home-manager/modules/misc/xdg.nix
2017-10-31 12:26:39 +01:00

139 lines
3.4 KiB
Nix

{ options, config, lib, pkgs, ... }:
with lib;
let
cfg = config.xdg;
fileType = basePathDesc: basePath: (types.loaOf (types.submodule (
{ name, config, ... }: {
options = {
target = mkOption {
type = types.str;
apply = p: "${basePath}/${p}";
description = ''
Path to target file relative to <varname>${basePathDesc}</varname>.
'';
};
text = mkOption {
default = null;
type = types.nullOr types.lines;
description = "Text of the file.";
};
source = mkOption {
type = types.path;
description = ''
Path of the source file. The file name must not start
with a period since Nix will not allow such names in
the Nix store.
</para><para>
This may refer to a directory.
'';
};
executable = mkOption {
type = types.bool;
default = false;
description = "Whether the file should be executable.";
};
};
config = {
target = mkDefault name;
source = mkIf (config.text != null) (
let
file = pkgs.writeTextFile {
inherit (config) text executable;
name = "user-etc-" + baseNameOf name;
};
in
mkDefault file
);
};
}
)));
defaultCacheHome = "${config.home.homeDirectory}/.cache";
defaultConfigHome = "${config.home.homeDirectory}/.config";
defaultDataHome = "${config.home.homeDirectory}/.local/share";
getXdgDir = name: fallback:
let
value = builtins.getEnv name;
in
if value != "" then value else fallback;
in
{
options.xdg = {
enable = mkEnableOption "management of XDG base directories";
cacheHome = mkOption {
type = types.path;
defaultText = "~/.cache";
description = ''
Absolute path to directory holding application caches.
'';
};
configFile = mkOption {
type = fileType "xdg.configHome" cfg.configHome;
default = {};
description = ''
Attribute set of files to link into the user's XDG
configuration home.
'';
};
configHome = mkOption {
type = types.path;
defaultText = "~/.config";
description = ''
Absolute path to directory holding application configurations.
'';
};
dataHome = mkOption {
type = types.path;
defaultText = "~/.local/share";
description = ''
Absolute path to directory holding application data.
'';
};
};
config = mkMerge [
(mkIf cfg.enable {
xdg.cacheHome = mkDefault defaultCacheHome;
xdg.configHome = mkDefault defaultConfigHome;
xdg.dataHome = mkDefault defaultDataHome;
home.sessionVariables = {
XDG_CACHE_HOME = cfg.cacheHome;
XDG_CONFIG_HOME = cfg.configHome;
XDG_DATA_HOME = cfg.dataHome;
};
})
(mkIf (!cfg.enable) {
xdg.cacheHome = getXdgDir "XDG_CACHE_HOME" defaultCacheHome;
xdg.configHome = getXdgDir "XDG_CONFIG_HOME" defaultConfigHome;
xdg.dataHome = getXdgDir "XDG_DATA_HOME" defaultDataHome;
})
{
home.file =
let
f = n: v: {
inherit (v) source target;
mode = if v.executable then "777" else "444";
};
in mapAttrsToList f cfg.configFile;
}
];
}