{
    nixPkgsVersion ? "f606c027310f06df398875960e04038db1f0129f", # release 23.0 # "3e52e76b70d5508f3cec70b882a29199f4d1ee85",  # unstable
    currentSystem
}:
let

    getNixPkgs = args: import (builtins.fetchGit {
        name = "nixpkg-serene-${nixPkgsVersion}";
        url = "https://github.com/nixos/nixpkgs/";
        # `git ls-remote https://github.com/nixos/nixpkgs nixos-unstable`
        ref = "refs/heads/release-23.05"; # refs/heads/nixos-unstable
        rev = nixPkgsVersion;
    }) args;

    nixpkgs = getNixPkgs { system = currentSystem; };
    system = import ./system.nix {
        pkgs = nixpkgs;
        inherit currentSystem;
    };
    # staticMuslPkgs = getNixPkgs system;
    # llvm = staticMuslPkgs.llvmPackages_16.override { stdenv = staticMuslPkgs.llvmPackages_16.libcxxStdenv; };

    replaceStdenv = { pkgs }:
        let
            llvm = pkgs.llvmPackages_16.override { stdenv = pkgs.llvmPackages_16.libcxxStdenv; };
        in
          llvm.libcxxStdenv;

    createPkgSet = _:
        getNixPkgs (system // { config = { inherit replaceStdenv; }; });

in {
    inherit createPkgSet;
}