add documenation for installation via nix

[aaschmid]

Introduced in nixpkgs by NixOS/nixpkgs#150282
findable with https://search.nixos.org/packages?channel=unstable&show=colima&from=0&size=50&sort=relevance&type=packages&query=colima.

Note: It will take another 5-7 days that package will appeare in nixpkgs-unstable. However from than it will be automatically included into the next major nix versions.

[abiosoft]

@aaschmid thanks a lot for this.

Is there a way to support installing bleeding edge version like homebrew? Considering that project is still early and in active development, there are chances that the current unreleased version is far ahead of the last stable release, and some users would not mind that.

[aaschmid]

@abiosoft: Yes, there is a way but this is very nix specific. I can document this, however, every nix user should now how to override versions ;-)

Edit: haven't see #85 🙈 which should be fixed now :-)

[aaschmid]

I subscribed to new releases and will asap update the nixpkgs with ;-)

(Side note: The biggest issue currently might be #54, #64, #83 which depend on lima-vm/lima#231 afik)