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home-manager/modules/programs/feh.nix
Emily 9f9e277b60 treewide: remove now-redundant lib.mdDoc calls
These (and the `*MD` functions apart from `literalMD`) are now no-ops
in nixpkgs and serve no purpose other than to add additional noise and
potentially mislead people into thinking unmarked DocBook documentation
will still be accepted.

Note that if backporting changes including documentation to 23.05,
the `mdDoc` calls will need to be re-added.

To reproduce this commit, run:

    $ NIX_PATH=nixpkgs=flake:nixpkgs/e7e69199f0372364a6106a1e735f68604f4c5a25 \
      nix shell nixpkgs#coreutils \
      -c find . -name '*.nix' \
      -exec nix run -- github:emilazy/nix-doc-munge/98dadf1f77351c2ba5dcb709a2a171d655f15099 \
      --strip {} +
    $ ./format
2023-07-17 18:49:09 +01:00

83 lines
2.3 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.feh;
bindingsOf = t: with types; attrsOf (nullOr (either t (listOf t)));
renderBindings = bindings:
let
enabled = filterAttrs (n: v: v != null) bindings;
disabled = filterAttrs (n: v: v == null) bindings;
render = mapAttrsToList renderBinding;
in concatStringsSep "\n" (render disabled ++ render enabled);
renderBinding = func: key:
if key == null then
func
else if isList key then
concatStringsSep " " ([ func ] ++ map toString key)
else
"${func} ${toString key}";
in {
options.programs.feh = {
enable = mkEnableOption "feh - a fast and light image viewer";
package = mkPackageOption pkgs "feh" { };
buttons = mkOption {
default = { };
type = with types; bindingsOf (either str int);
example = {
zoom_in = 4;
zoom_out = "C-4";
prev_img = [ 3 "C-3" ];
};
description = ''
Override feh's default mouse button mapping. If you want to disable an
action, set its value to null. If you want to bind multiple buttons to
an action, set its value to a list.
See <https://man.finalrewind.org/1/feh/#x425554544f4e53> for
default bindings and available commands.
'';
};
keybindings = mkOption {
default = { };
type = bindingsOf types.str;
example = {
zoom_in = "plus";
zoom_out = "minus";
prev_img = [ "h" "Left" ];
};
description = ''
Override feh's default keybindings. If you want to disable a keybinding
set its value to null. If you want to bind multiple keys to an action,
set its value to a list.
See <https://man.finalrewind.org/1/feh/#x4b455953> for
default bindings and available commands.
'';
};
};
config = mkIf cfg.enable {
assertions = [{
assertion = ((filterAttrs (n: v: v == "") cfg.keybindings) == { });
message =
"To disable a keybinding, use `null` instead of an empty string.";
}];
home.packages = [ cfg.package ];
xdg.configFile."feh/buttons" =
mkIf (cfg.buttons != { }) { text = renderBindings cfg.buttons + "\n"; };
xdg.configFile."feh/keys" = mkIf (cfg.keybindings != { }) {
text = renderBindings cfg.keybindings + "\n";
};
};
}