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Please include the following checklist in your PR:

* [ ] Patches conform to the [coding conventions](https://github.com/haskell/cabal/blob/master/CONTRIBUTING.md#conventions).
* [ ] Any changes that could be relevant to users have been recorded in the changelog (add file to `changelog.d` directory).
* [ ] The documentation has been updated, if necessary.

Please also shortly describe how you tested your change. Bonus points for added tests!