mk_source_dir $SOURCE_DIRECTORY &&
cd $BUILD_DIRECTORY &&
verify_file '' &&
xz -dc $SOURCE_CACHE/$SOURCE | tar -xf -
cd $SOURCE_DIRECTORY  &&

if [ "$CALIBRE_PHOME" = "y" ]; then
   sed -i -e 's/\(--no-update-check.*\)False\(.*\)store_true/\1True\2store_false/g' src/calibre/gui2/main.py
fi

.