ci: msys2 template

Author: scivision

.github/workflows/ci.yml

@@ -8,6 +8,12 @@ on:
     paths:
     - "**.py"
     - ".github/workflows/ci.yml"
+  workflow_dispatch:
+
+# avoid wasted runs
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
 
@@ -17,10 +23,10 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest]
-        python: ['3.9', '3.11']
+        python: ['3.9', '3.12']
 
     env:
-      FC: gfortran-12
+      FC: gfortran-14
 
     runs-on: ${{ matrix.os }}
     steps:
@@ -44,14 +50,15 @@ jobs:
 
       steps:
       - uses: msys2/setup-msys2@v2
+        id: msys2
         with:
           update: true
           install: >-
-            mingw-w64-x86_64-gcc-fortran
+            mingw-w64-ucrt-x86_64-gcc-fortran
       # Github actions Gfortran in default image is messed up.
 
       - name: Put MSYS2_MinGW64 on PATH
-        run: echo "${{ runner.temp }}/msys64/mingw64/bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
+        run: echo "${{ steps.msys2.outputs.msys2-location }}/ucrt64/bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
 
       - uses: actions/setup-python@v5
         with: