fix gha

Author: ychiucco

.github/workflows/ci_poetry.yml

@@ -44,14 +44,14 @@ jobs:
 
       - name: Test core library with pytest
         env:
-          COVERAGE_FILE: "coverage-data-${{ matrix.python-version }}-core"
+          COVERAGE_FILE: coverage-data-core-${{ matrix.python-version }}
         run: poetry run coverage run -m pytest tests --ignore tests/tasks  --ignore tests/dev
 
       - name: Upload coverage data
         uses: actions/upload-artifact@v4
         with:
-          name: "coverage-data-${{ matrix.python-version }}-core"
-          path: "coverage-data-*"
+          name: coverage-data-core-${{ matrix.python-version }}
+          path: coverage-data-core-${{ matrix.python-version }}*
 
   tests_tasks:
     name: "Tasks, Python ${{ matrix.python-version }}"
@@ -99,15 +99,14 @@ jobs:
 
       - name: Test tasks with pytest
         env:
-          COVERAGE_FILE: "coverage-data-${{ matrix.python-version }}-tasks"
-
+          COVERAGE_FILE: coverage-data-tasks-${{ matrix.python-version }}
         run: poetry run coverage run -m pytest tests/dev tests/tasks -s --log-cli-level info
 
       - name: Upload coverage data
         uses: actions/upload-artifact@v4
         with:
-          name: "coverage-data-${{ matrix.python-version }}-tasks"
-          path: "coverage-data-*"
+          name: coverage-data-tasks-${{ matrix.python-version }}
+          path: coverage-data-tasks-${{ matrix.python-version }}*
 
   coverage:
     name: Coverage
@@ -129,17 +128,19 @@ jobs:
           pattern: coverage-data-*
           merge-multiple: true
 
+      - name: Combine coverage
+        # Combines all the downloaded coverage artifacts in a single `.coverage` file,
+        # which will then be used by `py-cov-action/python-coverage-comment-action`.
+        # We added this step to replace the variable `MERGE_COVERAGE_FILES: true`
+        # in the next step, which had started to raise errors
+        # (https://github.com/fractal-analytics-platform/fractal-server/pull/1725).
+        run: coverage combine coverage-data-*
+
       - name: Add coverage comment to Pull Requests
         id: coverage_comment
         uses: py-cov-action/python-coverage-comment-action@v3
-        env:
-          # Base name of the data files to operate on. Defaults to `.coverage'.
-          # [env: COVERAGE_FILE].
-          # (https://coverage.readthedocs.io/en/latest/cmd.html#cmd-combine)
-          COVERAGE_FILE: "coverage-data-"
         with:
           GITHUB_TOKEN: ${{ github.token }}
-          MERGE_COVERAGE_FILES: true
           MINIMUM_GREEN: 90
           MINIMUM_ORANGE: 60
           ANNOTATE_MISSING_LINES: true