Kdenlive

Fix for crashing on GNOME

As of NixOS 26.05, there is an issue with Kdenlive (version 26.04 as of time of writing) while running under GNOME, where Kdenlive will crash whenever a filepicker dialog is supposed to be opened along the lines of "Settings schema 'org.gtk.Settings.FileChooser' is not installed."

This has been reported on Github, with no fix at time of writing this article. However, you can work around this crash by using a nixpkgs overlay.

To work around this issue, add/append the following to you Nix/NixOS configuration file accordingly:

# kdenlive-fix.nix
{
  config,
  lib,
  pkgs,
  ...
}:

{
  config = lib.mkMerge [
    # fix for Kdenlive crash under GNOME
    # ## https://github.com/NixOS/nixpkgs/issues/469503
    {
      nixpkgs.overlays = [
        (final: prev: {
          kdePackages = prev.kdePackages.overrideScope (
            kfinal: kprev: {
              kdenlive = prev.symlinkJoin {
                inherit (kprev.kdenlive)
                  pname
                  version
                  meta
                  passthru
                  ;
                name = "kdenlive-crashfix";
                paths = [ kprev.kdenlive ];
                nativeBuildInputs = [ prev.makeWrapper ];
                postBuild = ''
                  wrapProgram $out/bin/kdenlive \
                    --prefix XDG_DATA_DIRS : "${prev.gtk3}/share/gsettings-schemas/${prev.gtk3.name}"
                '';
              };
            }
          );
        })
      ];
     }
   ];
}