prettier in nixpkgs is out of sync/broken

[dhess]

See:

• feat: Add an ActionButton component. #136 (comment)
• npm prettier NixOS/nixpkgs#126804 (comment)
• Packages from nodePackages_latest don't result in executables in $PATH. NixOS/nixpkgs#145432
• [WIP] Update nodePackages with node2nix 1.10.0 NixOS/nixpkgs#146440

This is causing problems in our CI, because we can't use the Yarn-installed version of prettier in the pre-commit-hooks check, and we can't use the pinned nixpkgs version because of the breakage.

Therefore, in #136, I disabled the pre-commit-hooks prettier check. We'll need to re-enable it at a later date.

[dhess]

nodejs 16.x is still broken in nixpkgs, nearly 2 months after this bug was filed upstream: NixOS/nixpkgs#145432 (comment)

I note this here only to support the argument that perhaps Nix isn't doing much for us on primer-app, besides ensuring everyone is starting with the same Nix shell. It's pretty obvious to me at this point that nobody really uses Nix for building JavaScript/TypeScript applications.

[dhess]

Once #358 is merged, it's questionable whether we should be running pre-commit-checks using Nix, except for maybe the Nix formatting checks.