adding tcng package

tcc can be used to generate tc traffic shaping commands.
It even can compile kernel modules to classify packages (untested)

svn path=/nixpkgs/trunk/; revision=14574

pkgs/tools/networking/tcng/default.nix

@@ -0,0 +1,76 @@
+args: with args;
+
+# tcc can even compile kernel modules for speed reason.
+# that would be a nice use case to test!
+
+let version = "10b"; in
+
+args.stdenv.mkDerivation {
+
+  name = "tcng-${version}";
+
+  src = fetchurl {
+    url = mirror://debian/pool/main/t/tcng/tcng_10b.orig.tar.gz;
+    sha256 = "1xjs0yn90rfa8ibxybg3gab1xzcjg60njymq2bd1b0a9i0arx7ji";
+  };
+
+  iproute2Src=iproute.src;
+
+  patches = [
+    (fetchurl {
+      url = mirror://debian/pool/main/t/tcng/tcng_10b-2.diff.gz;
+      sha256 = "17i4s2ffif0k4b78gfhkp08lvvharbfvyhwbd0vkwgpria0b9zrd";
+    })];
+  
+  # one mailinglist post says you should just add your kernel version to the list.. (?)
+  patchPhase = ''
+    unset patchPhase
+    patchPhase
+    unpackFile $iproute2Src
+    IPROUTESRC=$(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 \
+    --iproute2 $IPROUTESRC \
+    --install-directory $out \
+    --no-manual \
+    --with-tcsim
+  '';
+
+
+  # hacky, how to enable building tcc the correct way?
+  # adding shared and tcc to SUBDIRS and run make again isn't nice but works
+  buildPhase = ''
+    sed -i 's@^\(SUBDIRS.*\)@\1 shared tcc@' Makefile 
+    make;
+  '';
+
+  installPhase = ''
+    ensureDir $out{,/sbin}
+    make DESTDIR=$out install
+    cp tcc/tcc $out/sbin
+  '';
+
+  buildInputs =(with args; [bison flex db4 perl]);
+
+  meta = { 
+      description="tcng - Traffic Control Next Generation";
+      homepage = "http://tcng.sourceforge.net/";
+      license = "GPLv2";
+      longDescription = ''
+        useful links: http://linux-ip.net/articles/Traffic-Control-HOWTO,
+        http://blog.edseek.com/~jasonb/articles/traffic_shaping/
+      '';
+  };
+}

pkgs/top-level/all-packages.nix

@@ -1229,6 +1229,11 @@ let
     inherit fetchurl stdenv libpcap;
   };
 
+  tcng = import ../tools/networking/tcng {
+    inherit fetchurl stdenv iproute bison flex db4 perl;
+    kernel = kernel_2_6_28;
+  };
+
   telnet = import ../tools/networking/telnet {
     inherit fetchurl stdenv ncurses;
   };