nichts/modules/other/xdg.nix

{ pkgs, config, ... }:
let
    username = config.modules.other.system.username;
    hmCfg = config.home-manager.users.${username};

    primary_browser = "librewolf.desktop";
    mail_client = "thunderbird.desktop";
    file_manager = "pcmanfm.desktop";
    media_player = "mpv.desktop";
    image_viewer = "imv.desktop";
    text_editor = "nvim.desktop";
    terminal = "kitty.desktop";
in {

#    xdg.portal = {
#        enable = true;
#        extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
#        config.common.default = "gtk";
#    };
    environment.sessionVariables = {
        TERMINAL = "${terminal}";
    };
      
    home-manager.users.${username} = {
        xdg = {
#            cacheHome = "${hmCfg.home.homeDirectory}/.cache";
#            configHome = "${hmCfg.home.homeDirectory}/.config";
#            dataHome = "${hmCfg.home.homeDirectory}/.local/share";
#            stateHome = "${hmCfg.home.homeDirectory}/.local/state";
            mimeApps = {
                enable = true;
                defaultApplications = {
                    "text/html" = [ primary_browser ];
                    "x-scheme-handler/http" = [ primary_browser ];
                    "x-scheme-handler/https" = [ primary_browser ];
                    "x-scheme-handler/about" = [ primary_browser ];
                    "x-scheme-handler/unknown" = [ primary_browser ];
                    "x-scheme-handler/mailto" = [ mail_client ];
                    "message/rfc822" = [ mail_client ];
                    "x-scheme-handler/mid" = [ mail_client ];
                    "inode/directory" = [ file_manager ];
                    "audio/mp3" = [ media_player ];
                    "audio/ogg" = [ media_player ];
                    "audio/mpeg" = [ media_player ];
                    "audio/aac" = [ media_player ];
                    "audio/opus" = [ media_player ];
                    "audio/wav" = [ media_player ];
                    "audio/webm" = [ media_player ];
                    "audio/3gpp" = [ media_player ];
                    "audio/3gpp2" = [ media_player ];
                    "video/mp4" = [ media_player ];
                    "video/x-msvideo" = [ media_player ];
                    "video/mpeg" = [ media_player ];
                    "video/ogg" = [ media_player ];
                    "video/mp2t" = [ media_player ];
                    "video/webm" = [ media_player ];
                    "video/3gpp" = [ media_player ];
                    "video/3gpp2" = [ media_player ];
                    "image/png" = [ image_viewer ];
                    "image/jpeg" = [ image_viewer ];
                    "image/gif" = [ image_viewer ];
                    "image/avif" = [ image_viewer ];
                    "image/bmp" = [ image_viewer ];
                    "image/vnd.microsoft.icon" = [ image_viewer ];
                    "image/svg+xml" = [ image_viewer ];
                    "image/tiff" = [ image_viewer ];
                    "image/webp" = [ image_viewer ];
                    "text/plain" = [ text_editor ];
                };
            };
        };
    };
}