@@ -192,3 +192,59 @@ jobs:
192192 # fail if warnings in local build
193193 ! grep -q ": *[Ww]arning:" build.log || exit 1
194194 cabal v2-test --disable-optimization
195+
196+ linux/benchmark:
197+
198+ runs-on: ubuntu-18.04
199+ strategy:
200+ fail-fast: true
201+ matrix:
202+ versions:
203+ - ghc: '8.8.4'
204+ cabal: '3.2'
205+ - ghc: '8.10.2'
206+ cabal: '3.2'
207+ steps:
208+ - uses: actions/checkout@v2
209+
210+ # need to install older cabal/ghc versions from ppa repository
211+
212+ - name: Install recent cabal/ghc
213+ uses: haskell/actions/setup@v1
214+ with:
215+ ghc-version: ${{ matrix.versions.ghc }}
216+ cabal-version: ${{ matrix.versions.cabal }}
217+
218+ # declare/restore cached things
219+ # caching doesn't work for scheduled runs yet
220+ # https://github.com/actions/cache/issues/63
221+
222+ - name: Cache cabal global package db
223+ id: cabal-global
224+ uses: actions/cache@v2
225+ with:
226+ path: |
227+ ~/.cabal
228+ key: ${{ runner.os }}-${{ matrix.versions.ghc }}-${{ matrix.versions.cabal }}-cabal-global-${{ hashFiles('cabal.project') }}
229+
230+ - name: Cache cabal work
231+ id: cabal-local
232+ uses: actions/cache@v2
233+ with:
234+ path: |
235+ dist-newstyle
236+ key: ${{ runner.os }}-${{ matrix.versions.ghc }}-${{ matrix.versions.cabal }}-cabal-local
237+
238+ - name: Install dependencies
239+ run: |
240+ v2=$([ "${{ matrix.versions.cabal }}" = "2.2" ] && printf 'new' || printf 'v2')
241+ cabal $v2-update
242+ cabal $v2-build --dependencies-only --enable-optimization=1 --enable-benchmarks
243+
244+ - name: Build and test
245+ run: |
246+ v2=$([ "${{ matrix.versions.cabal }}" = "2.2" ] && printf 'new' || printf 'v2')
247+ cabal $v2-build --enable-optimization=1 --enable-benchmarks 2>&1 | tee build.log
248+ # fail if warnings in local build
249+ ! grep -q ": *[Ww]arning:" build.log || exit 1
250+ cabal $v2-bench --enable-optimization=1