anchor.diff: -{ fetchurl, stdenv, bash, emacs, gdb, glib, gmime, gnupg1,
  +{ fetchurl, stdenv, bash, emacs, gdb, glib, gmime, gnupg,
     pkgconfig, talloc, xapian
   }:
   
  
positive.code:       substituteInPlace "$prg" \
          --replace "#!/usr/bin/env bash" "#!${bash}/bin/bash"
      done)
    '';
  
    # XXX: emacs tests broken
  
negative.code:     sha256 = "03cwylm0y9xld0hn753v0hn62f96nagdmzxv8jlz8vdbh9iszs56";
    };
  
    buildInputs = [ bash emacs gdb glib gmime gnupg pkgconfig talloc xapian ];
  
    patchPhase = ''
      (cd test && for prg in \
  