ci: use path whitelists instead of blacklists

That is, replace `paths-ignore` with `paths`.

This should reduce the number of unnecessary workflow executions and the
frequency at which paths are changed.  It also reduces the overall
number of paths used.

Also, add the missing ci/printenv.sh to the path whitelists.

1 files changed, 35 insertions, 28 deletions

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 489ed4335..12df38762 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,42 +1,49 @@
 name: Build CI
 
+# Note: Keep this list in sync with DISTFILES in ../../Makefile.
 on:
   push:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/*'
-      - .git-blame-ignore-revs
-      - .github/dependabot.yml
-      - .github/pull_request_template.md
-      - .github/workflows/build-extra.yml
-      - .github/workflows/codeql-analysis.yml
-      - .github/workflows/codespell.yml
-      - .github/workflows/profile-checks.yml
-      - .gitignore
-      - .gitlab-ci.yml
-      - CONTRIBUTING.md
+    paths:
+      - 'contrib/**'
+      - 'etc/**'
+      - 'm4/**'
+      - 'platform/**'
+      - 'src/**'
+      - 'test/**'
+      - .github/workflows/build.yml
       - COPYING
+      - Makefile
       - README
-      - README.md
       - RELNOTES
-      - SECURITY.md
+      - ci/printenv.sh
+      - config.mk.in
+      - config.sh.in
+      - configure
+      - configure.ac
+      - install.sh
+      - mkdeb.sh
+      - mketc.sh
   pull_request:
-    paths-ignore:
-      - '.github/ISSUE_TEMPLATE/*'
-      - .git-blame-ignore-revs
-      - .github/dependabot.yml
-      - .github/pull_request_template.md
-      - .github/workflows/build-extra.yml
-      - .github/workflows/codeql-analysis.yml
-      - .github/workflows/codespell.yml
-      - .github/workflows/profile-checks.yml
-      - .gitignore
-      - .gitlab-ci.yml
-      - CONTRIBUTING.md
+    paths:
+      - 'contrib/**'
+      - 'etc/**'
+      - 'm4/**'
+      - 'platform/**'
+      - 'src/**'
+      - 'test/**'
+      - .github/workflows/build.yml
       - COPYING
+      - Makefile
       - README
-      - README.md
       - RELNOTES
-      - SECURITY.md
+      - ci/printenv.sh
+      - config.mk.in
+      - config.sh.in
+      - configure
+      - configure.ac
+      - install.sh
+      - mkdeb.sh
+      - mketc.sh
 
 permissions:  # added using https://github.com/step-security/secure-workflows
   contents: read