airflow_breeze/commands/release_management_commands.py b/dev/breeze/src/airflow_breeze/commands/release_management_commands.py
index 66c24ffe0dfa3..f103f2ac0f76c 100644
--- a/dev/breeze/src/airflow_breeze/commands/release_management_commands.py
+++ b/dev/breeze/src/airflow_breeze/commands/release_management_commands.py
@@ -1368,6 +1368,14 @@ def tag_providers(
 @option_debug_resources
 @option_python_versions
 @option_airflow_constraints_mode_ci
+@click.option(
+    "--allow-missing-previous-constraints-file/--no-allow-missing-previous-constraints-file",
+    is_flag=True,
+    default=False,
+    show_default=True,
+    envvar="ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE",
+    help="Allow bootstrapping constraints when no previous file exists on the constraints branch yet.",
+)
 @option_github_repository
 @option_use_uv
 @option_verbose
@@ -1375,6 +1383,7 @@ def tag_providers(
 @option_answer
 def generate_constraints(
     airflow_constraints_mode: str,
+    allow_missing_previous_constraints_file: bool,
     debug_resources: bool,
     github_repository: str,
     parallelism: int,
@@ -1419,6 +1428,7 @@ def generate_constraints(
         shell_params_list = [
             ShellParams(
                 airflow_constraints_mode=airflow_constraints_mode,
+                allow_missing_previous_constraints_file=allow_missing_previous_constraints_file,
                 github_repository=github_repository,
                 python=python,
                 use_uv=use_uv,
@@ -1437,6 +1447,7 @@ def generate_constraints(
     else:
         shell_params = ShellParams(
             airflow_constraints_mode=airflow_constraints_mode,
+            allow_missing_previous_constraints_file=allow_missing_previous_constraints_file,
             github_repository=github_repository,
             python=python,
             use_uv=use_uv,
diff --git a/dev/breeze/src/airflow_breeze/commands/release_management_commands_config.py b/dev/breeze/src/airflow_breeze/commands/release_management_commands_config.py
index 87f0419f0181f..62cd04b478f1c 100644
--- a/dev/breeze/src/airflow_breeze/commands/release_management_commands_config.py
+++ b/dev/breeze/src/airflow_breeze/commands/release_management_commands_config.py
@@ -301,6 +301,7 @@
             "name": "Generate constraints flags",
             "options": [
                 "--airflow-constraints-mode",
+                "--allow-missing-previous-constraints-file",
                 "--github-repository",
                 "--python",
                 "--use-uv",
diff --git a/dev/breeze/src/airflow_breeze/params/shell_params.py b/dev/breeze/src/airflow_breeze/params/shell_params.py
index ead7c7c408c44..a25ea622f8f48 100644
--- a/dev/breeze/src/airflow_breeze/params/shell_params.py
+++ b/dev/breeze/src/airflow_breeze/params/shell_params.py
@@ -164,6 +164,7 @@ class ShellParams:
     airflow_constraints_mode: str = ALLOWED_CONSTRAINTS_MODES_CI[0]
     airflow_constraints_reference: str = ""
     airflow_extras: str = ""
+    allow_missing_previous_constraints_file: bool = False
     allow_pre_releases: bool = False
     auth_manager: str = ALLOWED_AUTH_MANAGERS[0]
     backend: str = ALLOWED_BACKENDS[0]
@@ -625,6 +626,11 @@ def env_variables_for_docker_commands(self) -> dict[str, str]:
             _set_var(_env, "AIRFLOW__EDGE__API_URL", f"http://localhost:{port}/edge_worker/v1/rpcapi")
         _set_var(_env, "ANSWER", get_forced_answer() or "")
         _set_var(_env, "ALLOW_PRE_RELEASES", self.allow_pre_releases)
+        _set_var(
+            _env,
+            "ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE",
+            self.allow_missing_previous_constraints_file,
+        )
         _set_var(_env, "BACKEND", self.backend)
         if self.backend == "custom":
             _set_var(_env, "AIRFLOW__DATABASE__SQL_ALCHEMY_CONN", self.custom_db_url or None)
diff --git a/dev/breeze/tests/test_release_management_commands.py b/dev/breeze/tests/test_release_management_commands.py
new file mode 100644
index 0000000000000..a65d4db3fa0ec
--- /dev/null
+++ b/dev/breeze/tests/test_release_management_commands.py
@@ -0,0 +1,52 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+from __future__ import annotations
+
+from airflow_breeze.utils.confirm import Answer
+
+
+def test_generate_constraints_forwards_allow_missing_previous_constraints_file(monkeypatch):
+    import airflow_breeze.commands.release_management_commands as module
+
+    captured_shell_params = {}
+
+    monkeypatch.setattr(module, "perform_environment_checks", lambda: None)
+    monkeypatch.setattr(module, "check_remote_ghcr_io_commands", lambda: None)
+    monkeypatch.setattr(module, "fix_ownership_using_docker", lambda: None)
+    monkeypatch.setattr(module, "cleanup_python_generated_files", lambda: None)
+    monkeypatch.setattr(module, "user_confirm", lambda *args, **kwargs: Answer.YES)
+
+    def fake_run_generate_constraints(shell_params, output):
+        captured_shell_params["value"] = shell_params
+        return 0, "constraints-source-providers:3.14"
+
+    monkeypatch.setattr(module, "run_generate_constraints", fake_run_generate_constraints)
+
+    module.generate_constraints.callback(
+        airflow_constraints_mode="constraints-source-providers",
+        allow_missing_previous_constraints_file=True,
+        debug_resources=False,
+        github_repository="apache/airflow",
+        parallelism=1,
+        python="3.14",
+        python_versions="3.14",
+        run_in_parallel=False,
+        skip_cleanup=False,
+        use_uv=True,
+    )
+
+    assert captured_shell_params["value"].allow_missing_previous_constraints_file is True
diff --git a/dev/breeze/tests/test_shell_params.py b/dev/breeze/tests/test_shell_params.py
index ffc0dc56e5bf8..1bd28c2cd581f 100644
--- a/dev/breeze/tests/test_shell_params.py
+++ b/dev/breeze/tests/test_shell_params.py
@@ -158,6 +158,14 @@
             },
             id="PYTHONWARNINGS should not be set by default",
         ),
+        pytest.param(
+            {},
+            {"allow_missing_previous_constraints_file": True},
+            {
+                "ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE": "true",
+            },
+            id="allow missing previous constraints file",
+        ),
         pytest.param(
             {"PYTHONWARNINGS": "default"},
             {},
diff --git a/scripts/docker/common.sh b/scripts/docker/common.sh
index 66a3b61e865e1..b34ee6f21df19 100644
--- a/scripts/docker/common.sh
+++ b/scripts/docker/common.sh
@@ -117,7 +117,34 @@ function common::get_constraints_location() {
         echo
         echo "${COLOR_BLUE}Downloading constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} to ${HOME}/constraints.txt ${COLOR_RESET}"
         echo
-        curl -sSf -o "${HOME}/constraints.txt" "${AIRFLOW_CONSTRAINTS_LOCATION}"
+        local http_code
+        if http_code=$(curl -sS -L -o "${HOME}/constraints.txt" -w "%{http_code}" "${AIRFLOW_CONSTRAINTS_LOCATION}"); then
+            if [[ ${http_code} == "200" ]]; then
+                return
+            fi
+            if [[ ${http_code} == "404" \
+                && ${ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE:="false"} == "true" \
+                && ${AIRFLOW_FALLBACK_NO_CONSTRAINTS_INSTALLATION:="false"} == "true" ]]; then
+                echo
+                echo "${COLOR_YELLOW}Constraints file not found at ${AIRFLOW_CONSTRAINTS_LOCATION}.${COLOR_RESET}"
+                echo "${COLOR_YELLOW}Using an empty constraints file because bootstrap mode was explicitly enabled.${COLOR_RESET}"
+                echo
+                AIRFLOW_CONSTRAINTS_LOCATION=""
+                : > "${HOME}/constraints.txt"
+                return
+            fi
+            echo
+            echo "${COLOR_RED}Failed to download constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} (HTTP ${http_code}).${COLOR_RESET}"
+            if [[ ${http_code} == "404" ]]; then
+                echo "${COLOR_RED}Only bootstrap builds should set both ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE=true and AIRFLOW_FALLBACK_NO_CONSTRAINTS_INSTALLATION=true.${COLOR_RESET}"
+            fi
+            echo
+            return 1
+        fi
+        echo
+        echo "${COLOR_RED}Failed to download constraints from ${AIRFLOW_CONSTRAINTS_LOCATION}.${COLOR_RESET}"
+        echo
+        return 1
     else
         echo
         echo "${COLOR_BLUE}Copying constraints from ${AIRFLOW_CONSTRAINTS_LOCATION} to ${HOME}/constraints.txt ${COLOR_RESET}"
diff --git a/scripts/in_container/run_generate_constraints.py b/scripts/in_container/run_generate_constraints.py
index b22ade34305ac..cb7780bf66f30 100755
--- a/scripts/in_container/run_generate_constraints.py
+++ b/scripts/in_container/run_generate_constraints.py
@@ -101,6 +101,7 @@
 @dataclass
 class ConfigParams:
     airflow_constraints_mode: str
+    allow_missing_previous_constraints_file: bool
     constraints_github_repository: str
     default_constraints_branch: str
     github_actions: bool
@@ -201,7 +202,7 @@ def freeze_distributions_to_file(
     console.print(f"[green]Constraints generated to file: {file.name}. Wrote {count_lines} lines")
 
 
-def download_latest_constraint_file(config_params: ConfigParams):
+def download_latest_constraint_file(config_params: ConfigParams) -> bool:
     constraints_url = (
         "https://api.github.com/repos/"
         f"{config_params.constraints_github_repository}/contents/"
@@ -215,11 +216,40 @@ def download_latest_constraint_file(config_params: ConfigParams):
     else:
         console.print("[bright_blue]No GITHUB_TOKEN - using non-authenticated request.")
     console.print(f"[bright_blue]Downloading constraints file from {constraints_url}")
-    r = requests.get(constraints_url, timeout=60, headers=headers)
-    r.raise_for_status()
+    try:
+        r = requests.get(constraints_url, timeout=60, headers=headers)
+        r.raise_for_status()
+    except requests.HTTPError as ex:
+        status_code = ex.response.status_code if ex.response is not None else "unknown"
+        console.print(
+            "[red]Failed to download previous constraints file "
+            f"{config_params.airflow_constraints_mode}-{config_params.python}.txt "
+            f"from branch {config_params.default_constraints_branch} "
+            f"(HTTP {status_code}).[/]"
+        )
+        if ex.response is not None and ex.response.status_code == 404:
+            if config_params.allow_missing_previous_constraints_file:
+                config_params.latest_constraints_file.unlink(missing_ok=True)
+                console.print(
+                    "[yellow]No previous constraints file exists for this mode/python combination. "
+                    "Skipping diff because bootstrap mode was explicitly enabled via "
+                    "`--allow-missing-previous-constraints-file`.[/]"
+                )
+                return False
+            console.print(
+                "[yellow]If this is the first constraints file for a new Python version or constraints mode, "
+                "rerun with `--allow-missing-previous-constraints-file` to skip the diff intentionally.[/]"
+            )
+        raise
+    except requests.RequestException as ex:
+        console.print(
+            f"[red]Error while downloading previous constraints file from {constraints_url}: {ex}[/]"
+        )
+        raise
     with config_params.latest_constraints_file.open("w") as constraints_file:
         constraints_file.write(r.text)
     console.print(f"[green]Downloaded constraints file from {constraints_url} to {constraints_file.name}")
+    return True
 
 
 def diff_constraints(config_params: ConfigParams) -> None:
@@ -317,8 +347,11 @@ def generate_constraints_source_providers(config_params: ConfigParams) -> None:
     with config_params.current_constraints_file.open("w") as constraints_file:
         constraints_file.write(SOURCE_PROVIDERS_CONSTRAINTS_PREFIX)
         freeze_distributions_to_file(config_params, constraints_file)
-    download_latest_constraint_file(config_params)
-    diff_constraints(config_params)
+    if download_latest_constraint_file(config_params):
+        diff_constraints(config_params)
+    else:
+        config_params.constraints_diff_file.unlink(missing_ok=True)
+        console.print("[yellow]Skipping constraints diff because no previous constraints file was found.[/]")
 
 
 def get_locally_build_distribution_specs() -> list[str]:
@@ -405,8 +438,11 @@ def generate_constraints_pypi_providers(config_params: ConfigParams) -> None:
         freeze_distributions_to_file(
             config_params, constraints_file, distributions_to_exclude_from_constraints
         )
-    download_latest_constraint_file(config_params)
-    diff_constraints(config_params)
+    if download_latest_constraint_file(config_params):
+        diff_constraints(config_params)
+    else:
+        config_params.constraints_diff_file.unlink(missing_ok=True)
+        console.print("[yellow]Skipping constraints diff because no previous constraints file was found.[/]")
 
 
 def generate_constraints_no_providers(config_params: ConfigParams) -> None:
@@ -423,8 +459,11 @@ def generate_constraints_no_providers(config_params: ConfigParams) -> None:
     with config_params.current_constraints_file.open("w") as constraints_file:
         constraints_file.write(NO_PROVIDERS_CONSTRAINTS_PREFIX)
         freeze_distributions_to_file(config_params, constraints_file)
-    download_latest_constraint_file(config_params)
-    diff_constraints(config_params)
+    if download_latest_constraint_file(config_params):
+        diff_constraints(config_params)
+    else:
+        config_params.constraints_diff_file.unlink(missing_ok=True)
+        console.print("[yellow]Skipping constraints diff because no previous constraints file was found.[/]")
 
 
 ALLOWED_CONSTRAINTS_MODES = ["constraints", "constraints-source-providers", "constraints-no-providers"]
@@ -465,6 +504,14 @@ def generate_constraints_no_providers(config_params: ConfigParams) -> None:
     envvar="PYTHON_MAJOR_MINOR_VERSION",
     help="Python major.minor version",
 )
+@click.option(
+    "--allow-missing-previous-constraints-file/--no-allow-missing-previous-constraints-file",
+    is_flag=True,
+    default=False,
+    show_default=True,
+    envvar="ALLOW_MISSING_PREVIOUS_CONSTRAINTS_FILE",
+    help="Allow generating constraints when no previous file exists on the constraints branch yet.",
+)
 @click.option(
     "--use-uv/--no-use-uv",
     is_flag=True,
@@ -474,6 +521,7 @@ def generate_constraints_no_providers(config_params: ConfigParams) -> None:
 )
 def generate_constraints(
     airflow_constraints_mode: str,
+    allow_missing_previous_constraints_file: bool,
     constraints_github_repository: str,
     default_constraints_branch: str,
     github_actions: bool,
@@ -482,6 +530,7 @@ def generate_constraints(
 ) -> None:
     config_params = ConfigParams(
         airflow_constraints_mode=airflow_constraints_mode,
+        allow_missing_previous_constraints_file=allow_missing_previous_constraints_file,
         constraints_github_repository=constraints_github_repository,
         default_constraints_branch=default_constraints_branch,
         github_actions=github_actions,
diff --git a/scripts/pyproject.toml b/scripts/pyproject.toml
index bbcc8749bd21d..7813cb4d91b89 100644
--- a/scripts/pyproject.toml
+++ b/scripts/pyproject.toml
@@ -51,6 +51,7 @@ dependencies = [
     "pyyaml>=6.0.3",
     "requests>=2.31.0",
     "rich>=13.6.0",
+    "rich-click>=1.9.7",
     "tabulate>=0.9.0",
     "termcolor>=2.3.0",
 ]
@@ -73,4 +74,4 @@ packages = ["ci", "cov", "docker", "in_container", "tools"]
 # "." makes ci.prek.* importable as packages; "ci/prek" makes bare
 # "from common_prek_utils import ..." inside those modules resolve correctly
 # (mirroring what Python does automatically when scripts are run directly).
-pythonpath = [".", "ci/prek"]
+pythonpath = [".", "ci/prek", "in_container"]
diff --git a/scripts/tests/scripts/in_container/__init__.py b/scripts/tests/scripts/in_container/__init__.py
new file mode 100644
index 0000000000000..13a83393a9124
--- /dev/null
+++ b/scripts/tests/scripts/in_container/__init__.py
@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
diff --git a/scripts/tests/scripts/in_container/test_run_generate_constraints.py b/scripts/tests/scripts/in_container/test_run_generate_constraints.py
new file mode 100644
index 0000000000000..2f75eb0755f02
--- /dev/null
+++ b/scripts/tests/scripts/in_container/test_run_generate_constraints.py
@@ -0,0 +1,139 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+from __future__ import annotations
+
+import importlib.util
+import sys
+from pathlib import Path
+from unittest.mock import Mock
+
+import pytest
+import requests
+
+MODULE_PATH = Path(__file__).resolve().parents[4] / "scripts" / "in_container" / "run_generate_constraints.py"
+
+
+@pytest.fixture
+def constraints_module(tmp_path, monkeypatch):
+    module_name = "test_run_generate_constraints_module"
+    sys.modules.pop(module_name, None)
+
+    # run_generate_constraints.py reads provider_dependencies.json at module level.
+    # Patch AIRFLOW_ROOT_PATH before exec_module so the `from in_container_utils import`
+    # picks up the temp path and the read_text() call succeeds.
+    fake_root = tmp_path / "airflow_root"
+    (fake_root / "generated").mkdir(parents=True)
+    (fake_root / "generated" / "provider_dependencies.json").write_text("{}")
+
+    import in_container_utils
+
+    monkeypatch.setattr(in_container_utils, "AIRFLOW_ROOT_PATH", fake_root)
+    spec = importlib.util.spec_from_file_location(module_name, MODULE_PATH)
+    module = importlib.util.module_from_spec(spec)
+    assert spec.loader is not None
+    sys.modules[module_name] = module
+    spec.loader.exec_module(module)
+    return module
+
+
+@pytest.fixture
+def temp_constraints_dir(tmp_path, constraints_module, monkeypatch):
+    monkeypatch.setattr(constraints_module.ConfigParams, "constraints_dir", property(lambda self: tmp_path))
+    return tmp_path
+
+
+def _config(constraints_module, *, allow_missing_previous_constraints_file: bool):
+    return constraints_module.ConfigParams(
+        airflow_constraints_mode="constraints-source-providers",
+        allow_missing_previous_constraints_file=allow_missing_previous_constraints_file,
+        constraints_github_repository="apache/airflow",
+        default_constraints_branch="constraints-main",
+        github_actions=False,
+        python="3.14",
+    )
+
+
+def _http_error(status_code: int) -> requests.HTTPError:
+    response = requests.Response()
+    response.status_code = status_code
+    return requests.HTTPError(f"{status_code} failure", response=response)
+
+
+def test_download_latest_constraint_file_skips_missing_baseline_when_allowed(
+    constraints_module, monkeypatch, temp_constraints_dir
+):
+    config_params = _config(constraints_module, allow_missing_previous_constraints_file=True)
+    response = Mock()
+    response.raise_for_status.side_effect = _http_error(404)
+    mock_console = Mock()
+
+    monkeypatch.setattr(constraints_module, "console", mock_console)
+    monkeypatch.setattr(constraints_module.requests, "get", Mock(return_value=response))
+    monkeypatch.delenv("GITHUB_TOKEN", raising=False)
+
+    assert constraints_module.download_latest_constraint_file(config_params) is False
+    assert not config_params.latest_constraints_file.exists()
+    assert any(
+        "--allow-missing-previous-constraints-file" in str(call.args[0])
+        for call in mock_console.print.call_args_list
+    )
+
+
+def test_download_latest_constraint_file_raises_with_guidance_without_override(
+    constraints_module, monkeypatch, temp_constraints_dir
+):
+    config_params = _config(constraints_module, allow_missing_previous_constraints_file=False)
+    response = Mock()
+    response.raise_for_status.side_effect = _http_error(404)
+    mock_console = Mock()
+
+    monkeypatch.setattr(constraints_module, "console", mock_console)
+    monkeypatch.setattr(constraints_module.requests, "get", Mock(return_value=response))
+    monkeypatch.delenv("GITHUB_TOKEN", raising=False)
+
+    with pytest.raises(requests.HTTPError):
+        constraints_module.download_latest_constraint_file(config_params)
+
+    assert any(
+        "--allow-missing-previous-constraints-file" in str(call.args[0])
+        for call in mock_console.print.call_args_list
+    )
+
+
+def test_generate_constraints_source_providers_skips_diff_without_previous_file(
+    constraints_module, monkeypatch, temp_constraints_dir
+):
+    config_params = _config(constraints_module, allow_missing_previous_constraints_file=True)
+    mock_console = Mock()
+    diff_constraints = Mock()
+
+    monkeypatch.setattr(constraints_module, "console", mock_console)
+    monkeypatch.setattr(
+        constraints_module,
+        "freeze_distributions_to_file",
+        lambda _config_params, constraints_file, _distributions=None: constraints_file.write(
+            "example==1.0.0\n"
+        ),
+    )
+    monkeypatch.setattr(constraints_module, "download_latest_constraint_file", Mock(return_value=False))
+    monkeypatch.setattr(constraints_module, "diff_constraints", diff_constraints)
+
+    constraints_module.generate_constraints_source_providers(config_params)
+
+    assert config_params.current_constraints_file.exists()
+    diff_constraints.assert_not_called()
+    assert any("Skipping constraints diff" in str(call.args[0]) for call in mock_console.print.call_args_list)
diff --git a/uv.lock b/uv.lock
index 6865efadd8888..5cab276c5e038 100644
--- a/uv.lock
+++ b/uv.lock
@@ -7565,6 +7565,7 @@ dependencies = [
     { name = "pyyaml" },
     { name = "requests" },
     { name = "rich" },
+    { name = "rich-click" },
     { name = "tabulate" },
     { name = "termcolor" },
 ]
@@ -7584,6 +7585,7 @@ requires-dist = [
     { name = "pyyaml", specifier = ">=6.0.3" },
     { name = "requests", specifier = ">=2.31.0" },
     { name = "rich", specifier = ">=13.6.0" },
+    { name = "rich-click", specifier = ">=1.9.7" },
     { name = "tabulate", specifier = ">=0.9.0" },
     { name = "termcolor", specifier = ">=2.3.0" },
 ]