Add initial CI setup

.ci/build_docs.sh

@@ -0,0 +1,44 @@
+#!/bin/bash
+set -xueo pipefail
+
+mkdir -p hadocs
+
+# Cache dependencies
+cabal v2-build clash-cores -O0 --enable-documentation --only-dependencies
+
+cabal v2-haddock clash-cores -O0 --enable-documentation \
+  |  tee haddock_log
+
+set +e
+
+# Temporarily disabled, as there are hundreds of TH-generated instances without
+# documentation.
+#if grep -q "Missing documentation" haddock_log; then
+#  echo -e "\e[1m\e[31mMissing documentation! Scroll up for full log.\e[0m"
+#  grep --color=always -n -C 5 "Missing documentation" haddock_log
+#  exit 1
+#fi
+
+out_of_scope_warn="If you qualify the identifier, haddock can try to link it anyway"
+if grep -q "${out_of_scope_warn}" haddock_log; then
+  echo -e "\e[1m\e[31mIdentifier out of scope in ${pkg}! Scroll up for full log.\e[0m"
+  grep --color=always -n -C 5 "${out_of_scope_warn}" haddock_log
+  exit 1
+fi
+
+link_dest_warn="could not find link destinations for:"
+if grep -q "${link_dest_warn}" haddock_log; then
+  echo -e "\e[1m\e[31mCould not find link destination in ${pkg}! Scroll up for full log.\e[0m"
+  grep --color=always -n -C 5 "${link_dest_warn}" haddock_log
+  exit 1
+fi
+
+ambiguous_warn="You may be able to disambiguate the identifier by"
+if grep -q "${ambiguous_warn}" haddock_log; then
+  echo -e "\e[1m\e[31mAmbiguous identifier found in ${pkg}! Scroll up for full log.\e[0m"
+  grep --color=always -n -C 5 "${ambiguous_warn}" haddock_log
+  exit 1
+fi
+
+# Copy documention to hadocs/
+ln -s "$(dirname "$(tail -n1 haddock_log)")" hadocs/${pkg}

.ci/cabal.project.local

@@ -0,0 +1,2 @@
+package clash-cores
+  ghc-options: -Werror

.ci/test_cabal.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+set -xeou pipefail
+
+cabal v2-build all -fci
+cabal v2-run unittests -fci --enable-tests
+cabal v2-run doctests -fci --enable-tests
+cabal v2-sdist

.ci/test_whitespace.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+set -xou pipefail
+
+grep \
+  -E ' $' -n -r . \
+  --include=*.{hs,hs-boot,sh,cabal,md,yml} \
+  --exclude-dir=dist-newstyle --exclude-dir=deps
+if [[ $? == 0 ]]; then
+    echo "EOL whitespace detected. See ^"
+    exit 1;
+fi

.github/workflows/ci.yml

@@ -0,0 +1,137 @@
+name: CI
+
+# Trigger the workflow on all pull requests and pushes/merges to main branch
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  cabal:
+    name: Cabal tests - ghc ${{ matrix.ghc }} / clash ${{ matrix.clash }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        clash:
+          - "1.8.1"
+        cabal:
+          - "3.10"
+        ghc:
+          - "9.6.4"
+
+    env:
+      clash_version: ${{ matrix.clash }}
+      NIXPKGS_ALLOW_BROKEN: 1
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v22
+        with:
+          nix-path: nixpkgs=channel:nixos-unstable
+
+      - name: Cache nix
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Run nix garbage collector
+        run: nix-store --gc
+
+      - name: Enter the nix environment
+        run: nix-shell
+
+      - name: Setup Haskell
+        uses: haskell-actions/setup@v2
+        id: setup-haskell-cabal
+        with:
+          ghc-version: ${{ matrix.ghc }}
+          cabal-version: ${{ matrix.cabal }}
+
+      - name: Use CI specific settings
+        run: |
+          cp .ci/cabal.project.local .
+
+      - name: Unit Tests
+        run: |
+          .ci/test_cabal.sh
+
+      - name: Testsuite (VHDL)
+        run: |
+          cabal v2-run cores-testsuite -- --hide-successes -p .VHDL --no-vivado
+
+      - name: Testsuite (Verilog)
+        run: |
+          cabal v2-run cores-testsuite -- --hide-successes -p .Verilog --no-vivado
+
+      - name: Testsuite (SystemVerilog)
+        run: |
+          cabal v2-run cores-testsuite -- --hide-successes -p .SystemVerilog --no-modelsim --no-vivado
+
+  documentation:
+    name: Haddock Documentation - ghc ${{ matrix.ghc }} / clash ${{ matrix.clash }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        clash:
+          - "1.8.1"
+        cabal:
+          - "3.10"
+        ghc:
+          - "9.6.4"
+
+    env:
+      clash_version: ${{ matrix.clash }}
+      NIXPKGS_ALLOW_BROKEN: 1
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@v22
+        with:
+          nix-path: nixpkgs=channel:nixos-unstable
+
+      - name: Cache nix
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Run nix garbage collector
+        run: nix-store --gc
+
+      - name: Enter the nix environment
+        run: nix-shell
+
+      - name: Setup Haskell
+        uses: haskell-actions/setup@v2
+        id: setup-haskell-cabal
+        with:
+          ghc-version: ${{ matrix.ghc }}
+          cabal-version: ${{ matrix.cabal }}
+
+      - name: Use CI specific settings
+        run: |
+          cp .ci/cabal.project.local .
+
+      - name: Build
+        run: |
+          .ci/build_docs.sh
+  linting:
+    name: Source code linting
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Whitespace
+        run: |
+          .ci/test_whitespace.sh
+

.gitignore

@@ -5,6 +5,7 @@ dist-newstyle/
 stack.yaml.lock
 cabal-dev
 /cabal.project.local
+haddock_log
 .ghc.environment.*
 *.o
 *.o-boot

default.nix

@@ -3,4 +3,10 @@
 with nixpkgs.pkgs;
 with gitignore;
 
-haskellPackages.callCabal2nix "clash-cores" (gitignoreSource ./.) {}
+let
+  clash-cores = haskellPackages.callCabal2nix "clash-cores" (gitignoreSource ./.) {};
+in
+  clash-cores.overrideAttrs (final: prev: {
+    buildInputs = prev.buildInputs ++ [ pkgs.git ];
+  })
+