Add CI configuration which builds library with -fpython3-config

Author: Shimuuar

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ defaults:
 
 jobs:
   cabal:
-    name: ${{ matrix.os }} / GHC ${{ matrix.ghc }} / ${{ matrix.python-version }}
+    name: ${{ matrix.os }} / GHC ${{ matrix.ghc }} / ${{ matrix.python-version }} / ${{ matrix.cabal-flags }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
@@ -29,6 +29,8 @@ jobs:
           - { cabal: "3.14", os: ubuntu-latest,  ghc: "9.10.2", python-version: "3.12" }
           - { cabal: "3.14", os: ubuntu-latest,  ghc: "9.10.2", python-version: "3.13" }
           - { cabal: "3.14", os: ubuntu-latest,  ghc: "9.10.2", python-version: "3.14" }
+          # Build with python3-config instead of pkg-config
+          - { cabal: "3.14", os: ubuntu-latest,  ghc: "9.10.2", python-version: "3.12", cabal-flags: "-fpython3-config" }
       fail-fast: false
     steps:
     # ----------------
@@ -58,6 +60,8 @@ jobs:
         python -V
         pkg-config python3-embed --cflags
         pkg-config python3-embed --libs
+        python3-config --cflags
+        python3-config --libs
     # ----------------
     - name: Make sdist
       run: |
@@ -77,7 +81,7 @@ jobs:
       run: |
         if [ "${{ matrix.skip-test  }}" == "" ]; then FLAG_TEST=--enable-test; fi
         if [ "${{ matrix.skip-bench }}" == "" ]; then FLAG_BENCH=--enable-benchmarks; fi
-        cabal configure $FLAG_TEST $FLAG_BENCH
+        cabal configure $FLAG_TEST $FLAG_BENCH ${{ matrix.cabal-flags }}
         cabal build all --write-ghc-environment-files=always
     # ----------------
     - name: Test