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{ config, lib, pkgs, ... }: let
	cfg = config.programs._st;
	toString = x: if lib.isBool x then (if x then "true" else "false") else builtins.toString x;
	# http://freedesktop.org/software/fontconfig/fontconfig-user.html
	generateFontConfigString = name: attrs:
		name + lib.optionalString (attrs != {}) (
			":" + lib.concatStringsSep ":" (
				lib.mapAttrsToList (key: value: "${key}=${toString value}") attrs
			)
		)
	;
	themed-st = pkgs.stdenv.mkDerivation {
		name = "themed-st";
		dontUnpack = true;
		buildInputs = [ pkgs.makeWrapper ];
		installPhase = ''
			mkdir -p $out/bin
			makeWrapper ${pkgs.st}/bin/st $out/bin/st \
				--add-flags '-f"${generateFontConfigString cfg.font.name cfg.font.attrs}"'
		'';
	};
in {
	options.programs._st = {
		enable = lib.mkEnableOption "enables theming st with home manager";
		font = {
			name = lib.mkOption {
				type = lib.types.str;
				example = "JetBrainsMonoNL Nerd Font Mono";
				default = "monospace";
			};
			attrs = lib.mkOption {
				type = lib.types.attrs;
				default = {};
				example = {
					size = 12;
					antialias = true;
					autohint = true;
				};
			};
		};
	};

	config = lib.mkIf cfg.enable {
		home.packages = [ themed-st ];
	};
}