release.yml

name: Release

on:
  push:
    tags:
    - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10

jobs:
  build:
    name: Create and upload release tarballs
    if: github.event.base_ref == 'refs/heads/master'
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v3

    - name: Install Nix
      uses: cachix/install-nix-action@v20

    - name: Prepare metadata
      id: metadata
      run: |
        echo "VERSION=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
        echo "TARBALL=futhark-${GITHUB_REF#refs/tags/v}-linux-x86_64.tar.xz" >> $GITHUB_OUTPUT

    - name: Build tarball
      env:
        VERSION: ${{ steps.metadata.outputs.VERSION }}
      run: nix-build --argstr suffix $VERSION-linux-x86_64 --argstr commit $GITHUB_SHA

    - name: Extract release changes
      env:
        VERSION: ${{ steps.metadata.outputs.VERSION }}
      run:
        sh tools/changelog.sh $VERSION < CHANGELOG.md > release_changes.md

    - name: Create release
      id: create_release
      uses: actions/create-release@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        tag_name: ${{ github.ref }}
        release_name: ${{ steps.metadata.outputs.VERSION }}
        body_path: release_changes.md
        draft: false
        prerelease: false

    - name: Upload tarball
      id: upload-release-asset
      uses: actions/upload-release-asset@v1
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      with:
        upload_url: ${{ steps.create_release.outputs.upload_url }}
        asset_path: result/${{ steps.metadata.outputs.TARBALL }}
        asset_name: ${{ steps.metadata.outputs.TARBALL }}
        asset_content_type: application/x-xz

    - name: Install SSH key
      uses: shimataro/ssh-key-action@v2
      with:
        key: ${{ secrets.SSHKEY }}
        known_hosts: ${{ secrets.KNOWN_HOSTS }}

    - name: scp to server
      env:
        TARBALL: ${{ steps.metadata.outputs.TARBALL }}
      run: scp -o StrictHostKeyChecking=no result/$TARBALL futhark@futhark-lang.org:/var/www/htdocs/futhark-lang.org/releases

  upload-to-hackage:
    name: Upload to Hackage
    if: github.event.base_ref == 'refs/heads/master'
    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v3

    - name: Install Nix
      uses: cachix/install-nix-action@v20

    - uses: cachix/cachix-action@v12
      with:
        name: futhark
        signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'

    - name: Upload to Hackage
      run: |
        export HACKAGE_KEY
        export VERSION
        nix-shell --run 'cabal update'
        nix-shell --run tools/release/hackage.sh
      env:
        HACKAGE_KEY: ${{ secrets.HACKAGE_KEY }}
        VERSION: ${{ steps.metadata.outputs.VERSION }}