;ci: push: skip most steps if commit message begins with ;

.github/workflows/push.yml

@@ -80,6 +80,11 @@ jobs:
           && bin/commitlint  $RANGE \
           || ( echo "could not identify commits, checking last $NUM instead:"; bin/commitlint -$NUM )
 
+    - name: Skip remaining CI steps if last commit message begins with ; ?
+      run: |
+        git log -1 --pretty='%s' ${GITHUB_HEAD_REF:+origin/$GITHUB_HEAD_REF} \
+        | grep -qE '^ *;' || echo “::set-env name=CONTINUE::true”
+
     # things to be cached/restored:
 
     - name: Cache stack global package db
@@ -90,6 +95,7 @@ jobs:
         key: ${{ runner.os }}-stack-global-${{ matrix.plan.ghc }}-${{ hashFiles('**.yaml') }}
         restore-keys: |
              ${{ runner.os }}-stack-global-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     - name: Cache stack-installed programs in ~/.local/bin
       id:   stack-programs
@@ -99,6 +105,7 @@ jobs:
         key: ${{ runner.os }}-stack-programs-${{ matrix.plan.ghc }}-${{ hashFiles('**.yaml') }}
         restore-keys: |
              ${{ runner.os }}-stack-programs-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     - name: Cache .stack-work
       uses: actions/cache@v2
@@ -107,6 +114,7 @@ jobs:
         key: ${{ runner.os }}-stack-work-${{ matrix.plan.ghc }}-${{ hashFiles('**.yaml') }}
         restore-keys: |
              ${{ runner.os }}-stack-work-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     - name: Cache hledger-lib/.stack-work
       uses: actions/cache@v2
@@ -115,6 +123,7 @@ jobs:
         key: ${{ runner.os }}-hledger-lib-stack-work-${{ matrix.plan.ghc }}-${{ hashFiles('hledger-lib/package.yaml') }}
         restore-keys: |
              ${{ runner.os }}-hledger-lib-stack-work-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     - name: Cache hledger/.stack-work
       uses: actions/cache@v2
@@ -123,6 +132,7 @@ jobs:
         key: ${{ runner.os }}-hledger-stack-work-${{ matrix.plan.ghc }}-${{ hashFiles('hledger/package.yaml') }}
         restore-keys: |
              ${{ runner.os }}-hledger-stack-work-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     - name: Cache hledger-ui/.stack-work
       uses: actions/cache@v2
@@ -131,6 +141,7 @@ jobs:
         key: ${{ runner.os }}-hledger-ui-stack-work-${{ matrix.plan.ghc }}-${{ hashFiles('hledger-ui/package.yaml') }}
         restore-keys: |
              ${{ runner.os }}-hledger-ui-stack-work-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     - name: Cache hledger-web/.stack-work
       uses: actions/cache@v2
@@ -139,6 +150,7 @@ jobs:
         key: ${{ runner.os }}-hledger-web-stack-work-${{ matrix.plan.ghc }}-${{ hashFiles('hledger-web/package.yaml') }}
         restore-keys: |
              ${{ runner.os }}-hledger-web-stack-work-${{ matrix.plan.ghc }}
+      if: env.CONTINUE
 
     # actions:
 
@@ -149,18 +161,21 @@ jobs:
         # curl -sL https://get.haskellstack.org/stable/linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'; chmod a+x ~/.local/bin/stack
         if [[ ! -x ~/.local/bin/stack ]]; then curl -sL https://get.haskellstack.org/stable/linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C ~/.local/bin '*/stack'; chmod a+x ~/.local/bin/stack; fi
         stack --version
+      if: env.CONTINUE
 
     - name: Install GHC
       env:
         stack: ${{ matrix.plan.stack }}
       run: |
         $stack setup --install-ghc
+      if: env.CONTINUE
 
     - name: Install haskell deps
       env:
         stack: ${{ matrix.plan.stack }}
       run: |
         $stack build --only-dependencies
+      if: env.CONTINUE
 
     - name: Build hledger fast
       env:
@@ -169,6 +184,7 @@ jobs:
         $stack build --fast --ghc-options=-Werror --force-dirty
         # --ghc-options=-fforce-recomp   # needed occasionally to clear out stale compiled modules
         #  --pedantic
+      if: env.CONTINUE
 
     - name: Install shelltestrunner
       env:
@@ -177,6 +193,7 @@ jobs:
         export PATH=~/.local/bin:$PATH
         if [[ ! -x ~/.local/bin/shelltest ]]; then $stack install shelltestrunner-1.9; fi
         shelltest --version
+      if: env.CONTINUE
 
     - name: Test functional tests (excluding addons)
       env:
@@ -185,3 +202,4 @@ jobs:
         export PATH=~/.local/bin:$PATH
         COLUMNS=80 $stack exec -- shelltest --execdir -j16 hledger/test -x /_ -x /addons  #  bin
         # XXX func tests in bin are run only with GHC 8.2 for now
+      if: env.CONTINUE