sketch.nix

let
  defaultRustChannel = target: pkgs.rustChannelOf {
    rustToolchain = ./rust-toolchain;
    targets = [ target ];
    extensions = [ "rust-std" ];
    targetExtensions = [ "rust-std" ];
  };

  binary =
    { rustTarget
    , features ? configurations.${rustTarget}.features
    , linking ? "dynamic"
    , rustChannel ? defaultRustChannel rustTarget
    , hostPkgs ? pkgs
    , targetPkgs ? hostPkgs
    , buildType ? "debug"
    , logLevel ? "debug"
    , runCheckPhase ? true
    }:
    let
      defintion = import ./scripts/environment/definition.nix {
        inherit tools hostPkgs targetPkgs rustTarget;
      };

      /* other code here */

      rustPlatform = targetPkgs.makeRustPlatform {
        inherit (rustChannel) cargo rustc;
      };
    in
    rustPlatform.buildRustPackage packageDefinition;
in
/* other code here */