ci: msys2 template

Author: scivision

.github/workflows/ci.yml

@@ -16,11 +16,17 @@ on:
       - "**.cmake"
       - "**/CMakeLists.txt"
       - ".github/workflows/ci.yml"
+  workflow_dispatch:
+
+# avoid wasted runs
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
 
 jobs:
 
   linux-gcc:
-    runs-on: ubuntu-24.04
+    runs-on: ubuntu-latest
     timeout-minutes: 15
 
     strategy:
@@ -133,12 +139,13 @@ jobs:
 
     steps:
     - uses: msys2/setup-msys2@v2
+      id: msys2
       with:
         update: true
-        install: mingw-w64-x86_64-gcc-fortran
+        install: mingw-w64-ucrt-x86_64-gcc-fortran
 
     - 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/checkout@v4
 

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.25...3.30)
+cmake_minimum_required(VERSION 3.25...4.0)
 # 3.19 for CheckSourceCompiles
 # 3.25 for block()