std depends on "nix2container" being called "n2c"

[jg-cantaa]

Due to this line:

https://github.com/divnix/std/blob/01adf87cf1ed37bcd72a90f2a4e385d76c81c825/src/std/fwlib/blockTypes/containers.nix#L30C24-L30C24

std requires downstream flakes to name "nix2container" as "n2c" in order to use the "load" action.