fix(cache): always keep cache

templates/gitlab-ci-python.yml

@@ -812,15 +812,15 @@ stages:
     - name: "$TBC_TRACKING_IMAGE"
       command: ["--service", "python", "6.10.0"]
   variables:
-    # most Python tools honour XDG specs
+    # set local cache dir; most Python tools honour XDG specs
     XDG_CACHE_HOME: "$CI_PROJECT_DIR/.cache"
     PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
-    # Poetry support: force virtualenv not in project dir & use local cache dir
     POETRY_CACHE_DIR: "$CI_PROJECT_DIR/.cache/poetry"
-    POETRY_VIRTUALENVS_IN_PROJECT: "false"
     PIPENV_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pipenv"
+    POETRY_VIRTUALENVS_IN_PROJECT: "false"
   cache:
     key: "$CI_COMMIT_REF_SLUG-python"
+    when: always
     paths:
       - .cache
   before_script: