Merge branch 'js/ci-make-sparse'

The CI gained a new job to run "make sparse" check.

* js/ci-make-sparse:
  ci/install-dependencies: handle "sparse" job package installs
  ci: run "apt-get update" before "apt-get install"
  ci: run `make sparse` as part of the GitHub workflow

Author: gitster

.github/workflows/main.yml

@@ -285,6 +285,26 @@ jobs:
     - uses: actions/checkout@v2
     - run: ci/install-dependencies.sh
     - run: ci/run-static-analysis.sh
+  sparse:
+    needs: ci-config
+    if: needs.ci-config.outputs.enabled == 'yes'
+    env:
+      jobname: sparse
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Download a current `sparse` package
+      # Ubuntu's `sparse` version is too old for us
+      uses: git-for-windows/get-azure-pipelines-artifact@v0
+      with:
+        repository: git/git
+        definitionId: 10
+        artifact: sparse-20.04
+    - name: Install the current `sparse` package
+      run: sudo dpkg -i sparse-20.04/sparse_*.deb
+    - uses: actions/checkout@v2
+    - name: Install other dependencies
+      run: ci/install-dependencies.sh
+    - run: make sparse
   documentation:
     needs: ci-config
     if: needs.ci-config.outputs.enabled == 'yes'

ci/install-dependencies.sh

@@ -65,6 +65,11 @@ StaticAnalysis)
 	sudo apt-get -q -y install coccinelle libcurl4-openssl-dev libssl-dev \
 		libexpat-dev gettext make
 	;;
+sparse)
+	sudo apt-get -q update -q
+	sudo apt-get -q -y install libssl-dev libcurl4-openssl-dev \
+		libexpat-dev gettext zlib1g-dev
+	;;
 Documentation)
 	sudo apt-get -q update
 	sudo apt-get -q -y install asciidoc xmlto docbook-xsl-ns make