#
# This module links fish vendor completions, otherwise tab completion would be broken.
#
{
  config,
  lib,
  ...
}:
let
  fishNixOSEnabled = config.programs.fish.enable;
  fishHMEnabled =
    if config ? home-manager then
      lib.any (userConfig: userConfig.programs.fish.enable) (lib.attrValues config.home-manager.users)
    else
      false;

  fishEnabled = fishNixOSEnabled || fishHMEnabled;
in
{
  environment.pathsToLink = lib.mkIf fishEnabled [
    "/share/fish/vendor_conf.d"
    "/share/fish/vendor_completions.d"
    "/share/fish/vendor_functions.d"
  ];
}