Format Rust, Nix and Bash via treefmt

[infinisil]

Prompted by #46 (comment) (cc @willbush). I didn't use a bash formatter, but https://github.com/lovesegfault/beautysh seems to almost match what I've been doing!

For Nix formatting we obviously use https://github.com/NixOS/nixfmt :)

[willbush]

Can we add a .git-blame-ignore-revs which helps clean up git blame a lot? It's also useful to add to ones git config (docs).

[willbush]

https://github.com/lovesegfault/beautysh

Maintenance status of the repo is a little concerning. We might be able to get close to the same format with these options on https://github.com/mvdan/sh

Printer options:

  -i,  --indent uint       0 for tabs (default), >0 for number of spaces
  -bn, --binary-next-line  binary ops like && and | may start a line
  -ci, --case-indent       switch cases will be indented
  -sr, --space-redirects   redirect operators will be followed by a space
  -kp, --keep-padding      keep column alignment paddings
  -fn, --func-next-line    function opening braces are placed on a separate line

[infinisil]

https://github.com/lovesegfault/beautysh

Maintenance status of the repo is a little concerning.

Ohh I looked at your shfmt suggestion, I thought it was https://github.com/patrickvane/shfmt, which when compared to beautysh looked more concerning. Didn't know that https://github.com/mvdan/sh provides shfmt nowadays, switching to that now!

We might be able to get close to the same format with these options on https://github.com/mvdan/sh

Turns out at least the tabs vs spaces is nicely handled without extra config because it adheres to our .editorconfig.

[philiptaron]

✅

treefmt-nix is pretty cool.

[philiptaron]

Look at that dogfooding!

[philiptaron]

81d712a

[philiptaron]

b1306dd