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{ config, lib, pkgs, ... }: let
cfg = config.xdg.mimeApps._defaultCategoryApplications;
# Mime-type category files are stored here
mimeResources = ./resources/xdg-mime;
# Files present in mimeResources with newline separated mime-types
# Would be more fun to load these dynamically with builtins.readDir, but I will be disciplined
categories = [ "audio" "email" "image" "pdf" "text" "video" ];
# Dynamically generate categories
categoryApplications = (lib.genAttrs categories (category: lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [ ];
description = "set the default application used for ${category} files. omit '.desktop'";
}));
# Create list of mime-types from the category file
getCategoryMimeTypes = category: lib.filter (s: s != "") (lib.splitString "\n" (builtins.readFile "${mimeResources}/${category}"));
# Structure default applications for a specified category how home-manager expects
assignMimeTypes = applications: category: lib.map (mimetype:
{ "${mimetype}" = lib.mkIf (applications != []) (lib.map (app: "${app}.desktop") applications); }
) (getCategoryMimeTypes category);
# Combine all category applications
defaultApplications = lib.mkMerge (lib.flatten (
lib.map (category: assignMimeTypes cfg.categoryApplications.${category} category) categories
));
in {
options.xdg.mimeApps._defaultCategoryApplications = {
enable = lib.mkEnableOption "set default applications as defined in the resources dir";
inherit categoryApplications;
};
config = lib.mkIf cfg.enable {
xdg.mimeApps = {
enable = lib.mkDefault true;
inherit defaultApplications;
};
};
}
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