Format all Nix files using the officially approved formatter,
making the CI check introduced in the previous commit succeed:
nix-build ci -A fmt.check
This is the next step of the of the [implementation](https://github.com/NixOS/nixfmt/issues/153)
of the accepted [RFC 166](https://github.com/NixOS/rfcs/pull/166).
This commit will lead to merge conflicts for a number of PRs,
up to an estimated ~1100 (~33%) among the PRs with activity in the past 2
months, but that should be lower than what it would be without the previous
[partial treewide format](https://github.com/NixOS/nixpkgs/pull/322537).
Merge conflicts caused by this commit can now automatically be resolved while rebasing using the
[auto-rebase script](8616af08d9/maintainers/scripts/auto-rebase).
If you run into any problems regarding any of this, please reach out to the
[formatting team](https://nixos.org/community/teams/formatting/) by
pinging @NixOS/nix-formatting.
gebner has been an amazing maintainer, but appears to have moved on:
the last commit on nixpkgs appears to have been in Feb 2023, and
they have not been responding to pings (e.g.
https://github.com/NixOS/nixpkgs/issues/347764).
They also approved https://github.com/NixOS/nixpkgs/pull/337292 before,
but that PR had some additional changes and was closed without merging.
This PR is in no way intended to diminuish Gabriel's accomplishments,
and they're welcome to just say so if they'd prefer this PR not to
be merged. Also, even if it's merged, of course they're always welcome
to return to activity and be added back. The intent of this PR is to
give more realistic expectations around the maintainership of these
packages, and to invite others to step up for maintainership if they
rely on those packages.
This seems in line with https://github.com/NixOS/nixpkgs/tree/master/maintainers#how-to-lose-maintainer-status
The yaya and yaya-hedgehog packages used to have a cyclic dependency, where the
test suites for yaya depended on the yaya-hedgehog library, which in turn
depended on yaya library. This works fine with Cabal in some contexts, but
causes problems in others.
It was resolved by moving the yaya test suites into the yaya-hedgehog package.
Therefore, this override to avoid the cycle in Nixpkgs is no longer necessary.
