anchor.diff:  { stdenv
   , fetchurl
   
  +, binutils
   , bzip2
   , cpio
   , db
  +, elfutils
   , file
   , libarchive
  -, libelf
   , nspr
   , nss
   , popt
  
positive.code:     # but we want 'python3.4m' here
      sed -i configure \
        -e 's/python''${PYTHON_VERSION}/${python.executable}/'
    '';
  
    configureFlags = [
  
negative.code:   };
  
    buildInputs = [
      binutils
      bzip2
      cpio
      db
      elfutils
      file
      libarchive
      nspr
      nss
      popt
  