core/pkgs/build-support/fetchbzr/default.nix

{ stdenvNoCC, breezy }:
{
  url,
  rev,
  sha256,
}:

stdenvNoCC.mkDerivation {
  name = "bzr-export";

  builder = ./builder.sh;
  nativeBuildInputs = [ breezy ];

  outputHashAlgo = "sha256";
  outputHashMode = "recursive";
  outputHash = sha256;

  inherit url rev;
}