nix-prefetch-pijul: always show the state

As Pijul’s stable reference, downstream scripts *will* wish to have
access to this value.

Author: toastal

pkgs/build-support/fetchpijul/nix-prefetch-pijul

@@ -100,6 +100,11 @@ if [ -z "$final_path" ]; then
 
 	cd "$tmp_clone"
 	pijul clone $clone_args "$remote" "$name"
+	# State is a stable reference is a stable reference for the patchset that
+	# doesn't depend on patch order. As a result, it will always be included.
+	if [ -z "$state" ]; then
+		state="$(pijul log --repository "$tmp_clone/$name" --state --limit 1 | awk '/^State:/ {printf $2}')"
+	fi
 	rm -rf "$tmp_clone/$name/.pijul"
 
 	hash="$(nix-hash --type "$hash_algo" "$hash_format" "$tmp_clone/$name")"
@@ -125,10 +130,8 @@ EOF
 if [ -n "$change" ]; then cat <<EOF
 	"change": $(json_escape "$change"),
 EOF
-elif [ -n "$state" ]; then cat <<EOF
-	"state": $(json_escape "$state"),
-EOF
 fi; cat <<EOF
+	"state": $(json_escape "$state"),
 	"path": "$final_path",
 	$(json_escape "$hash_algo"): $(json_escape "$hash"),
 	"hash": "$(nix-hash --to-sri --type "$hash_algo" "$hash")"

pkgs/tools/package-management/nix-prefetch-scripts/default.nix

@@ -83,6 +83,7 @@ rec {
     subversion
   ];
   nix-prefetch-pijul = mkPrefetchScript "pijul" ../../../build-support/fetchpijul/nix-prefetch-pijul [
+    gawk
     pijul
     cacert
     jq