ci: Build against oldstable fdsdk too

Author: bbhtt

.github/workflows/ci.yml

@@ -43,7 +43,7 @@ jobs:
             exit 1
           fi
 
-      - name: Build changed manifests
+      - name: Build changed manifests against stable Freedesktop SDK
         if: github.event_name == 'pull_request'
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -62,17 +62,52 @@ jobs:
                 | sort -V \
                 | tail -n1)
 
-              cat > org.example.test.yml <<EOF
-          id: org.example.test
+              cat > org.example.stable.yml <<EOF
+          id: org.example.stable
           runtime: org.freedesktop.Platform
           runtime-version: '$RUNTIME_VERSION'
           sdk: org.freedesktop.Sdk
           modules:
             - $f
           EOF
 
-              cat org.example.test.yml
+              cat org.example.stable.yml
               dbus-run-session flatpak run org.flatpak.Builder --verbose --user --force-clean \
-                --install-deps-from=flathub builddir org.example.test.yml
+                --install-deps-from=flathub builddir org.example.stable.yml
             fi
           done
+
+      - name: Build changed manifests against oldstable Freedesktop SDK
+        if: github.event_name == 'pull_request'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GH_REPO: ${{ github.repository }}
+        run: |
+          set -e
+          FILES=$(gh pr view "${{ github.event.number }}" --json files --jq '.files[].path')
+
+          for f in $FILES; do
+            if [[ "$f" == *.json && -f "$f" ]]; then
+              echo "Building manifest for $f"
+
+              RUNTIME_VERSION=$(flatpak remote-ls --columns=ref flathub \
+                | grep "runtime/org.freedesktop.Platform/x86_64/" \
+                | sed 's|.*/||' \
+                | sort -V \
+                | tail -n2|head -1)
+
+              cat > org.example.oldstable.yml <<EOF
+          id: org.example.oldstable
+          runtime: org.freedesktop.Platform
+          runtime-version: '$RUNTIME_VERSION'
+          sdk: org.freedesktop.Sdk
+          modules:
+            - $f
+          EOF
+
+              cat org.example.oldstable.yml
+              dbus-run-session flatpak run org.flatpak.Builder --verbose --user --force-clean \
+                --install-deps-from=flathub builddir org.example.oldstable.yml
+            fi
+          done
+

README.md

@@ -69,10 +69,11 @@ for your sources and they will be checked for updates in a weekly basis.
 
 - The module manifest must be in JSON format.
 
+- The manifest must be buildable with the latest stable
+  and oldstable versions of the Freedesktop SDK runtime.
+
 ### Inclusion process
 
 Please open a [pull request](https://github.com/flathub/shared-modules/pulls)
 with the module manifest and add yourself as a [codeowner](https://github.com/flathub/shared-modules/blob/master/CODEOWNERS)
 of that module.
-
-The manifest must be buildable with the latest Freedesktop SDK runtime.