fix running coverage

.github/workflows/check.yaml

@@ -117,14 +117,10 @@ jobs:
 
       - uses: hynek/setup-cached-uv@v2
 
-      - name: Prepare tox
-        run: |
-          echo TOX_PYTHON=py$(echo ${{ matrix.python-version }} | tr -d .) >>$GITHUB_ENV
-
       - run: >-
           uvx --with=tox-uv
           tox run
-          -e ${{ env.TOX_PYTHON }}-coverage
+          -e py${{ matrix.python-version }}-coverage
         env:
           COVERAGE_FILE: ".coverage.${{ matrix.os }}.${{ matrix.python-version }}"
           # Alternatively you can run coverage with the --parallel flag or add
@@ -137,6 +133,7 @@ jobs:
         with:
           name: coverage-${{ matrix.os }}-${{ matrix.python-version }}
           path: .coverage.${{ matrix.os }}.${{ matrix.python-version }}
+          if-no-files-found: error
 
   coverage:
     name: Coverage

tox.ini

@@ -17,12 +17,24 @@ pass_env = SETUPTOOLS_SCM_PRETEND_VERSION
 package = wheel
 wheel_build_env = .pkg
 extras = test
+allowlist_externals =
+    echo
+    false
+# This and the next few testenvs are a workaround for
+# https://github.com/tox-dev/tox/issues/2858.
+commands =
+    echo "Unrecognized environment name {envname}"
+    false
 
 
 [testenv:tests]
 commands = pytest {posargs:-n auto}
 
 
+[testenv:py3{,.}{8,9,10,11,12}-tests]
+commands = {[testenv:tests]commands}
+
+
 [testenv:mypy]
 commands = mypy --install-types --non-interactive {posargs:subliminal tests}
 
@@ -34,6 +46,11 @@ set_env =
     COVERAGE_PROCESS_START = pyproject.toml
 commands = pytest --cov --cov-report=term-missing:skip-covered {posargs:-n auto}
 
+
+[testenv:py3{,.}{8,9,10,11,12}-coverage]
+commands = {[testenv:coverage]commands}
+
+
 [testenv:coverage-core]
 usedevelop = true
 deps = coverage[toml]>=7
@@ -45,6 +62,11 @@ commands =
         --omit='subliminal/cli.py,subliminal/converters/*,subliminal/providers/*,subliminal/refiners/*' \
         --skip-covered --fail-under=100
 
+
+[testenv:py3{,.}{8,9,10,11,12}-coverage-core]
+commands = {[testenv:coverage-core]commands}
+
+
 [testenv:pre-commit]
 description =
     run pre-commit-defined linters under `{basepython}`