Getting rid of nix’s git staging requirements

[jkarni]

It’s incredibly annoying that unstaged files get ignored, and that we get warnings every time the tree is dirty. We should fix this somehow. I think only gitignored files should be ignored.

I think potentially we could upstream this to nix. Or we could fork nix.

[jkarni]

As part of this, both the documentation and our flake.nix intent-to-add logic should be removed.

[jfroche]

changing domenkozar/nix@bf9922e#diff-4de86ddf9ae3dd43a49cc14cc56e2f6b29f51fde7a0603e3ab7c5cd34599b5d7R395 to something which include:

git ls-files --cached -z --others --exclude-from=.gitignore seem to do the trick but only takes into account the root .gitignore

[alexdavid]

There seems to be --exclude-standard which handles nested .gitignore files.

[jfroche]

I have opened the PR into nix NixOS/nix#9352
Someone else opened a similar change and got this reply from the nix team: NixOS/nix#6858 (comment) but at least this new PR is opt-in
I will add it into garn tomorrow

[jfroche]

Garn PR: #406