build without Fortran

Author: lucascolley

.github/workflows/no-fortran.yml

@@ -0,0 +1,38 @@
+name: No Fortran compiler build
+
+on:
+  pull_request:
+
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
+jobs:
+  no_fortran:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      with:
+        submodules: recursive
+
+    - uses: prefix-dev/setup-pixi@ba3bb36eb2066252b2363392b7739741bb777659 # v0.8.1
+      with:
+        pixi-version: v0.62.0
+        run-install: false
+
+    - name: Install test environment
+      run: pixi global install --with=pyyaml --environment=test python pytest
+
+    - name: Build and install SciPy
+      run: pixi global install --environment=test --path .
+    
+    - name: Show SciPy config
+      run: python -c 'import scipy; scipy.show_config()'
+    
+    - name: Test `scipy.linalg`
+      run: |
+        python -c "
+          import scipy, pytest
+          from pathlib import Path
+          linalg = Path(scipy.linalg.__file__).parent
+          pytest.main(linalg)
+        "

pixi.toml

@@ -3,8 +3,37 @@ name = "scipy"
 description = "Fundamental algorithms for scientific computing in Python."
 authors = ["SciPy Developers <scipy-dev@python.org>"]
 channels = ["https://prefix.dev/conda-forge"]
-platforms = ["linux-64", "osx-arm64", "win-64"]
+# platforms = ["linux-64", "osx-arm64", "win-64"]
+platforms = ["osx-arm64"]
+preview = ["pixi-build"]
+
+[package]
+license = "BSD-3-Clause"
+
+[package.build.backend]
+name = "pixi-build-python"
+version = "*"
+
+[package.build.config]
+compilers = ["c", "cxx"]
+env.BUILD_EDITABLE_PYTHON = "false"
+env.CXXFLAGS = "${CXXFLAGS} -D_LIBCPP_DISABLE_AVAILABILITY"
+
+[package.host-dependencies]
+python = "*"
+meson = "*"
+meson-python = "*"
+pkg-config = "*"
+cmake = "*"
+numpy = "*"
+cython = "*"
+pythran = "*"
+openblas = "*"
+pybind11 = "*"
+uv = "*"
 
+[package.run-dependencies]
+numpy = "*"
 
 ### Environments ###
 # We include one build task (and a corresponding environment) per solve group