github actions: set up environments for 'deployments' tab

Author: karlicoss

.github/workflows/main.yml

@@ -89,7 +89,14 @@ jobs:
     permissions:
       # necessary for Trusted Publishing
       id-token: write
-
+    env:
+      # always deploy merged master to test pypi
+      # always deploy tags to release pypi
+      TARGET: ${{ startsWith(github.event.ref, 'refs/tags/') && 'pypi' || 'testpypi' }}
+    environment:
+      # for "deployments" tab on github
+      name: ${{ env.TARGET }}
+      url: https://${{ env.TARGET == 'pypi' && 'pypi.org' || 'test.pypi.org' }}/project/${{ steps.meta.outputs.pypi_name }}/
     steps:
     - uses: actions/checkout@v6
       with:
@@ -101,12 +108,11 @@ jobs:
         python-version: '3.12'
         enable-cache: false  # we don't have lock files during initial CI checkout, so can't use them as cache key
 
-    - name: 'release to test pypi'
-      # always deploy merged master to test pypi
-      if: github.event.ref == format('refs/heads/{0}', github.event.repository.master_branch)
-      run: .ci/release --use-test-pypi
+    - name: 'release ${{ steps.meta.outputs.pypi_name }} to ${{ env.TARGET }}'
+      run: .ci/release ${{ env.TARGET == 'testpypi' && '--use-test-pypi' || '' }}
 
-    - name: 'release to prod pypi'
-      # always deploy tags to release pypi
-      if: startsWith(github.event.ref, 'refs/tags/')
-      run: .ci/release
+    - id: meta
+      shell: bash
+      run: |
+        pypi_name=$(unzip -p dist/*.whl '*.dist-info/METADATA' | awk '/^Name:/ {print $2; exit}')
+        echo "pypi_name=$pypi_name" >> "$GITHUB_OUTPUT"