anchor.diff:    glib, libxml2, pcre, avahi,
     readline, ncurses, expat,
     zlib, pkgconfig, which,
  -  perl,
  -  db_dir ? "/var/lib/4store"
  +  perl, libuuid, gmp, mpfr
  +  , db_dir ? "/var/lib/4store"
     , ...}:
   builderDefsPackage
   (a :  
  
positive.code:   doFixConfigure = a.fullDepEntry ''
      sed -e 's@#! */bin/bash@#! ${a.stdenv.shell}@' -i configure
      find . -name Makefile -exec sed -e "s@/usr/local@$out@g" -i '{}' ';'
      sed -e '/\/var\/lib\/4store/d' -i src/utilities/Makefile
      
      sed -e 's@/var/lib/4store@${db_dir}@g' -i src/common/params.h src/utilities/*
    '' ["minInit" "doUnpack"];
  
    fixInterpreter = (a.doPatchShebangs "$out/bin");
  
negative.code:       linux;
    };
  }) x
  