{
  pkgs ? import <nixpkgs> { },
}:
pkgs.callPackage (
  {
    mkShell,
    stdenv,
    pkgs,
  }:
  mkShell {
    strictDeps = true;
    # host/target agnostic programs
    depsBuildBuild = [
      pkgs.picotool
      pkgs.rustfmt
      pkgs.rust-analyzer
    ];
    # compilers & linkers & dependecy finding programs
    nativeBuildInputs = [
      pkgs.rustup
    ];
    # libraries
    buildInputs = [

    ];
    shellHook = ''
      export PATH="''${CARGO_HOME:-~/.cargo}/bin":"$PATH"
      export PATH="''${RUSTUP_HOME:-~/.rustup}/toolchains/$RUSTC_VERSION-${stdenv.hostPlatform.rust.rustcTarget}/bin":"$PATH"
    '';
  }
) { }