Cursor Themes

To install the DMZ white cursor theme with home-manager, add this to your home-manager config:

home.file.".icons/default".source = "${pkgs.vanilla-dmz}/share/icons/Vanilla-DMZ";

For a more fine-grained configuration, check the option xsession.pointerCursor.

Cursor Theme with Home Manager

Here's an example how you can get a cursor theme from a url and assign it to HM's pointerCursor:

  home.pointerCursor = 
    let 
      getFrom = url: hash: name: {
          gtk.enable = true;
          x11.enable = true;
          name = name;
          size = 48;
          package = 
            pkgs.runCommand "moveUp" {} ''
              mkdir -p $out/share/icons
              ln -s ${pkgs.fetchzip {
                url = url;
                hash = hash;
              }} $out/share/icons/${name}
          '';
        };
    in
      getFrom 
        "https://github.com/ful1e5/fuchsia-cursor/releases/download/v2.0.0/Fuchsia-Pop.tar.gz"
        "sha256-BvVE9qupMjw7JRqFUj1J0a4ys6kc9fOLBPx2bGaapTk="
        "Fuchsia-Pop";