--with-system-cppy=force \
--with-system-curl=force \
--with-system-cycler=force \
+ --with-system-cypari2=force \
+ --with-system-cysignals=force \
--with-system-cython=force \
--with-system-dateutil=force \
--with-system-debugpy=force \
--with-system-flit_core=force \
--with-system-fonttools=force \
--with-system-fplll=force \
+ --with-system-fpylll=force \
--with-system-gast=force \
--with-system-gc=force \
--with-system-gcc=force \