Cleanup Github Actions and fix fprettify

.fprettify.ini

@@ -9,3 +9,8 @@ whitespace = 2
 enable-decl = true
 enable-replacements = true
 c-relations = true
+
+# Hack to stop fprettify formatting CUDA-style chevrons from <<< to < < <
+# We just ignore all files calling kernels:
+# TODO delete me when relevant PR for fprettify is merged: https://github.com/pseewald/fprettify/pull/162
+exclude = ["exec_dist.f90"]

.github/workflows/build_and_test.yml

@@ -1,7 +1,10 @@
 name: Run unit tests
 
 on:
-  push:
+  pull_request:
+    paths:
+      - 'src/**'
+      - 'tests/**'
 
 jobs:
   unit-tests:
@@ -10,15 +13,15 @@ jobs:
       OMPI_VERSION: 4.1.5
     steps:
 
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     # We don't want to build openmpi each time this workflow is
     # run. Setup caching of OpenMPI after it is built and installed.
     # See "Caching dependencies to speed up workflows" on the GH
     # actions docs.
     - name: Cache OpenMPI
       id: cache-openmpi
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: openmpi-${{ env.OMPI_VERSION }}/installed
         key: openmpi-${{ env.OMPI_VERSION }}

.github/workflows/check_policies.yml

@@ -1,24 +1,17 @@
 name: check-policies
-on: [push]
+
+on: [pull_request]
+
 jobs:
-  check-commit-messages:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          # Checkout with full history, not just latest revision.
-          fetch-depth: 0
-      - uses: actions/setup-python@v4
-      - run: |
-          bash .github/workflows/check_commit_messages.sh \
-            ${{ github.event.before }} ${{ github.event.after }}
   check-formatting:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/setup-python@v4
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
       - run: pip install fprettify
       - run: fprettify --config .fprettify.ini --diff --recursive src
-      - run: test -z "$($FPRETTIFY_COMMAND)"
+      - run: if [[ ! -z "$($FPRETTIFY_COMMAND)" ]]; then echo "::warning::Code formatting issues detected. See log for details."; fi
         env:
           FPRETTIFY_COMMAND: fprettify --config .fprettify.ini --diff --recursive src