That's a mouthful for 14 lines of native development that can generate a dev container using https://devenv.sh

$ cat devenv.nix

{ pkgs, ... }: {

  languages.c.enable = true;

  packages = [ pkgs.ceedling pkgs.cmake ];

  enterShell = ''
    cmake --version
  '';

  pre-commit.hooks = { 
    clang-format.enable = true;
    clang-tidy.enable = true;
  };

}

$ devenv shell

(Note that pkgs.ceedling has been recently added and will only hit the cache in 6-12h).