This commit was created by a combination of scripts and tools:
- an ast-grep script to prefix things in meta with `lib.`,
- a modified nixf-diagnose / nixf combination to remove unused `with
lib;`, and
- regular nixfmt.

Co-authored-by: Wolfgang Walther <walther@technowledgy.de>

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](https://github.com/NixOS/nixpkgs/tree/8616af08d915377bd930395f3b700a0e93d08728/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.

After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.

Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.

A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.

This commit was automatically created and can be verified using

    nix-build https://github.com/infinisil/treewide-nixpkgs-reformat-script/archive/a08b3a4d199c6124ac5b36a889d9099b4383463f.tar.gz \
      --argstr baseRev 57b193d8ddeaf4f5219d2bae1d23b081e4906e57
    result/bin/apply-formatting $NIXPKGS_PATH

Prior to August 2023, any config.guess generated by autoconf will
include a hardcoded /usr/bin/uname invocation for FreeBSD on any
architecture other than arm. This clearly doesn't work under nix.
We must then update or otherwise patch each old config.guess.

Based on ofborg feedback.
Part of https://github.com/NixOS/nixpkgs/pull/246386

Autoreconf was initially added in e44dd84664f ("libtool2: macOS 11
support") for configure patches. The patches were removed since 2.4.7
release. Let's drop these dependencies to make boostrap tree leaner.

The diff of bootstrap tree before and after the change:

    $ nix-store --query --graph $(nix-instantiate -A stdenv) |
        fgrep ' -> ' | awk '{print $3}' | sort -u |
        sed 's/"[0-9a-z]\{32\}-/"/g' | sort > before

    $ nix-store --query --graph $(nix-instantiate -A stdenv) |
        fgrep ' -> ' | awk '{print $3}' | sort -u |
        sed 's/"[0-9a-z]\{32\}-/"/g' | sort > after

    $ diff -U0 before after

    --- before
    +++ after
    @@ -64,2 +63,0 @@
    -"help2man-1.49.2.drv"
    -"help2man-1.49.2.drv"
    @@ -77 +74,0 @@
    -"libxcrypt-4.4.33.drv"
    @@ -88,4 +84,0 @@
    -"perl-5.36.0.drv"
    -"perl-5.36.0.drv"
    -"perl5.36.0-gettext-1.07.drv"
    -"perl5.36.0-gettext-1.07.drv"

This removes 2 of 3 builds of `perl` and `help2man` dependencies.

Co-authored-by: Adam Joseph <54836058+amjoseph-nixpkgs@users.noreply.github.com>

Libtool 2.4.7 changed the shebangs in `libtoolize.in` and `ltmain.sh`
from `/bin/sh` (which is a special sandbox exception) to `/usr/bin/env
sh` (which is not).

My PR (#167071) to bump the libtool version adjusted both of these
shebangs, when it should only have adjusted the one in
`libtoolize.in`.

`ltmain.sh` is not a script to be *executed* at
`libtool`-invocation-time.  It is a script which is *vendored into a
release* at `libtoolize`-invocation-time.

Thanks to @trofi for reporting this

  https://github.com/NixOS/nixpkgs/pull/167071#pullrequestreview-1079484605