Ranger

From NixOS Wiki

Ranger is a command line file manager with a minimalistic vim-inspired interface.

Enabling

To use ranger, add it to configuration.nix:

/etc/nixos/configuration.nix
environment.systemPackages = with pkgs; [
    #----=[ File Manager ]=----#
    ranger
    ...
];

Adds file glyphs / icon support to Ranger

Follow the instructions in: ranger_devicons But before install it, you have to install a nerdfont derivations. i suggest to install: nur.repos.mic92.source-code-pro-nerdfonts from NUR.