Thunar
Thunar is a GTK file manager originally made for Xfce.
Installation
With Xfce
If you enabled Xfce, Thunar should already be installed.
You can add plugins with services.xserver.desktopManager.xfce.thunarPlugins in your /etc/nixos/configuration.nix, for example:
services.xserver.desktopManager.xfce.thunarPlugins = with pkgs; [ xfce.thunar-volman xfce.thunar-archive-plugin ];
Standalone
If instead you want to install Thunar standalone, add to your /etc/nixos/configuration.nix:
environment.systemPackages = with pkgs; [
xfce.thunar
# Optionals
xfce.xfconf # Needed to save the preferences
xfce.exo # Used by default for `open terminal here`, but can be changed
];
services.gvfs.enable = true; # Mount, trash, and other functionalities
services.tumbler.enable = true; # Thumbnail support for images
You can add plugins by overriding thunarPlugins. For example, replace xfce.thunar from above with:
(xfce.thunar.override { thunarPlugins = with pkgs; [ xfce.thunar-volman xfce.thunar-archive-plugin ]; })
Thumbnails
You can extend tumbler's functionality to other file formats by adding more packages to environment.systemPackages. See here for a list (the names may not match 1:1).