Currently isort uses .travis to run tests cases, however these tests can be very slow to run, as travis imposes limits on how many run in parallel. This ticket represents the work to move the tests to run on github actions to move past the travis limitation.
Please see PR https://github.com/timothycrosley/isort/pull/1122 for a start on this.
This is now merged in, and active for all testing across OSes. Thanks!
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Please see PR https://github.com/timothycrosley/isort/pull/1122 for a start on this.