findup: init at 1.0

[booniepepper]

Motivation for this change

Imports findup - a utility for searching through parents.

Comes in handy when in some nested directory but you want to traverse back up.

Example: if you're deep in some npm project, instead of cd ../../../../.. you can do something like cd $(findup package.json).

Also useful for finding things like the nearest .git directory, nearest .envrc for direnv, or similar for pipenv, rbenv, asdf .tool-versions file, etc.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 22.05 Release Notes (or backporting 21.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[booniepepper]

Note: The two "neutral" checks are because zig 0.9.0 is marked as "broken" for darwin platforms.

I see zig 0.9.0 being introduced here #152163

[booniepepper]

I marked findup as "broken" for darwin platforms with some comments on where to watch.

Most likely #86299 will get done before Zig starts supporting older macOS versions, and then this should "just work" on darwin as well.

[applePrincess]

If this broken is only because of Zig compiler then you should leave it without. Nix is clevar enough to set broken for packages that require zig.

[booniepepper]

Ahh thanks, I didn't know!

[applePrincess]

Result of nixpkgs-review pr 154860 run on x86_64-linux 1

1 package built:

• findup

[applePrincess]

[nix-shell:~/.cache/nixpkgs-review/pr-154860-2]$ ls
build.nix  logs  nixpkgs  report.json  report.md  results  shell.nix

[nix-shell:~/.cache/nixpkgs-review/pr-154860-2]$ cd results/

[nix-shell:~/.cache/nixpkgs-review/pr-154860-2/results]$ ./findup/bin/findup build.nix
/home/alice/.cache/nixpkgs-review/pr-154860-2

looks good to me.

[onny]

Result of nixpkgs-review pr 154860 run on x86_64-linux 1

1 package built:

• findup

[onny]

Thank you!

[github-actions]

Successfully created backport PR #189861 for release-22.05.