Show nix health

[srid]

Add a view that displays all the information that https://github.com/srid/nix-health produces.

• nix version (check min, after Parse Nix version #28)
• max-jobs (Display some of nix show-config #19, Start adding health checks #29)
• nix_health: check $USER is in trusted-users #37
• flakes enabled
• rosetta check (nix_health: check if rosetta is in use #58)
• Add direnv health check (flake-specific) #70
• nix_health: Flake-specific health checks #60
  • Requires nix_health: per check configuration #63

[srid]

https://crates.io/crates/nix_health

will publish to nixpkgs next.

[srid]

Waiting for the nixpkgs PR to be merged,

NixOS/nixpkgs#261683

Then people can just run nix run nixpkgs#nix-health.