ci-idris2-and-libs.yml

name: Idris2 and External Libs

on:
  push:
    branches:
      - '*'
    tags:
      - '*'
    paths-ignore:
      - 'docs/**'
      - 'icons/**'
      - 'Release/**'
      - '**.md'
      - 'CONTRIBUTORS'
      - 'LICENSE'
      - 'CHANGELOG.md'
      - '.github/workflows/ci-bootstrap.yml'
      - '.github/workflows/ci-lint.yml'
      - '.github/workflows/ci-sphinx.yml'
      - '.github/workflows/ci-super-linter.yml'
  pull_request:
    branches:
      - main
    paths-ignore:
      - 'docs/**'
      - 'icons/**'
      - 'Release/**'
      - '**.md'
      - 'CONTRIBUTORS'
      - 'LICENSE'
      - '.github/workflows/ci-bootstrap.yml'
      - '.github/workflows/ci-lint.yml'
      - '.github/workflows/ci-sphinx.yml'
      - '.github/workflows/ci-super-linter.yml'

concurrency:
  group: ${{ github.ref }}
  cancel-in-progress: true

env:
  # We aim to keep newest Idris commits buildable by as early of a
  # previous version as possible. In reality, we bump this regularly
  # to allow us to use new compiler/library features in the compiler
  # codebase, but an admirable longterm goal is to support building the
  # current version of the compiler with a previous version that is older
  # than its immediate predecessor.
  IDRIS2_MINIMUM_COMPAT_VERSION: 0.7.0

jobs:

  initialise:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Project
        uses: actions/checkout@v4
        with:
          # for pull_request so we can do HEAD^2
          fetch-depth: 2

      - name: Get commit message
        id: get_commit_message
        run: |
          if   [[ '${{ github.event_name }}' == 'push' ]]; then
            echo "commit_message=$(git log --format=%B -n 1 HEAD | tr '\n' ' ')" >> "$GITHUB_OUTPUT"
          elif [[ '${{ github.event_name }}' == 'pull_request' ]]; then
            echo "commit_message=$(git log --format=%B -n 1 HEAD^2 | tr '\n' ' ')" >> "$GITHUB_OUTPUT"
          fi

    outputs:
      commit_message:
        echo "${{ steps.get_commit_message.outputs.commit_message }}"

  ######################################################################
  # Build from the previous version
  # We perform this check before all the other ones because:
  # 1. It is fast
  # 2. If it fails then there is no point in trying the rest
  ######################################################################

  quick-check:
    needs: initialise
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci: skip]')
    env:
      IDRIS2_CG: chez
      SCHEME: scheme
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"

      # Get our hands on the released version either by using the cache
      # or by rebuilding it if necessary.
      - name: Cache Chez Previous Version
        id: previous-version-cache
        uses: actions/cache@v4
        with:
          path: Idris2-${{ env.IDRIS2_MINIMUM_COMPAT_VERSION }}
          key: ${{ runner.os }}-idris2-bootstrapped-chez-${{ env.IDRIS2_MINIMUM_COMPAT_VERSION }}
      - name : Build previous version
        if: steps.previous-version-cache.outputs.cache-hit != 'true'
        run: |
          wget "https://github.com/idris-lang/Idris2/archive/refs/tags/v$IDRIS2_MINIMUM_COMPAT_VERSION.tar.gz" -O "idris2-$IDRIS2_MINIMUM_COMPAT_VERSION.tgz"
          tar zxvf "idris2-$IDRIS2_MINIMUM_COMPAT_VERSION.tgz"
          cd "Idris2-$IDRIS2_MINIMUM_COMPAT_VERSION"
          make bootstrap
          cd ..
      - name: Install previous version
        run: |
          cd "Idris2-$IDRIS2_MINIMUM_COMPAT_VERSION"
          make install
          cd ..

      # Build the current version and save the installation.
      - name: Build current version
        run: |
          make && make install
      - name: Artifact Idris2 from previous version
        uses: actions/upload-artifact@v4
        with:
          name: ubuntu-installed-idris2-${{ env.IDRIS2_MINIMUM_COMPAT_VERSION }}-chez
          path: ~/.idris2/

  ######################################################################
  # Bootstrapping builds
  ######################################################################

  # CHEZ

  ubuntu-bootstrap-chez:
    needs: [initialise, quick-check]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: ubuntu]')
      || contains(needs.initialise.outputs.commit_message, '[ci: chez]')
    env:
      IDRIS2_CG: chez
      SCHEME: scheme
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
      - name: Make bootstrap folder readonly
        run: chmod -R a-w bootstrap
      - name: Build from bootstrap
        run: make bootstrap && make install
      - name: Artifact Bootstrapped Idris2
        uses: actions/upload-artifact@v4
        with:
          name: ubuntu-installed-bootstrapped-idris2-chez
          path: ~/.idris2/

  macos-bootstrap-chez:
    needs: [initialise, quick-check]
    runs-on: macos-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: macos]')
      || contains(needs.initialise.outputs.commit_message, '[ci: chez]')
    env:
      SCHEME: chez
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install build dependencies
        run: |
          brew update
          brew install --overwrite python@3.12
          brew install node
          brew install chezscheme
          brew install coreutils
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
      - name: Make bootstrap folder readonly
        run: chmod -R a-w bootstrap
      - name: Build Idris 2 from bootstrap
        run: make bootstrap && make install
        shell: bash
      - name: Artifact Bootstrapped Idris2
        uses: actions/upload-artifact@v4
        with:
          name: macos-installed-bootstrapped-idris2-chez
          path: ~/.idris2/

  windows-bootstrap-chez:
    needs: [initialise, quick-check]
    runs-on: windows-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: windows]')
      || contains(needs.initialise.outputs.commit_message, '[ci: chez]')
      || contains(needs.initialise.outputs.commit_message, '[ci: racket]')
    env:
      MSYSTEM: MINGW64
      MSYS2_PATH_TYPE: inherit
      SCHEME: scheme
      CC: gcc
    steps:
      - name: Init
        run: |
          git config --global core.autocrlf false
      - name: Checkout
        uses: actions/checkout@v4
      - name: Get Chez Scheme
        run: |
          git clone --depth 1 --branch v9.5.8a https://github.com/cisco/ChezScheme
          c:\msys64\usr\bin\bash -l -c "pacman -S --noconfirm tar make mingw-w64-x86_64-gcc"
          echo "PWD=$(c:\msys64\usr\bin\cygpath -u $(pwd))" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
      - name: Configure and Build Chez Scheme
        run: |
          c:\msys64\usr\bin\bash -l -c "cd $env:PWD && cd ChezScheme && ./configure --threads && make"
      - name: Set Path
        run: |
          $chez="$(pwd)\ChezScheme\ta6nt\bin\ta6nt"
          $idris="$(pwd)\.idris2"
          echo "$chez" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
          echo "$idris\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
          echo "IDRIS_PREFIX=$idris" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
          echo "PREFIX=$(c:\msys64\usr\bin\cygpath -u $idris)" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
      - name: Test Scheme
        run: |
          scheme --version
      - name: Bootstrap
        run: c:\msys64\usr\bin\bash -l -c "cd $env:PWD && make bootstrap"
      - name: Bootstrap test
        run: c:\msys64\usr\bin\bash -l -c "cd $env:PWD && make ci-windows-bootstrap-test"
      - name: Install
        run: c:\msys64\usr\bin\bash -l -c "cd $env:PWD && make install"
      - name: Artifact Idris2 from chez
        uses: actions/upload-artifact@v4
        with:
          name: windows-installed-bootstrapped-idris2-chez
          path: ${{ env.IDRIS_PREFIX }}

  nix-bootstrap-chez:
    needs: [initialise, quick-check]
    runs-on: ubuntu-latest
    if: |
      (!contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: nix]')
      || contains(needs.initialise.outputs.commit_message, '[ci: chez]'))
    steps:
    - uses: actions/checkout@v4
      with:
          fetch-depth: 0
    - uses: cachix/install-nix-action@v18
    - name: Test with nix
      env:
        NIX_CONFIG: "experimental-features = nix-command flakes"
      run: nix build .#checks.x86_64-linux.idris2Tests -L

  # RACKET

  ubuntu-bootstrap-racket:
    needs: [initialise, quick-check]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: ubuntu]')
      || contains(needs.initialise.outputs.commit_message, '[ci: racket]')

    env:
      IDRIS2_CG: racket
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install build dependencies
        run: |
          sudo apt-get install -y racket
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
      - name: Make bootstrap folder readonly
        run: chmod -R a-w bootstrap
      - name: Build from bootstrap
        run: make bootstrap-racket && make install
      - name: Artifact Bootstrapped Idris2
        uses: actions/upload-artifact@v4
        with:
          name: ubuntu-installed-bootstrapped-idris2-racket
          path: ~/.idris2/

  ######################################################################
  # Self-hosting builds and testing
  ######################################################################

  # CHEZ

  ubuntu-self-host-chez:
    needs: ubuntu-bootstrap-chez
    runs-on: ubuntu-latest
    env:
      IDRIS2_CG: chez
      SCHEME: scheme
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: ubuntu-installed-bootstrapped-idris2-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Build self-hosted
        run: make all IDRIS2_BOOT="idris2 -Werror" && make install
      - name: Test self-hosted
        run: make ci-ubuntu-test INTERACTIVE=''

  macos-self-host-chez:
    needs: macos-bootstrap-chez
    runs-on: macos-latest
    env:
      SCHEME: chez
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: macos-installed-bootstrapped-idris2-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          brew update
          brew install --overwrite python@3.12
          brew install chezscheme
          brew install node
          brew install coreutils
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Build self-hosted
        run: make all IDRIS2_BOOT="idris2 -Werror" && make install
        shell: bash
      - name: Test self-hosted
        run: make ci-macos-test INTERACTIVE=''
        shell: bash

  # RACKET

  ubuntu-self-host-racket:
    needs: ubuntu-bootstrap-racket
    runs-on: ubuntu-latest
    if: false
    env:
      IDRIS2_CG: racket
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: ubuntu-installed-bootstrapped-idris2-racket
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get install -y racket
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Build self-hosted
        run: make all IDRIS2_BOOT="idris2 -Werror" && make install
      - name: Test self-hosted
        run: make ci-ubuntu-test INTERACTIVE=''

  ubuntu-self-host-previous-version:
    needs: [initialise, quick-check]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: ubuntu]')
      || contains(needs.initialise.outputs.commit_message, '[ci: libs]')
    env:
      IDRIS2_CG: chez
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: ubuntu-installed-idris2-${{ env.IDRIS2_MINIMUM_COMPAT_VERSION }}-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Build self-hosted from previous version
        run: make all IDRIS2_BOOT="idris2 -Werror" && make install
      - name: Test self-hosted from previous version
        run: make ci-ubuntu-test INTERACTIVE=''
      - name: Artifact Idris2
        uses: actions/upload-artifact@v4
        with:
          name: idris2-nightly-chez
          path: ~/.idris2/

  windows-self-host-racket:
    needs: [initialise, windows-bootstrap-chez]
    runs-on: windows-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: windows]')
      || contains(needs.initialise.outputs.commit_message, '[ci: racket]')
    env:
      IDRIS2_CG: racket
      MSYSTEM: MINGW64
      MSYS2_PATH_TYPE: inherit
      CC: gcc
      RACKET_RACO: raco
    steps:
      - name: Init
        run: |
          git config --global core.autocrlf false
          echo "PWD=$(c:\msys64\usr\bin\cygpath -u $(pwd))" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
      - name: Checkout
        uses: actions/checkout@v4
      - name: Get Chez Scheme
        run: |
          git clone --depth 1 --branch v9.5.8a https://github.com/cisco/ChezScheme
          c:\msys64\usr\bin\bash -l -c "pacman -S --noconfirm tar make mingw-w64-x86_64-gcc"
          echo "PWD=$(c:\msys64\usr\bin\cygpath -u $(pwd))" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
      - name: Configure and Build Chez Scheme
        run: |
          c:\msys64\usr\bin\bash -l -c "cd $env:PWD && cd ChezScheme && ./configure --threads && make"
      - name: Set Path
        run: |
          $chez="$(pwd)\ChezScheme\ta6nt\bin\ta6nt"
          $idris="$(pwd)\.idris2"
          echo "$chez" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
          echo "$idris\bin" | Out-File -FilePath $env:GITHUB_PATH -Encoding utf8 -Append
          echo "IDRIS_PREFIX=$idris" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
          echo "PREFIX=$(c:\msys64\usr\bin\cygpath -u $idris)" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: windows-installed-bootstrapped-idris2-chez
          path: ${{ env.IDRIS_PREFIX }}
      - name: Install build dependencies
        uses: Bogdanp/setup-racket@v1.4
        with:
          variant: 'CS'
          version: 'stable'
          distribution: 'full'
      - name: Self host
        run: |
          c:\msys64\usr\bin\bash -l -c "cd $env:PWD && make"
      # TODO: fix the broken tests!
      # - name: Test
      #  run: c:\msys64\usr\bin\bash -l -c "cd $env:PWD && make ci-windows-test"
      - name: Install
        run: c:\msys64\usr\bin\bash -l -c "cd $env:PWD && make install"

  ######################################################################
  # Ubuntu API
  ######################################################################

  ubuntu-build-api:
    needs: ubuntu-bootstrap-chez
    runs-on: ubuntu-latest
    env:
      IDRIS2_CG: chez
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: ubuntu-installed-bootstrapped-idris2-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Build API
        run: make install-api
        shell: bash
      - name: Test API
        run: cd tests/idris2/api/api001 && ./run "$HOME/.idris2/bin/idris2"
        shell: bash

  ######################################################################
  # Testing some libraries on Ubuntu and pack.
  #
  # We are particularly interested in libraries that are heavily using
  # dependent types, that are prone to find bugs and regressions in the
  # compiler.
  ######################################################################

  ######################################################################
  # Test that we can build Collie
  ######################################################################

  ub-test-collie:
    needs: [initialise, ubuntu-self-host-previous-version]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: libs]')
    env:
      IDRIS2_CG: chez
    steps:
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: idris2-nightly-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: 'ohad/collie'
      - name: Build Collie
        run: |
          make

  ########################################################################
  # Test that we can build Frex
  ########################################################################

  ub-test-frex:
    needs: [initialise, ubuntu-self-host-previous-version]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: libs]')
    env:
      IDRIS2_CG: chez
    steps:
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: idris2-nightly-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: 'frex-project/idris-frex'
      - name: Build Frex
        run: |
          make
          make test

  ######################################################################
  # Test that we can build Stefan Höck's elab-util and pack
  ######################################################################

  # ELAB-UTIL

  ub-test-elab-util:
    needs: [initialise, ubuntu-self-host-previous-version]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: libs]')
    env:
      IDRIS2_CG: chez
    steps:
      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: idris2-nightly-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: 'stefan-hoeck/idris2-elab-util'
      - name: Build idris2-elab-util
        run: |
          make all

  # PACK
  #
  # N.B. instead of bootstrapping pack, we use the dockerimage where it is
  # already, and then use pack to rebuild pack with this job's idris2 sources

  ub-pack-test-pack:
    needs: [initialise, ubuntu-self-host-previous-version]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: libs]')
    env:
      IDRIS2_CG: chez
      PACK_DIR: /root/.pack
    strategy:
      fail-fast: false
    # N.B.:
    container: ghcr.io/stefan-hoeck/idris2-pack:latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: 'stefan-hoeck/idris2-pack'
      # by default, pack uses the main idris2 head, not the current job's one
      - name: Toml setup
        run: |
          { echo "[idris2]"
            echo "url = \"https://github.com/${GITHUB_REPOSITORY}\""
            echo "commit = \"latest:${GITHUB_REF_NAME}\""
            echo "bootstrap  = true"
          } > pack.toml
      - name: Build idris2-pack
        run: |
          git config --global --add safe.directory "${PWD}"

          # only fetch to a new branch if we're not on main (otherwise, git complains)
          if [[ $(git branch --show-current) != 'main' ]]
          then git fetch "https://github.com/${GITHUB_REPOSITORY}" "${GITHUB_REF}:${GITHUB_REF_NAME}"
          else git pull origin main
          fi

          # rebuild pack with the fetched Idris2
          pack install pack

  ######################################################################
  # Test that we can build the LSP
  ######################################################################

  ub-pack-test-lsp:
    needs: [initialise, ubuntu-self-host-previous-version]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: libs]')
    env:
      IDRIS2_CG: chez
      PACK_DIR: /root/.pack
    # LSP is vastly easier to build using pack, so do that
    container: ghcr.io/stefan-hoeck/idris2-pack:latest
    strategy:
      fail-fast: false
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          repository: 'idris-community/idris2-lsp'
      - name: Toml setup
        run: |
          { echo "[idris2]"
            echo "url = \"https://github.com/${GITHUB_REPOSITORY}\""
            echo "commit = \"latest:${GITHUB_REF_NAME}\""
            echo "bootstrap  = true"
          } > pack.toml
      # make sure pack is running the PR's Idris2 before building LSP
      - name: Build pack with PR-Idris
        run: |
          git config --global --add safe.directory "${PWD}"

          # only fetch to a new branch if we're not on main (otherwise, git complains)
          if [[ $(git branch --show-current) != 'main' ]]
          then git fetch "https://github.com/${GITHUB_REPOSITORY}" "${GITHUB_REF}:${GITHUB_REF_NAME}"
          else git pull origin main
          fi

          pack install pack
      - name: Build+install idris2-lsp
        run: |
          pack --no-prompt install-app idris2-lsp

  ######################################################################
  # Test that we can use Katla to build html doc of the libs
  ######################################################################

  ub-test-katla-and-html:
    needs: [initialise, ubuntu-self-host-previous-version]
    runs-on: ubuntu-latest
    if: |
      !contains(needs.initialise.outputs.commit_message, '[ci:')
      || contains(needs.initialise.outputs.commit_message, '[ci: html]')
    env:
      IDRIS2_CG: chez
    steps:

      - name: Initialise DEPLOY variable
        run: |
          if [[ '${{ github.ref }}' == 'refs/heads/main' ]]; then
             echo "IDRIS2_DEPLOY=true" >> "$GITHUB_ENV"
          fi

      - name: Download Idris2 Artifact
        uses: actions/download-artifact@v4
        with:
          name: idris2-nightly-chez
          path: ~/.idris2/
      - name: Install build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y chezscheme markdown
          echo "$HOME/.idris2/bin" >> "$GITHUB_PATH"
          chmod +x "$HOME/.idris2/bin/idris2" "$HOME/.idris2/bin/idris2_app/"*
      - name: Checkout idris2
        uses: actions/checkout@v4
      - name: Build API
        run: make install-api
        shell: bash
      - name: Checkout collie
        uses: actions/checkout@v4
        with:
          repository: 'ohad/collie'
      - name: Build and install Collie
        run: |
          make install
      - name: Checkout idrall
        uses: actions/checkout@v4
        with:
          repository: 'alexhumphreys/idrall'
      - name: Build and install idrall
        run: |
          make install
      - name: Checkout katla
        uses: actions/checkout@v4
        with:
          repository: 'idris-community/katla'
      - name: Build and install katla
        run: |
          make
          mkdir -p "${HOME}"/.local/bin/
          cp -r build/exec/* "${HOME}"/.local/bin/
          echo "${HOME}/.local/bin" >> "$GITHUB_PATH"
      - name: Checkout idris2
        uses: actions/checkout@v4
      - name: Build html doc & landing page
        run: |
          make -C libs/prelude/ install docs IDRIS2=idris2
          make -C libs/base/ install docs IDRIS2=idris2
          make -C libs/contrib/ install docs IDRIS2=idris2
          make -C libs/network/ install docs IDRIS2=idris2
          make -C libs/linear/ install docs IDRIS2=idris2
          make -C libs/test/ install docs IDRIS2=idris2
          make -C libs/papers/ install docs IDRIS2=idris2

          cd .github/scripts
          ./katla.sh
          cd -
          cd www/
          ./katla.sh
          cd -
          cp -r www/html/* .github/scripts/html/
          cp www/source/idris-logo-base.png .github/scripts/html/
      - name: Deploy HTML
        uses: JamesIves/github-pages-deploy-action@v4.4.3
        if: ${{ success() && env.IDRIS2_DEPLOY }}

        with:
          branch: gh-pages
          folder: .github/scripts/html/
          git-config-name: Github Actions