Kdenlive

Fix for crash while running under 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 file picker dialog is opened, logging an error message of "Settings schema 'org.gtk.Settings.FileChooser' is not installed".

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

To fix this crash, add the following to you configuration file:

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

{
  # 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}"
            '';
          };
        }
      );
    })
  ];
}