nixpkgs/nixos/modules/programs/yabar.nix

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{ lib, pkgs, config, ... }:
with lib;
let
cfg = config.programs.yabar;
mapExtra = v: lib.concatStringsSep "\n" (mapAttrsToList (
key: val: "${key} = ${if (isString val) then "\"${val}\"" else "${builtins.toString val}"};"
) v);
listKeys = r: concatStringsSep "," (map (n: "\"${n}\"") (attrNames r));
configFile = let
bars = mapAttrsToList (
name: cfg: ''
${name}: {
font: "${cfg.font}";
position: "${cfg.position}";
${mapExtra cfg.extra}
block-list: [${listKeys cfg.indicators}]
${concatStringsSep "\n" (mapAttrsToList (
name: cfg: ''
${name}: {
exec: "${cfg.exec}";
align: "${cfg.align}";
${mapExtra cfg.extra}
};
''
) cfg.indicators)}
};
''
) cfg.bars;
in pkgs.writeText "yabar.conf" ''
bar-list = [${listKeys cfg.bars}];
${concatStringsSep "\n" bars}
'';
in
{
options.programs.yabar = {
enable = mkEnableOption "yabar";
package = mkOption {
default = pkgs.yabar-unstable;
example = literalExample "pkgs.yabar";
type = types.package;
# `yabar-stable` segfaults under certain conditions.
apply = x: if x == pkgs.yabar-unstable then x else flip warn x ''
It's not recommended to use `yabar' with `programs.yabar', the (old) stable release
tends to segfault under certain circumstances:
* https://github.com/geommer/yabar/issues/86
* https://github.com/geommer/yabar/issues/68
* https://github.com/geommer/yabar/issues/143
Most of them don't occur on master anymore, until a new release is published, it's recommended
to use `yabar-unstable'.
'';
description = ''
The package which contains the `yabar` binary.
Nixpkgs provides the `yabar` and `yabar-unstable`
derivations since 18.03, so it's possible to choose.
'';
};
bars = mkOption {
default = {};
type = types.attrsOf(types.submodule {
options = {
font = mkOption {
default = "sans bold 9";
example = "Droid Sans, FontAwesome Bold 9";
type = types.str;
description = ''
The font that will be used to draw the status bar.
'';
};
position = mkOption {
default = "top";
example = "bottom";
type = types.enum [ "top" "bottom" ];
description = ''
The position where the bar will be rendered.
'';
};
extra = mkOption {
default = {};
type = types.attrsOf types.str;
description = ''
An attribute set which contains further attributes of a bar.
'';
};
indicators = mkOption {
default = {};
type = types.attrsOf(types.submodule {
options.exec = mkOption {
example = "YABAR_DATE";
type = types.str;
description = ''
The type of the indicator to be executed.
'';
};
options.align = mkOption {
default = "left";
example = "right";
type = types.enum [ "left" "center" "right" ];
description = ''
Whether to align the indicator at the left or right of the bar.
'';
};
options.extra = mkOption {
default = {};
type = types.attrsOf (types.either types.str types.int);
description = ''
An attribute set which contains further attributes of a indicator.
'';
};
});
description = ''
Indicators that should be rendered by yabar.
'';
};
};
});
description = ''
List of bars that should be rendered by yabar.
'';
};
};
config = mkIf cfg.enable {
systemd.user.services.yabar = {
description = "yabar service";
wantedBy = [ "graphical-session.target" ];
partOf = [ "graphical-session.target" ];
script = ''
${cfg.package}/bin/yabar -c ${configFile}
'';
serviceConfig.Restart = "always";
};
};
}