Ci fixes (#783)

* Drop macOS benchmarks

* Drop macOS tests

* Really exclude Windows 8.6.4

It occasionally becomes much slower than the others and times out after 6h

https://github.com/haskell/haskell-language-server/runs/1626173853?check_suite_focus=true

* switch to haskell/actions/setup

actions/setup-haskell has been archived, haskell/actions/setup is the replacement

* use coarser cache keys

We are getting very few cache hits because we have too many caches and are
running over the 5GB per repository limit.

Each node in the matrix weighs around 350MB, so we can have up to 15 nodes. The
current matrix (after dropping macOS but before adding 8.10.3) has 12 nodes.

The `**/*.cabal` hash is wrong, since it also captures cabal files in tests
The `**/cabal.project` is wrong for the same reason, but it can be easily
fixed.

* Use more precise .cabal paths in test cache

* Reuse build cache in bench workflows and viceversa

* Reduce Nix builds to the bare minimum

We simply need to check that the Nix derivation works

* remove enable-stack

* Auto cancel redundant workflows

* Enable tests fail-fast

* Remove ghc-lib from matrix

Created #784 to restore it

.github/workflows/bench.yml

@@ -9,12 +9,12 @@ jobs:
       fail-fast: false
       matrix:
         ghc: ['8.10.2', '8.8.4', '8.6.5']
-        os: [ubuntu-latest, macOS-latest]
+        os: [ubuntu-latest]
 
     steps:
     - uses: actions/checkout@v2
     - run: git fetch origin master # check the master branch for benchmarking
-    - uses: actions/setup-haskell@v1
+    - uses: haskell/actions/setup@v1
       with:
         ghc-version: ${{ matrix.ghc }}
         cabal-version: '3.2'
@@ -26,7 +26,11 @@ jobs:
         path: |
           ~/.cabal/packages
           ~/.cabal/store
-        key: ${{ runner.os }}-${{ matrix.ghc }}-cabal-bench
+        key: ${{ runner.os }}-${{ matrix.ghc }}-bench-${{ hashFiles('cabal.project') }}
+        restore-keys: |
+            ${{ runner.os }}-${{ matrix.ghc }}-build-${{ hashFiles('cabal.project') }}
+            ${{ runner.os }}-${{ matrix.ghc }}-bench-
+            ${{ runner.os }}-${{ matrix.ghc }}
 
     - run: cabal update
 

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: true
-    - uses: actions/setup-haskell@v1
+    - uses: haskell/actions/setup@v1
       with:
         ghc-version: ${{ matrix.ghc }}
         cabal-version: '3.2'
@@ -174,4 +174,3 @@ jobs:
           asset_path: bin/haskell-language-server.tar.gz
           asset_name: haskell-language-server-${{ matrix.os }}-${{ github.event.release.tag_name }}.tar.gz
           asset_content_type: application/gzip
-

.github/workflows/nix.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ['default', 'ghc8102', 'ghc884', 'ghc865']
+        ghc: ['default']
         os: [ubuntu-latest, macOS-latest]
 
     steps:

.github/workflows/test.yml

@@ -5,11 +5,10 @@ jobs:
   test:
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         ghc: ["8.10.2", "8.10.1", "8.8.4", "8.8.3", "8.8.2", "8.6.5", "8.6.4"]
-        os: [ubuntu-latest, macOS-latest, windows-latest]
-        ghc-lib: [false]
+        os: [ubuntu-latest, windows-latest]
         exclude:
           - os: windows-latest
             ghc: "8.10.2" # broken due to https://gitlab.haskell.org/ghc/ghc/-/issues/18550
@@ -19,25 +18,23 @@ jobs:
             ghc: "8.8.3" # fails due to segfault
           - os: windows-latest
             ghc: "8.8.2" # fails due to error with Cabal
-        include:
           - os: windows-latest
             ghc: "8.6.4" # times out after 300m
+        include:
           - os: windows-latest
             ghc: "8.10.2.2" # only available for windows and choco
-          # one ghc-lib build
-          - os: ubuntu-latest
-            ghc: '8.10.1'
-            ghc-lib: true
 
     steps:
+      # Cancel queued workflows from earlier commits in this branch
+      - uses: fkirc/skip-duplicate-actions@master
+
       - uses: actions/checkout@v2
         with:
           submodules: true
-      - uses: actions/setup-haskell@v1
+      - uses: haskell/actions/setup@v1
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: "3.2"
-          enable-stack: true
 
       - run: ./fmt.sh
         name: "HLint via ./fmt.sh"
@@ -47,10 +44,12 @@ jobs:
         env:
           cache-name: cache-cabal
         with:
-          path: ~/.cabal/
-          key: ${{ runner.os }}-${{ matrix.ghc }}-build-${{ env.cache-name }}-${{ hashFiles('**/*.cabal') }}-${{ hashFiles('**/cabal.project') }}
+          path: |
+            ~/.cabal/packages
+            ~/.cabal/store
+          key: ${{ runner.os }}-${{ matrix.ghc }}-build-${{ hashFiles('cabal.project') }}
           restore-keys: |
-            ${{ runner.os }}-${{ matrix.ghc }}-build-${{ env.cache-name }}-
+            ${{ runner.os }}-${{ matrix.ghc }}-bench-$${ hashFiles('cabal.project') }}
             ${{ runner.os }}-${{ matrix.ghc }}-build-
             ${{ runner.os }}-${{ matrix.ghc }}
 
@@ -72,13 +71,11 @@ jobs:
         run: cabal build || cabal build || cabal build
 
       - name: Test ghcide
-        if: ${{ !matrix.ghc-lib }}
         shell: bash
         # run the tests without parallelism to avoid running out of memory
         run: cabal test ghcide --test-options="-j1 --rerun-update" || cabal test ghcide --test-options="-j1 --rerun" || LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test ghcide --test-options="-j1 --rerun"
 
       - name: Test func-test suite
-        if: ${{ !matrix.ghc-lib }}
         shell: bash
         env:
           HLS_TEST_EXE: hls
@@ -89,7 +86,6 @@ jobs:
         run: cabal test func-test --test-options="-j1 --rerun-update" || cabal test func-test --test-options="-j1 --rerun --rerun-update" || cabal test func-test --test-options="-j1 --rerun" || LSP_TEST_LOG_COLOR=0 LSP_TEST_LOG_MESSAGES=true LSP_TEST_LOG_STDERR=true cabal test func-test --test-options="-j1 --rerun"
 
       - name: Test wrapper-test suite
-        if: ${{ !matrix.ghc-lib }}
         shell: bash
         env:
           HLS_TEST_EXE: hls