publish.yml

# NOTE: this is stolen from cargo-dist workflow file

# Publishes a release to crates.io
#
# To trigger this:
#
# - go to Actions > Publish
# - click the Run Workflow dropdown in the top-right
# - enter the tag of the release as “Release Tag” (e.g. v0.3.18)
name: Publish

on:
  workflow_dispatch:
    inputs:
      tag:
        description: 'Release Tag'
        required: true
        type: string

jobs:
  # This is a bit convoluted so that the other parts of this workflow remain
  # the same even if the way the tag is defined is more complicated
  download-tag:
    runs-on: ubuntu-latest
    outputs:
        tag: ${{ steps.print-tag.outputs.tag }}
    steps:
      - id: print-tag
        run: echo "tag=${{ inputs.tag }}" >> "$GITHUB_OUTPUT"

  # publish the current repo state to crates.io
  cargo-publish:
    runs-on: ubuntu-latest
    needs: download-tag
    steps:
      - name: Checkout sources
        uses: actions/checkout@v3
        with:
          ref: ${{needs.download-tag.outputs.tag}}
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
      - run: cargo publish --token ${CRATES_TOKEN}
        env:
          CRATES_TOKEN: ${{ secrets.CRATES_TOKEN }}