CI: skip tests on documentation changes

The Sage jobs are expensive thus they are not run when the example
projects are touched. They are also not run on branches other than
main and the release branches.

Signed-off-by: Filipe Laíns <lains@riseup.net>

.github/workflows/ci-sage.yml → .github/workflows/sage.yml

@@ -1,4 +1,4 @@
-name: Run Sage CI for Linux
+name: sage
 
 ## This GitHub Actions workflow provides:
 ##
@@ -35,14 +35,18 @@ name: Run Sage CI for Linux
 ## systems/configurations.
 
 on:
-  pull_request:
-    branches:
-      - main
-      - release-*
   push:
+  pull_request:
     branches:
       - main
       - release-*
+    paths-ignore:
+      # This is spelt like this to do not ignore the docs/examples/ folder.
+      - docs/*
+      - docs/usage/*
+      - CHANGELOG.rst
+      - LICENSE
+      - README.md
   workflow_dispatch:
     # Allow to run manually
 
@@ -52,10 +56,9 @@ concurrency:
 
 env:
   # Ubuntu packages to install so that the project's can build an sdist
-  DIST_PREREQ:      python3-pip
+  DIST_PREREQ: python3-pip
   # Name of this project in the Sage distribution
-  SPKG:             meson_python
-  ## REMOVE_PATCHES:   "*"
+  SPKG: meson_python
 
 jobs:
 

.github/workflows/tests.yml

@@ -6,6 +6,13 @@ on:
     branches:
       - main
       - release-*
+    paths-ignore:
+      # This is spelt like this to do not ignore the docs/examples/ folder.
+      - docs/*
+      - docs/usage/*
+      - CHANGELOG.rst
+      - LICENSE
+      - README.md
   workflow_dispatch:
     # Allow to run manually