anchor.diff:    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/*
  +    sed -e '/FS_STORE_ROOT/d' -i src/utilities/Makefile*
     '' ["minInit" "doUnpack"];
   
     fixInterpreter = (a.doPatchShebangs "$out/bin");
  
positive.code:       linux;
    };
  }) x
  
  
negative.code:   glib, libxml2, pcre, avahi,
    readline, ncurses, expat,
    zlib, pkgconfig, which,
    perl, libuuid, gmp, mpfr
    , db_dir ? "/var/lib/4store"
    , ...}:
  builderDefsPackage
  (a :  
  