feat(third_party/bazel): Check in rules_haskell from Tweag

third_party/bazel/rules_haskell/.circleci/config.yml

@@ -0,0 +1,188 @@
+version: 2
+
+# NOTE:
+#   Disk cache:
+#       We don't want to keep old artifacts around so we always build from
+#       scratch on master builds and upload the new cache afterwards. Because
+#       Circle doesn't allow skipping a "restore_cache" we create a dummy
+#       "empty" cache that's only ever pulled on master. Alternatively we could
+#       ask Bazel to clean up old items (LRU style) but the documentation is
+#       very terse and I could not figure how to do it:
+#           https://docs.bazel.build/versions/master/remote-caching.html
+#       It also appears that there's ongoing work but the feature is not ready:
+#           https://github.com/bazelbuild/bazel/issues/5139
+#
+#       Currently the disk cache is only implemented for the Darwin builds,
+#       which were the slowest ones. There is no reason why a disk cache
+#       couldn't be used for the other jobs: I just haven't gotten around to
+#       doing it.
+
+jobs:
+  build-linux-ghc-bindist:
+    docker:
+      - image: debian
+    working_directory: ~/rules_haskell
+    resource_class: large
+    steps:
+      - checkout
+      - run:
+          name: Setup test environment
+          command: |
+            apt-get update
+            apt-get install -y wget gnupg golang make libgmp3-dev libtinfo-dev pkg-config zip g++ zlib1g-dev unzip python bash-completion locales
+            echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen
+            locale-gen
+            wget "https://github.com/bazelbuild/bazel/releases/download/0.24.0/bazel_0.24.0-linux-x86_64.deb"
+            dpkg -i bazel_0.24.0-linux-x86_64.deb
+            echo "common:ci --build_tag_filters -requires_hackage,-requires_zlib,-requires_doctest,-requires_c2hs,-requires_threaded_rts,-dont_test_with_bindist" > .bazelrc.local
+      - run:
+          name: Build tests
+          command: |
+            bazel build --config ci //tests/...
+      - run:
+          name: Run tests
+          command: |
+            # Run the start script test.
+            # Doesn't use the test suite binary, because that depends on nixpkgs dependencies.
+            ./tests/run-start-script.sh
+            # TODO: enable all tests for bindists
+            # (this will require tests to both work with nixpkgs and hazel backends)
+
+  # ATTN: when you change anything here, don’t forget to copy it to the build-darwin section
+  build-linux-nixpkgs:
+    docker:
+      - image: nixos/nix:2.1.3
+    working_directory: ~/rules_haskell
+    resource_class: large
+    steps:
+      - checkout
+      - run:
+          name: System dependencies
+          command: |
+            set -e
+            apk --no-progress update
+            apk --no-progress add bash ca-certificates
+
+            mkdir -p /etc/nix
+            # CircleCI and Nix sandboxing don't play nice. See
+            # https://discourse.nixos.org/t/nixos-on-ovh-kimsufi-cloning-builder-process-operation-not-permitted/1494/5
+            echo "sandbox = false" > /etc/nix/nix.conf
+            # No builders and no local jobs ensures that everything has to come from a binary cache
+            # If we want to add packages that are not cached by the offical NixOS binary cache,
+            # we need to manually build them (e.g. `nix-build -A <dependency> --max-jobs <no-cpu-cores>`).
+            # This is a sanity check.
+            echo "builders =" >> /etc/nix/nix.conf
+            echo "max-jobs = 0" >> /etc/nix/nix.conf
+      - run:
+          name: Configure
+          command: |
+            echo "build:ci --host_platform=@io_tweag_rules_haskell//haskell/platforms:linux_x86_64_nixpkgs" > .bazelrc.local
+      - run:
+          name: Build tests
+          command: |
+            nix-shell --arg docTools false --pure --run \
+              'bazel build --config ci //tests/...'
+      - run:
+          name: Run tests
+          # bazel does not support recursive bazel call, so we
+          # cannot use bazel run here because the test runner uses
+          # bazel
+          command: |
+            nix-shell --arg docTools false --pure --run \
+              'bazel build --config ci //tests:run-tests'
+            # TODO(Profpatsch) re-add a nixpkgs startup script
+            # and enable this test again
+            nix-shell --arg docTools false --pure --run \
+              './bazel-ci-bin/tests/run-tests --skip "/startup script/"'
+            nix-shell --arg docTools false --pure --run \
+              'bazel coverage //tests/... --config ci --build_tag_filters "coverage-compatible" --test_tag_filters "coverage-compatible" --test_output=all'
+
+  build-darwin:
+    macos:
+      xcode: "9.0"
+    steps:
+      - checkout
+      - run:
+          name: Install Nix
+          command: |
+            curl https://nixos.org/nix/install | sh
+
+      - run:
+          name: Install cachix
+          shell: /bin/bash -eilo pipefail
+          command: |
+            nix-env -iA cachix -f https://github.com/NixOS/nixpkgs/tarball/db557aab7b690f5e0e3348459f2e4dc8fd0d9298
+
+      - run:
+          name: Run cachix
+          shell: /bin/bash -eilo pipefail
+          command: |
+            cachix use tweag
+            cachix push tweag --watch-store
+          background: true
+
+      - run:
+          name: Configure
+          command: |
+            mkdir -p ~/.cache/bazel/
+
+            echo "build:ci --host_platform=@io_tweag_rules_haskell//haskell/platforms:darwin_x86_64_nixpkgs" >> .bazelrc.local
+            echo "build:ci --disk_cache=~/.cache/bazel/" >> .bazelrc.local
+            echo "common:ci --test_tag_filters -dont_test_on_darwin" >> .bazelrc.local
+
+      - restore_cache:
+          keys: # see note about 'Disk cache'
+              - v1-rules_haskell-empty-{{ .Branch }}-
+              - v1-rules_haskell-cache-{{ .Branch }}-
+              - v1-rules_haskell-cache-master-
+
+      - run:
+          name: Build tests
+          shell: /bin/bash -eilo pipefail
+          command: |
+            nix-shell --arg docTools false --pure --run \
+              'bazel build --config ci //tests/...'
+      - run:
+          name: Run tests
+          shell: /bin/bash -eilo pipefail
+          command: |
+
+            # Keep CI awake
+            while true; do echo "."; sleep 60; done &
+
+            nix-shell --arg docTools false --pure --run \
+              'bazel build --config ci //tests:run-tests'
+            # XXX 2019-01-22 Disable start script checking on Darwin
+            # due to a clash between binutils and clang.
+            nix-shell --arg docTools false --pure --run \
+              './bazel-ci-bin/tests/run-tests --skip "/startup script/"'
+            nix-shell --arg docTools false --pure --run \
+              'bazel coverage //tests/... --config ci --build_tag_filters "coverage-compatible" --test_tag_filters "coverage-compatible" --test_output=all'
+
+
+        # see note about 'Disk cache'
+      - save_cache:
+          key: v1-rules_haskell-cache-{{ .Branch }}-{{ .BuildNum }}
+          paths:
+              - ~/.cache/bazel/
+
+      - run:
+          name: Clean up cache
+          shell: /bin/bash -eilo pipefail
+          command: |
+            rm -rf ~/.cache/bazel/
+            mkdir -p ~/.cache/bazel/
+
+      - save_cache:
+          key: v1-rules_haskell-empty-master-{{ .BuildNum }}
+          paths:
+              - ~/.cache/bazel/
+
+workflows:
+  version: 2
+  build:
+    jobs:
+      - build-linux-ghc-bindist
+      - build-linux-nixpkgs
+      - build-darwin:
+          context: org-global # for the cachix token