Qt problems in flake on Ubuntu in WSL2

I have a flake which uses Qt and works like a charm on a number of machines running NixOS.

Someone tried to use it on Ubuntu in WSL2, and this error appears

qt.glx: qglx_findConfig: Failed to finding matching FBConfig for QSurfaceFormat

I am aware that OpenGL-dependent derivations on non-NixOS require a helping hand from NixGL so I tried the

nix run --override-input nixpkgs nixpkgs/nixos-21.11 --impure github:guibou/nixGL -- program

approach, which seems to have changed nothing.

Any ideas how to overcome this?