depends libxml2 &&
if is_depends_enabled libxml2 icu;then
  depends icu
fi &&

optional_depends python \
                 "--with-python" \
                 "--without-python" \
                 "to build python bindings for libxslt" &&

optional_depends libgcrypt \
                 "--with-crypto" \
                 "--without-crypto" \
                 "for exslt:crypto extension"

.