cmake-gui doesn't launch.

[ishan9299]

Describe the bug
cmake-gui doesn't launch it shows an error like:-

qt.qpa.plugin: Could not find the Qt platform plugin "xcb" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

fish: “cmake-gui” terminated by signal SIGABRT (Abort)

Notify maintainers

@r-ryantm
@vcunat

Metadata
Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

  /nix/store/3h27w2frml5vyim2sgadgc6z3bas19gv-nix-info
copying path '/nix/store/3h27w2frml5vyim2sgadgc6z3bas19gv-nix-info' from 'https://cache.nixos.org'...
 - system: `"x86_64-linux"`
 - host os: `Linux 5.10.14, NixOS, 21.03.20210209.50d3401 (Okapi)`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.4pre20201205_a5d85d0`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`

Maintainer information:

# a list of nixpkgs attributes affected by the problem
- cmake
- cmakeWithGui
attribute:
# a list of nixos modules affected by the problem
module:

[sikmir]

#54525