cpp-devshell/flake.nix

{
  description = "A Nix-flake-based C/C++ development environment";

  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0"; # stable Nixpkgs

  outputs =
    { self, ... }@inputs:

    let
      supportedSystems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];
      forEachSupportedSystem =
        f:
        inputs.nixpkgs.lib.genAttrs supportedSystems (
          system:
          f {
            pkgs = import inputs.nixpkgs { inherit system; };
          }
        );
    in
    {
      devShells = forEachSupportedSystem (
        { pkgs }:
        {
          default =
            pkgs.mkShell.override
          
              {
                packages = with pkgs; [

                  clang-tools
                  gcc
                  gcc-arm-embedded
                  ninja
                  meson
                  pkg-config
                  libcxx
                ];
                shellHook = ''
                  		                echo "welcome to c++ devshell nyaaa :3"
                '';
                NIX_BUILD_SHELL = "zsh";
              };
        }
      );
    };
}