Try null instead of default

Author: topolarity

.github/workflows/system.yml

@@ -18,7 +18,7 @@ jobs:
           - macos-15-intel
           - macos-latest
           - windows-latest
-        architecture: [default]
+        architecture: [null]
         python-version: ['3.x']
         julia-version:
           - '1'
@@ -31,15 +31,15 @@ jobs:
             julia-version: '1'
           # Sweep python-version and julia-version only on Ubuntu:
           - os: ubuntu-latest
-            architecture: default
+            architecture: null
             python-version: '3.10'
             julia-version: '1'
           - os: ubuntu-latest
-            architecture: default
+            architecture: null
             python-version: '3.x'
             julia-version: '1.5'
           - os: ubuntu-latest
-            architecture: default
+            architecture: null
             python-version: '3.x'
             julia-version: '1.4'
       fail-fast: false
@@ -50,12 +50,6 @@ jobs:
     steps:
       - uses: actions/checkout@v1
       - name: Setup python
-        if: matrix.architecture == 'default'
-        uses: actions/setup-python@v6
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Setup python
-        if: matrix.architecture != 'default'
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
@@ -66,13 +60,6 @@ jobs:
         run: python -m pip install virtualenv
       - run: virtualenv --version
       - name: Setup julia
-        if: matrix.architecture == 'default'
-        uses: julia-actions/setup-julia@v1
-        with:
-          version: ${{ matrix.julia-version }}
-          show-versioninfo: true
-      - name: Setup julia
-        if: matrix.architecture != 'default'
         uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.julia-version }}