diff --git a/.ci/build_docs.sh b/.ci/build_docs.sh
new file mode 100755
index 0000000..55b48c5
--- /dev/null
+++ b/.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}
diff --git a/.ci/cabal.project.local b/.ci/cabal.project.local
new file mode 100644
index 0000000..abb26d7
--- /dev/null
+++ b/.ci/cabal.project.local
@@ -0,0 +1,2 @@
+package clash-cores
+  ghc-options: -Werror
diff --git a/.ci/test_cabal.sh b/.ci/test_cabal.sh
new file mode 100755
index 0000000..6ca70f6
--- /dev/null
+++ b/.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
diff --git a/.ci/test_whitespace.sh b/.ci/test_whitespace.sh
new file mode 100755
index 0000000..fb4ea88
--- /dev/null
+++ b/.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
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..3e6b9a4
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,143 @@
+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:
+  setup-nix:
+    name: Setup Nix
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        uses: cachix/install-nix-action@22
+        with:
+          nix-path: nixpkgs=channel:nixos-unstable
+
+      - name: Cache nix
+        uses: DeterminateSystems/magic-nix-cache-action@v2
+
+      - name: Build the nix environment
+        run: nix-build
+
+  cabal:
+    name: Cabal tests - ghc ${{ matrix.ghc }} / clash ${{ matrix.clash }}
+    runs-on: ${{ matrix.os }}
+    needs: setup-nix
+    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: 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: Setup CI
+        run: |
+          nix-shell --run cabal v2-freeze
+          mv cabal.project.freeze frozen
+
+      - name: Cache dependencies
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
+          key: ${{ runner.os }}-ghc-${{ matrix.ghc }}-${{ matrix.clash }}-${{ hashFiles('frozen') }}
+          restore-keys: |
+            ${{ runner.os }}-ghc-${{ matrix.ghc }}-${{ matrix.clash }}-${{ hashFiles('frozen') }}
+            ${{ runner.os }}-ghc-${{ matrix.ghc }}-${{ matrix.clash }}-
+            ${{ runner.os }}-ghc-${{ matrix.ghc }}-
+
+      - name: Unit Tests
+        run: |
+          nix-shell --run .ci/test_cabal.sh
+
+      - name: Testsuite (VHDL)
+        run: |
+          nix-shell --run cabal v2-run clash-testsuite -- --hide-successes -p .VHDL --no-vivado
+
+      - name: Testsuite (Verilog)
+        run: |
+          nix-shell --run cabal v2-run clash-testsuite -- --hide-successes -p .Verilog --no-vivado
+
+      - name: Testsuite (SystemVerilog)
+        run: |
+          nix-shell --run cabal v2-run clash-testsuite -- --hide-successes -p .SystemVerilog --no-modelsim --no-vivado
+
+  documentation:
+    name: Haddock Documentation - ghc ${{ matrix.ghc }} / clash ${{ matrix.clash }}
+    needs: setup-nix
+    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: 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: |
+          nix-shell --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
+
diff --git a/.gitignore b/.gitignore
index 7579cca..f4db831 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,6 +5,7 @@ dist-newstyle/
 stack.yaml.lock
 cabal-dev
 /cabal.project.local
+haddock_log
 .ghc.environment.*
 *.o
 *.o-boot