anchor.diff:      make;
     '';
   
  +  # manually copy tcc and include files.. see comment above
     installPhase = ''
  -    ensureDir $out{,/sbin}
  +    ensureDir $out{,/sbin,/lib/tcng/include}
       make DESTDIR=$out install
       cp tcc/tcc $out/sbin
  +    cp tcc/*.tc $out/lib/tcng/include
     '';
   
     buildInputs =(with args; [bison flex db4 perl]);
  
positive.code:     IPROUTESRC=$(echo iproute*)
      for script in $(find . -type f); do sed -e 's@#![ ]*/bin/bash@#! /bin/sh@' -i $script; done
      find . -type f | xargs sed -i 's@/usr/bin/perl@${perl}/bin/perl@g'
    '';
  
  
    # gentoo ebulid says tcsim doesn't compile with 2.6 headers..
    # DATADIR can stillb e overridden by env TOPDIR=...
    configurePhase=''
      cat >> config << EOF
      YACC="yacc"
      DATA_DIR="/tmp/tcng/where_is_this_used"
      EOF
      ./configure \
      --kernel ${kernel}/lib/modules/2.6.28.6-default/build \
  
negative.code: 
  # tcc can even compile kernel modules for speed reason.
  # that would be a nice use case to test!
  
  # something is still wrong. The output can't be pasred sometimes
  # Eg it contains continue/pass,drop/pass, drop/drop. I've replaced
  # them by ok, drop, drop using sed. I'm not sure wether this is the correct way
  # Man pages are missing as well. So use the link at the bottom
  
  let version = "10b"; in
  
  