Guide to installing qt theme

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Hey fellow Nix enthusiasts! :star2:

If you are venturing into the beautiful world of Nix and want to spruce up your Qt applications with a theme, here is a simple guide to get you started:

:wrench: System Configuration :wrench:

environment.systemPackages = with pkgs;
  [
    libsForQt5.qtstyleplugin-kvantum
    libsForQt5.qt5ct
];
nixpkgs.config.qt5 = {
  enable = true;
  platformTheme = "qt5ct"; 
    style = {
      package = pkgs.utterly-nord-plasma;
      name = "Utterly Nord Plasma";
    };
};

environment.variables.QT_QPA_PLATFORMTHEME = "qt5ct";

This snippet ensures your system knows about the qt6ct or qt5ct or Kvantum platform theme and qt6ct or qt5ct or Kvantum, a tool to apply stunning themes to Qt applications.

:house: Home Manager Configuration :house:

In your home.nix, you might want to fetch a fresh theme from the unstable channel and get access to theme directly :

  home-manager.users.varmisa = { pkgs, ... }: let
    unstablePkgs = import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/nixos-unstable.tar.gz") {
      config = config.nixpkgs.config;
    };
  in {
    home.packages = with pkgs; [unstablePkgs.utterly-nord-plasma];
    xdg.configFile = {
      "Kvantum/Utterly-Nord-Solid-Plasma/Utterly-Nord-Solid/Utterly-Nord-Solid.kvconfig".source = "${unstablePkgs.utterly-nord-plasma}/share/Kvantum/Utterly-Nord-Solid/Utterly-Nord-Solid.kvconfig";
      "Kvantum/Utterly-Nord-Solid-Plasma/Utterly-Nord-Solid/Utterly-Nord-Solid.svg".source = "${unstablePkgs.utterly-nord-plasma}/share/Kvantum/Utterly-Nord-Solid/Utterly-Nord-Solid.svg";
      "Kvantum/Utterly-Nord-Solid-Plasma/Utterly-Nord-Solid/Nord.patchconfig".source = "${unstablePkgs.utterly-nord-plasma}/share/Kvantum/Utterly-Nord-Solid/Nord.patchconfig";
      "Kvantum/kvantum.kvconfig".text = "[General]\ntheme=Utterly-Nord-Solid";
    };

:eye: What’s happening here? :eye:

We’re telling our home environment to use a cool theme called ‘Utterly Nord Plasma’. By pointing to the unstable channel, we get the latest goodies. We also directly tell our system where to find the theme’s configuration files.

:file_folder: Finding Theme Files :file_folder:

Not sure where your theme’s files are? Run this magic spell in your terminal :

nix-store -q --requisites /nix/store/*-package-name*

Replace package-name with the name of your theme package. This command will reveal all the paths related to your theme in the Nix store.

Hope this helps! Happy theming! :sparkles:

P.S. Quick note, friends! This guide assumes that you’re using a setup where Home Manager is integrated as part of your Nix system configuration. If you’re running Home Manager standalone, the steps will differ slightly. This setup is great for a cohesive environment where system and user configurations are harmoniously blended. :handshake: Happy configuring! :hammer_and_wrench::sparkles:

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