ci: activate the publication workflow on tag push

Author: joanise

.github/workflows/build.yml

@@ -2,13 +2,11 @@ name: Build and upload to PyPI
 
 on:
   workflow_dispatch:
-  pull_request:
   push:
     branches:
       - dev.ej/cibuild
-  release:
-    types:
-      - published
+    tags:
+      - v[0-9]+.[0-9]+.[0-9]+
 
 permissions:
   contents: read
@@ -57,22 +55,24 @@ jobs:
           name: cibw-sdist
           path: dist/*.tar.gz
 
-  #upload_pypi:
-    #needs: [build_wheels, build_sdist]
-    #runs-on: ubuntu-latest
-    #environment: pypi
-    #permissions:
-      #id-token: write
-    #if: github.event_name == 'release' && github.event.action == 'published'
+  upload_pypi:
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    environment:
+      name: testpypi
+      url: https://test.pypi.org/p/ilt-editdistance
+    permissions:
+      id-token: write
+    ##if: github.event_name == 'release' && github.event.action == 'published'
     ## or, alternatively, upload to PyPI on every tag starting with 'v' (remove on: release above to use this)
-    ## if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
-    #steps:
-      #- uses: actions/download-artifact@v5
-        #with:
-          ## unpacks all CIBW artifacts into dist/
-          #pattern: cibw-*
-          #path: dist
-          #merge-multiple: true
-      #- uses: pypa/gh-action-pypi-publish@release/v1
-        ## with:
-          ## To test: repository-url: https://test.pypi.org/legacy/
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - uses: actions/download-artifact@v5
+        with:
+          # unpacks all CIBW artifacts into dist/
+          pattern: cibw-*
+          path: dist
+          merge-multiple: true
+      - uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          repository-url: https://test.pypi.org/legacy/