nixos-config/lib/trivial.nix

40 lines
1.1 KiB
Nix
Raw Normal View History

{ pkgs, lib, self }:
{
/* Count the attributes with the given predicate.
Examples:
countAttrs (name: value: value) { d = true; f = true; a = false; }
=> 2
countAttrs (name: value: value.enable) { d = { enable = true; }; f = { enable = false; package = [ ]; }; }
=> 1
*/
countAttrs = pred: attrs:
lib.count (attr: pred attr.name attr.value)
(lib.mapAttrsToList lib.nameValuePair attrs);
/* Returns the file path of the given config of the given environment.
Type: getConfig :: String -> String -> Path
Example:
getConfig "home-manager" "foo-dogsquared"
=> ../configs/home-manager/foo-dogsquared
*/
getConfig = type: config: ../configs/${type}/${config};
/* Returns the file path of the given user subpart of the given
environment. Only certain environments such as NixOS have this type of
setup.
Type: getConfig :: String -> String -> Path
Example:
getUser "nixos" "foo-dogsquared"
=> ../configs/nixos/_users/foo-dogsquared
*/
getUser = type: user: ../configs/${type}/_users/${user};
}