diff --git a/packages/numlib/scotch/6.0.0 b/packages/numlib/scotch/6.0.0
new file mode 100755
index 0000000..2e318ed
--- /dev/null
+++ b/packages/numlib/scotch/6.0.0
@@ -0,0 +1,95 @@
+#!/bin/sh
+# sit class file
+#
+# Christoph Niethammer <niethammer@hlrs.de> (C) 2012
+#
+
+CATEGORY="numlib"
+PACKAGE="scotch"
+VERSION="6.0.0"
+URL="http://www.labri.fr/perso/pelegrin/scotch/"
+INSTALLER="Elke Flehmig <flehmig@hlrs.de>"
+
+# Archive A and package name P
+A=${PACKAGE}_${VERSION}.tar.gz
+P=${PACKAGE}_${VERSION}/src
+
+BUILDDIR=$SRCDIR
+
+src_prepare() {
+case $PLATFORM in
+    hermit|hermit1)
+#       there are some GNU extensions Cray compiler doesn't (yet) know about
+        module swap PrgEnv-cray PrgEnv-gnu
+        echo "Building for hermit."
+#       link most fitting Makefile.inc sample:
+        cd $SRCDIR
+        ln -s Make.inc/Makefile.inc.x86-64_cray-xt4_linux2 Makefile.inc
+        echo "Linking Makefile.inc in $SRCDIR"
+#       adjust CFLAGS:
+#       remove not working options: -c99 -fast -fastsse
+#       add options: -DINTSIZE64 -DCOMMON_MEMORY_TRACE -DSCOTCH_METIS_PREFIX
+#       -DINTSIZE64 - set 64bit type width
+#       -DCOMMON_MEMORY_TRACE - enable monitoring of memory allocation
+#       -DSCOTCH_METIS_PREFIX - prefix scotch versions of metis files so as to avoid multiply defined symbol conflicts when using scotch and metis together
+
+        patch Makefile.inc < $SRC_POOL/6.0.0_Makefile.inc_patch_cray
+    ;;
+    laki|*)
+    echo "Building for laki."
+#       link most fitting Makefile.inc sample:
+        cd $SRCDIR
+        ln -s Make.inc/Makefile.inc.x86-64_pc_linux2 Makefile.inc
+        echo "Linking Makefile.inc in $SRCDIR"
+#       add options to CFLAGS:
+#       -DINTSIZE64 -DCOMMON_MEMORY_TRACE -DSCOTCH_METIS_PREFIX
+#       -DINTSIZE64 - set 64bit type width
+#       -DCOMMON_MEMORY_TRACE - enable monitoring of memory allocation
+#       -DSCOTCH_METIS_PREFIX - prefix scotch versions of metis files so as to avoid multiply defined symbol conflicts when using scotch and metis together
+#       set CCD to avoid compilation errors for ptscotch:
+#       CCD = mpicc
+        patch Makefile.inc < $SRC_POOL/6.0.0_Makefile.inc_patch_laki
+
+# check fails on cray (for now...)
+src_pretest() {
+#      add stdint.h to testfile to avoid failure
+       patch check/test_strat_seq.c < $SRC_POOL/6.0.0_test_strat_seq.c_patch_laki
+       sit_info "Checking scotch..."
+       make check || sit_fail "Checking scotch failed"
+#      ptcheck uses mpirun/requires qsub, which we will not process here
+#      may be done separately after installation...
+       # patch check/test_strat_par.c < $SRC_POOL/6.0.0_test_strat_par.c_patch_laki
+       # make ptcheck
+}
+
+    ;;
+esac
+
+# set installation target path for prefix:
+cd $SRCDIR
+sed -i -e "/^prefix.*\?= /s#/usr/local#$PREFIX#" Makefile
+}
+    
+sit_configure() {
+    sit_info "Configure not required"
+}
+
+src_build() {
+    sit_info "Building scotch..."
+    make scotch || sit_fail "Building scotch failed"
+    sit_info "Building ptscotch..."
+    make ptscotch || sit_fail "Building ptscotch failed"
+}
+
+src_install() {
+    mkdir -p $PREFIX
+    make install  || sit_fail "Installation failed"
+}
+
+src_postinst() {
+#   mv documentation to target (not included in make install)
+    cd ${WORKDIR}/${PACKAGE}_${VERSION}; mv doc $PREFIX
+
+    sit_info "NOTE: you may want to run 'make ptcheck' on laki, but this has to be done via qsub as it calls mpirun!"
+    sit_info "NOTE: try 'make check' and 'ptcheck' on cray, but some may fail or have to be run with mpirun...!"
+}
diff --git a/packages/numlib/scotch/6.0.0_Makefile.inc_patch_cray b/packages/numlib/scotch/6.0.0_Makefile.inc_patch_cray
new file mode 100644
index 0000000..993ed7d
--- /dev/null
+++ b/packages/numlib/scotch/6.0.0_Makefile.inc_patch_cray
@@ -0,0 +1,4 @@
+12c12
+< CFLAGS		= -O3 -c99 -fast -fastsse -DCOMMON_PTHREAD -DCOMMON_RANDOM_FIXED_SEED -DSCOTCH_PTHREAD -DSCOTCH_RENAME -DIDXSIZE64
+---
+> CFLAGS          = -O3 -std=gnu99 -DCOMMON_PTHREAD -DCOMMON_RANDOM_FIXED_SEED -DSCOTCH_PTHREAD -DSCOTCH_RENAME -DSCOTCH_RENAME_PARSER -DIDXSIZE64 -DINTSIZE64 -DCOMMON_MEMORY_TRACE -DSCOTCH_METIS_PREFIX
diff --git a/packages/numlib/scotch/6.0.0_Makefile.inc_patch_laki b/packages/numlib/scotch/6.0.0_Makefile.inc_patch_laki
new file mode 100644
index 0000000..00b263f
--- /dev/null
+++ b/packages/numlib/scotch/6.0.0_Makefile.inc_patch_laki
@@ -0,0 +1,6 @@
+11,12c11,12
+< CCD		= gcc
+< CFLAGS		= -O3 -DCOMMON_FILE_COMPRESS_GZ -DCOMMON_PTHREAD -DCOMMON_RANDOM_FIXED_SEED -DSCOTCH_RENAME -DSCOTCH_PTHREAD -Drestrict=__restrict -DIDXSIZE64
+---
+> CCD		= mpicc
+> CFLAGS		= -O3 -DCOMMON_FILE_COMPRESS_GZ -DCOMMON_PTHREAD -DCOMMON_RANDOM_FIXED_SEED -DSCOTCH_RENAME -DSCOTCH_PTHREAD -Drestrict=__restrict -DIDXSIZE64 -DINTSIZE64 -DCOMMON_MEMORY_TRACE -DSCOTCH_METIS_PREFIX
diff --git a/packages/numlib/scotch/6.0.0_test_strat_par.c_patch_laki b/packages/numlib/scotch/6.0.0_test_strat_par.c_patch_laki
new file mode 100644
index 0000000..136045f
--- /dev/null
+++ b/packages/numlib/scotch/6.0.0_test_strat_par.c_patch_laki
@@ -0,0 +1,2 @@
+55a56
+> #include <stdint.h>
diff --git a/packages/numlib/scotch/6.0.0_test_strat_seq.c_patch_laki b/packages/numlib/scotch/6.0.0_test_strat_seq.c_patch_laki
new file mode 100644
index 0000000..2403fb4
--- /dev/null
+++ b/packages/numlib/scotch/6.0.0_test_strat_seq.c_patch_laki
@@ -0,0 +1,2 @@
+54a55
+> #include <stdint.h>