diff --git a/freecad-0.20-0.build.sh b/freecad-0.20-0.build.sh
new file mode 100755
index 0000000..e153677
--- /dev/null
+++ b/freecad-0.20-0.build.sh
@@ -0,0 +1,515 @@
+#! /bin/bash
+
+PKG=freecad
+VERSION=0.20
+VERSIONP=${VERSION/-/+} # just brilliant !
+BUILD=0
+
+NPROC=$(( $(nproc) * 4 / 5 + 1 ))
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+if [ -n "$TESTING" ]; then PREFIX=/dev/shm/$PKG-$VERSION-$BUILD ; fi
+
+#B_XERCES=1
+#B_OCCT=1
+#B_VTK=1
+#B_MED=1
+#B_QT5=1
+#B_PYTHON=1
+B_PYSIDE2=1
+#B_SIX=1
+#B_COIN=1
+B_QUARTER=1
+B_PIVY=1
+#B_BOOST=1
+B_FREECAD=1
+
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.$USER.build.tmp
+test -d $BUILD_TMPDIR && ( chmod -R u+rwx $BUILD_TMPDIR || true ; rm -rf $BUILD_TMPDIR )
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH:/usr/local/package/bin
+	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:}\$LD_LIBRARY_PATH ; fi
+EOF
+
+. $PREFIX/profile
+
+B=$PREFIX/build
+
+mkdir -p $B
+cd $B
+
+(( $B_XERCES )) && {
+#
+# Xerces
+#
+
+# https://dlcdn.apache.org//xerces/c/3/sources/xerces-c-3.2.3.tar.gz
+SRCURL="https://beehive.molgen.mpg.de/a5fa4d920fce31c9ca3bfef241644494/xerces-c-3.2.3.tar.gz"
+test -e xerces-c-3.2.3.tar.gz || wget -nv ${SRCURL}
+test -d xerces-c-3.2.3 || tar -xf xerces-c-3.2.3.tar.gz
+cd xerces-c-3.2.3
+
+CFLAGS="-O2 -fPIC" ./configure \
+  --prefix=$PREFIX
+
+make -j $NPROC
+make install
+cd $B
+}
+
+(( $B_OCCT )) && {
+#
+# OCCT
+#
+
+# https://dev.opencascade.org/system/files/occt/OCC_7.6.0_release/opencascade-7.6.0.tgz
+# git clone gitolite@git.dev.opencascade.org:occt occt
+SRCURL="https://beehive.molgen.mpg.de/e0faf187321d72d15c5bc438215e5605/occt-94748ad.tar.gz"
+test -e occt-94748ad.tar.gz || wget -nv ${SRCURL}
+test -d occt-94748ad || tar -xf occt-94748ad.tar.gz
+cd occt-94748ad
+
+mkdir build || true
+cd build
+cmake \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DCMAKE_PREFIX_PATH=$PREFIX \
+  -DCMAKE_BUILD_TYPE=Release \
+  ..
+
+make -j $NPROC
+make install
+cd $B
+}
+
+(( $B_VTK )) && {
+#
+# VTK
+#
+
+# https://www.vtk.org/files/release/9.1/VTK-9.1.0.tar.gz
+SRCURL="https://beehive.molgen.mpg.de/96508e51d7c3764cd5aba06fffd9864e/VTK-9.1.0.tar.gz"
+test -e VTK-9.1.0.tar.gz || wget -nv ${SRCURL}
+test -d VTK-9.1.0 || tar -xf VTK-9.1.0.tar.gz
+cd VTK-9.1.0
+mkdir build || true
+cd build
+cmake \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DCMAKE_PREFIX_PATH=$PREFIX \
+  -DCMAKE_BUILD_TYPE=Release \
+  ..
+
+make -j $NPROC
+make install
+cd $B
+}
+
+(( ${B_MED} )) && {
+#
+# libMED
+#
+
+# https://github.com/vejmarie/libMED/archive/refs/heads/master.zip
+SRCURL="https://beehive.molgen.mpg.de/b734f36c30f66b2f3e2f45ae3ae99fee/libMED-master.zip"
+test -e libMED-master.zip || wget -nv ${SRCURL}
+test -d libMED-master || unzip libMED-master.zip
+cd libMED-master
+mkdir build || true
+cd build
+cmake \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DCMAKE_PREFIX_PATH=$PREFIX \
+  -DCMAKE_BUILD_TYPE=Release \
+  ..
+
+make -j $NPROC
+make install
+cd $B
+}
+
+
+(( $B_QT5 )) && {
+
+#SRCURL="https://beehive.molgen.mpg.de/e1447db4f06c841d8947f0a6ce83a7b5/qt-everywhere-src-5.15.2.tar.xz"
+
+# https://download.qt.io/archive/qt/5.15/5.15.4/single/qt-everywhere-opensource-src-5.15.4.tar.xz
+SRCURL="https://beehive.molgen.mpg.de/5b6bba4f5f2749ed259e734a082e3b4e/qt-everywhere-opensource-src-5.15.4.tar.xz"
+
+PATCHURL[0]="https://beehive.molgen.mpg.de/3613046beccc11da5b3ce0ea07a9600e/qt-everywhere-opensource-src-5.15.4-kf5-1.patch"
+PATCHFILE[0]=${PATCHURL[0]##*/}
+
+PATCHURL[1]="https://beehive.molgen.mpg.de/0d17b8b6e93cb8c53c4027c0d0757e5c/qt5.15.4-webengine-glibc-2.33.patch"
+
+PATCHFILE[1]=${PATCHURL[1]##*/}
+
+test -e qt-everywhere-opensource-src-5.15.4.tar.xz || wget -nv ${SRCURL}
+test -d qt-everywhere-src-5.15.4 || tar xf qt-everywhere-opensource-src-5.15.4.tar.xz
+
+test -e ${PATCHFILE[0]} || wget -nv ${PATCHURL[0]}
+test -e ${PATCHFILE[1]} || wget -nv ${PATCHURL[1]}
+
+
+cd qt-everywhere-src-5.15.4
+
+patch -p1 -N < ${B}/${PATCHFILE[0]} || true
+
+cd qtwebengine
+patch -p1 -N < ${B}/${PATCHFILE[1]} || true
+cd ..
+
+sed -e '/webengine-system-libevent/ s/=true\s*$/=false/' -i qtwebengine/src/core/config/linux.pri
+
+./configure \
+        -prefix ${PREFIX}/qt5 \
+        -nomake examples \
+        -nomake tests \
+        -opensource \
+        -confirm-license \
+        -no-strip \
+        -no-pch \
+        -verbose \
+        -xcb \
+        -qpa xcb \
+        -opengl
+
+    make -j $NPROC
+    make install
+    cd $B
+}
+
+
+#
+# eigenes python ( muss noch nach oben )
+#
+
+PYTHONVERSION=3.9.7
+PYTHONVERMAIN=${PYTHONVERSION%.*}
+
+(( ${B_PYTHON} )) && {
+SRCURL=https://beehive.molgen.mpg.de/fddb060b483bc01850a3f412eea1d954/Python-3.9.7.tar.xz
+test -e Python-$PYTHONVERSION.tar.xz || wget -nv $SRCURL
+test -d Python-$PYTHONVERSION        || tar -xf Python-$PYTHONVERSION.tar.xz
+cd Python-$PYTHONVERSION
+
+LDFLAGS="-Wl,-rpath=$PREFIX/lib" \
+./configure \
+    --prefix=$PREFIX \
+    --enable-shared
+
+make -j $NPROC
+make install
+pip3 install --upgrade pip
+#pip3 install PySide2
+#pip3 install Cython
+#pip3 install lxml
+#pip3 install numpy
+#pip3 install scour
+#pip3 install serial
+#pip3 install pytest
+cd $B
+
+}
+
+#
+# PYSIDE2
+#
+(( ${B_PYSIDE2} )) && {
+# git clone https://code.qt.io/pyside/pyside-setup
+# cd pyside-setupg
+# git branch --track 5.12 origin/5.12
+# git checkout 5.12
+SRCURL="https://beehive.molgen.mpg.de/44781c5c3c25c7ec0b19c4730999e828/pyside-setup-5.15.2.1.tar"
+
+test -e pyside-setup-5.15.2.1.tar || wget -nv $SRCURL
+test -d pyside-setup || tar -xf pyside-setup-5.15.2.1.tar
+
+cd pyside-setup
+python3 setup.py install \
+  --qmake=${PREFIX}/qt5/bin/qmake \
+  --parallel=$NPROC \
+  --build-tests
+
+cd $B
+
+}
+
+
+#
+# SIX
+#
+(( ${B_SIX} )) && {
+# git clone https://github.com/benjaminp/six
+# cd six
+# git checkout 5.12
+
+SRCURL="https://beehive.molgen.mpg.de/edec07c9f1e6be600e3baa65a1d258b6/six-git-1.16.0.tar"
+
+test -e six-git-1.16.0.tar || wget -nv $SRCURL
+test -d six || tar -xf six-git-1.16.0.tar
+
+cd six
+python3 setup.py install
+
+cd $B
+}
+
+(( ${B_COIN} )) && {
+#
+# Coin3D
+#
+
+# https://github.com/coin3d/coin/releases/download/Coin-4.0.0/coin-4.0.0-src.tar.gz
+# SRCURL="https://beehive.molgen.mpg.de/2377d11b38c8eddd92d8bb240f5bf4ee/coin-4.0.0-src.tar.gz"
+
+# git clone --recurse-submodules https://github.com/coin3d/coin
+SRCURL="https://beehive.molgen.mpg.de/3dd594519dfb98d141d890e26da5715c/coin-git-37b973ac.tar"
+PKGARC=${SRCURL##*/}
+
+test -e ${PKGARC} || wget -nv $SRCURL
+test -d coin || tar -xf ${PKGARC}
+
+cmake \
+  -Hcoin \
+  -Bcoin_build \
+  -G "Unix Makefiles" \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCOIN_BUILD_DOCUMENTATION=OFF \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DBOOST_ROOT=$PREFIX
+
+
+cmake \
+  --build coin_build \
+  --target all \
+  --config Release \
+  -- -j${NPROC}
+
+cmake \
+  --build coin_build \
+  --target install \
+  --config Release \
+  -- -j${NPROC}
+
+chmod 755 ${PREFIX}/bin/coin-config
+
+cd $B
+}
+
+(( ${B_QUARTER} )) && {
+#
+# Quarter
+#
+
+
+# bee download https://github.com/coin3d/quarter.git
+SRCURL="https://beehive.molgen.mpg.de/1502531d13fd3d4b4ff849ccddde3115/quarter-builds_p46_6297049.tar.bz2"
+PKGARC=${SRCURL##*/}
+
+test -e ${PKGARC} || wget -nv $SRCURL
+test -d ${PKGARC%%.*} || tar -xf ${PKGARC}
+
+# cd ${PKGARC%%.*}
+
+# mkdir -pv soqt_build || true
+# sed -i -e '/^add_subdirectory(data)/ s/add/#add/;/^add_subdirectory(src)/ s/add/#add/' ${PKGARC%%.*}/CMakeLists.txt
+
+cmake \
+--trace-expand \
+  -H${PKGARC%%.*} \
+  -Bquarter_build \
+  -G "Unix Makefiles" \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_PREFIX_PATH=$PREFIX \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DSOQT_BUILD_DOCUMENTATION=OFF \
+  -DSOQT_BUILD_TESTS=OFF
+
+cd quarter_build
+make clean
+make -j${NPROC}
+make install
+
+cd $B
+}
+
+
+#
+# SOQT
+#
+(( ${B_SOQT_NONO} )) && {
+# bee download https://github.com/coin3d/soqt.git
+# cd  pivy-0.6.7_p3_3a344e1
+
+PKGARC=soqt-builds_p62_b607c58e.tar.bz2
+
+SRCURL="https://beehive.molgen.mpg.de/55e7fa71948c71cda76247a96c9bb953/${PKGARC}"
+
+test -e ${PKGARC} || wget -nv $SRCURL
+test -d ${PKGARC%%.*} || tar -xf ${PKGARC}
+
+cd ${PKGARC%%.*}
+
+mkdir -pv build || true
+
+cmake \
+  -H. -Bbuild \
+  -G "Unix Makefiles" \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_PREFIX_PATH=$PREFIX \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DSOQT_BUILD_DOCUMENTATION=OFF
+
+cmake \
+  --build build \
+  --target all \
+  --config Release \
+  -- -j${NPROC}
+
+cmake \
+  --build build \
+  --target install \
+  --config Release \
+  -- -j${NPROC}
+
+cd $B
+}
+
+
+
+#
+# PIVY
+#
+(( ${B_PIVY} )) && {
+# bee download https://github.com/coin3d/pivy.git
+# cd  pivy-0.6.7_p3_3a344e1
+
+SRCURL="https://beehive.molgen.mpg.de/6922534116c5feeeb735b05535c8e66b/pivy-0.6.7_p3_3a344e1.tar.bz2"
+
+test -e pivy-0.6.7_p3_3a344e1.tar.bz2 || wget -nv $SRCURL
+test -d pivy-0.6.7_p3_3a344e1 || tar -xf pivy-0.6.7_p3_3a344e1.tar.bz2
+
+cd pivy-0.6.7_p3_3a344e1
+# python3 setup.py install
+mkdir -pv build || true
+cd build
+cmake \
+  --trace-expand \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  ..
+
+cmake \
+  --build . \
+  --target all \
+  --config Release \
+  -- -j${NPROC}
+
+
+make
+make install
+
+cd $B
+}
+
+
+
+
+(( ${B_BOOST} )) && {
+#
+# boost_*
+#
+BOOSTVERSION=1.75.0
+BOOSTVERSION_USCORED=1_75_0
+PKGCFLAGS="-O2 -fPIC"
+
+SRCURL=https://beehive.molgen.mpg.de//38813f6feb40387dfe90160debd71251/boost_1_75_0.tar.gz
+
+test -e boost_$BOOSTVERSION_USCORED.tar.gz || wget -nv ${SRCURL}
+test -d boost_$BOOSTVERSION_USCORED || tar -xf boost_$BOOSTVERSION_USCORED.tar.gz
+cd boost_$BOOSTVERSION_USCORED
+
+# sed -e "/using python/ s|;|: ${PREFIX}/include/python${PYTHONVERMAIN} ;|" -i bootstrap.sh
+
+# aus freecad-source/cMake/FreeCAD_Helpers/SetupBoost.cmake :
+#        filesystem,program_options,regex,system,thread,date_time,pthread
+
+./bootstrap.sh \
+        --with-toolset=gcc \
+        --with-icu \
+        --with-python=$PREFIX/bin/python3 \
+        --with-python-root=$PREFIX \
+        --with-libraries=filesystem,program_options,regex,system,thread,date_time,python || exit 1
+
+./b2 \
+  -j $NPROC \
+        --layout=system \
+        --build-dir=build-python3 \
+        --prefix=$PREFIX \
+        --libdir=$PREFIX/lib \
+        --build-type=minimal \
+        toolset=gcc \
+        variant=release \
+        debug-symbols=off \
+        link=shared \
+        threading=multi \
+        runtime-link=shared \
+        python=$PYTHONVERMAIN \
+        cflags="$PKGCFLAGS" \
+        cxxflags="$PKGCFLAGS" \
+        install || exit 1
+
+cd $B
+}
+
+(( ${B_FREECAD} )) && {
+
+# test -d freecad-source || git clone https://github.com/FreeCAD/FreeCAD.git freecad-source
+SRCTAR=freecad-source-35919e2a-git.tar
+test -e ${SRCTAR} || wget "https://beehive.molgen.mpg.de/a8c1ac24d7827b170095e6d05ee0ec94/${SRCTAR}"
+test -d freecad-source || tar xf ${SRCTAR}
+
+mkdir freecad-build || true
+cd freecad-build
+
+cmake \
+--trace-expand \
+  -DCMAKE_INSTALL_PREFIX=$PREFIX \
+  -DCMAKE_VERBOSE_MAKEFILE=ON \
+  -DCMAKE_PREFIX_PATH="${PREFIX};${PREFIX}/qt5" \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_EXE_LINKER_FLAGS="-L${PREFIX}/lib" \
+  -DCMAKE_SHARED_LINKER_FLAGS="-L${PREFIX}/lib" \
+  -DCMAKE_INSTALL_RPATH="${PREFIX}/lib;${PREFIX}/qt5/lib" \
+  -DPySide2_DIR=$PREFIX \
+  -Wno-dev \
+  ../freecad-source
+
+make clean
+make -j $NPROC
+make install
+}
+
+cd $PREFIX/bin/
+cat >qt.conf<<_EOC_
+[Paths]
+Prefix = /pkg/freecad-0.20-0/qt5
+#Translations = i18n
+_EOC_
+
+cd $B