Fvwm fails on standard configuration.nix


Previously on NixOS 20.09 I was using FVWM as my window manager with no issues:

services.xserver.windowManager.fvwm.enable = true;

Unfortunately after upgrading to 21.05 it fails to apply the new configuration.nix with the following error message:

building the system configuration...
error: anonymous function at /nix/store/yzvn580qp7ga3bxjm98zp4c91g031mvr-nixos-21.05.4384.4f37689c8a2/nixos/pkgs/applications/window-managers/fvwm/default.nix:1:1 called with unexpected argument 'gestures', at /nix/store/yzvn580qp7ga3bxjm98zp4c91g031mvr-nixos-21.05.4384.4f37689c8a2/nixos/lib/customisation.nix:69:16

as per the available options, I also unsuccessfully tried:

services.xserver.windowManager.fvwm.enable = true;
services.xserver.windowManager.fvwm.gestures = false;

although gestures set to false is the default value.



I upgraded to 21.11 and enabling fvwm worked as expected.

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