$ pre-commit run --all-files
[INFO] Initializing environment for https://github.com/PyCQA/isort.
[ERROR] The hook `isort` specifies `language_version` but is using language `system` which does not install an environment. Perhaps you meant to use a specific language?
for example:
right now you get an empty "failed" message: https://results.pre-commit.ci/run/github/330707186/1619429009.yUl3BKyQRjimpxm3IKR17w