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nixpkgs/nixos/modules/services/x11/xfs.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

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Nix

{ config, lib, pkgs, ... }:
with lib;
let
configFile = ./xfs.conf;
in
{
###### interface
options = {
services.xfs = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable the X Font Server.";
};
};
};
###### implementation
config = mkIf config.services.xfs.enable {
assertions = singleton
{ assertion = config.fonts.enableFontDir;
message = "Please enable fonts.enableFontDir to use the X Font Server.";
};
jobs.xfs =
{ description = "X Font Server";
startOn = "started networking";
exec = "${pkgs.xorg.xfs}/bin/xfs -config ${configFile}";
};
};
}