automate releases

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+name: "Release"
+on:
+  push:
+    tags:
+      - v**
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: mad9000/actions-find-and-replace-string@1
+      id: version
+      with:
+        source: "${{ github.ref_name }}"
+        find: 'v'
+        replace: ''
+    - uses: nikita-volkov/[email protected]
+      with:
+        mode: set
+        set-value: "${{ steps.version.outputs.value }}"
+    - uses: stefanzweifel/git-auto-commit-action@v4
+      with:
+        commit_message: "Bumping *.cabal to ${{ steps.version.outputs.value  }}"
+        branch: master
+    - run: cabal v2-sdist all
+    - uses: haskell-actions/hackage-publish@v1
+      with:
+        # http://hackage.haskell.org/users/account-management
+        hackageToken: ${{ secrets.HACKAGE_AUTH_TOKEN }}
+        packagesPath: dist-newstyle/sdist
+        #docsPath: ${{ runner.temp }}/docs
+        publish: true