anchor.diff:    src = fetchurl {
       urls = tarballUrls version;
       hashOutput = false;
  -    sha256 = "e8442566256e1be14e51fc18839cd799b966bc5b16c6a1d7a7c35155a8619d82";
  +    sha256 = "c18198ff6e8b05c620dbdd49b816a2e63a2688af843b5cf8e965041f1adcb515";
     };
   
     nativeBuildInputs = [
  
positive.code: }:
  
  let
    version = "2.0.14";
  
    tarballUrls = version: [
      "mirror://gnu/guile/guile-${version}.tar.xz"
  
negative.code: 
      # Hack to remove impurities
      # TODO: We should fix this so we have a cached version of this module
      rm "$out"/lib/guile/2.2/ccache/srfi/srfi-4/gnu.go
    '';
  
    # A native Guile 2.0 is needed to cross-build Guile.
  