The new graphics/py-matplotlib fails to build now in pkg_comp's chroot
now due to:

(cd /pkg_comp/obj/pkgsrc/graphics/py-matplotlib/default/matplotlib-0.80/ && /usr/bin/env USETOOLS=no PTHREAD_CFLAGS=\ -pthread\  PTHREAD_LDFLAGS=\ -pthread PTHREAD_LIBS= PTHREADBASE=/usr DL_CFLAGS=" -pthread " DL_LDFLAGS=" -pthread" DL_LIBS="" CC=cc CFLAGS=-O2\ -I/usr/pkg/include\ -I/usr/pkg/include/python2.4\ -I/usr/include\ -I/usr/pkg/include/freetype2\ -I/usr/X11R6/include CPPFLAGS=-I/usr/pkg/include\ -I/usr/pkg/include/python2.4\ -I/usr/include\ -I/usr/pkg/include/freetype2\ -I/usr/X11R6/include CXX=c++ CXXFLAGS=-O2\ -I/usr/pkg/include\ -I/usr/pkg/include/python2.4\ -I/usr/include\ -I/usr/pkg/include/freetype2\ -I/usr/X11R6/include COMPILER_RPATH_FLAG=-Wl,-R F77=f77 FC=f77 FFLAGS=-O LANG=C LC_COLLATE=C LC_CTYPE=C LC_MESSAGES=C LC_MONETARY=C LC_NUMERIC=C LC_TIME=C LDFLAGS=-L/usr/pkg/lib\ -L/usr/pkg/lib/python2.4/config\ -Wl,-R/usr/pkg/lib/python2.4/config\ -Wl,-R/usr/pkg/lib\
-L/usr/lib\ -Wl,-R/usr/lib\ -L/usr/X11R6/lib\ -Wl,-R/usr/X11R6/lib LINKER_RPATH_FLAG=-R PREFIX=/usr/pkg PKG_SYSCONFDIR=/usr/pkg/etc CPP=cpp LINK_ALL_LIBGCC_HACK= LOCALBASE=/usr/pkg NO_WHOLE_ARCHIVE_FLAG=-Wl,--no-whole-archive WHOLE_ARCHIVE_FLAG=-Wl,--whole-archive X11BASE=/usr/X11R6 X11PREFIX=/usr/pkg MAKECONF=/dev/null OBJECT_FMT=ELF USETOOLS=no BSD_INSTALL_PROGRAM=/usr/bin/install\ -c\ -s\ -o\ root\ -g\ wheel\ -m\ 555
BSD_INSTALL_SCRIPT=/usr/bin/install\ -c\ -o\ root\ -g\ wheel\ -m\ 555                   BSD_INSTALL_LIB=/usr/bin/install\ -c\ -o\ root\ -g\ wheel\ -m\ 555                      BSD_INSTALL_DATA=/usr/bin/install\ -c\ -o\ root\ -g\ wheel\ -m\ 444                     BSD_INSTALL_MAN=/usr/bin/install\ -c\ -o\ root\ -g\ wheel\ -m\ 444                      BSD_INSTALL=/usr/bin/install                            BSD_INSTALL_PROGRAM_DIR=/usr/bin/install\ -d\ -o\ root\ -g\ wheel\ -m\ 755      BSD_INSTALL_SCRIPT_DIR=/usr/bin/install\ -d\ -o\ root\ -g\ wheel\ -m\ 755               BSD_INSTALL_LIB_DIR=/usr/bin/install\ -d\ -o\ root\ -g\ wheel\ -m\ 755          BSD_INSTALL_DATA_DIR=/usr/bin/install\ -d\ -o\ root\ -g\ wheel\ -m\ 755                 BSD_INSTALL_MAN_DIR=/usr/bin/install\ -d\ -o\ root\ -g\ wheel\ -m\ 755          BSD_INSTALL_GAME=/usr/bin/install\ -c\ -s\ -o\ root\ -g\ wheel\ -m\ 555
BSD_INSTALL_GAME_DATA=/usr/bin/install\ -c\ -o\ root\ -g\ wheel\ -m\ 444 INSTALL_INFO=/pkg_comp/obj/pkgsrc/graphics/py-matplotlib/default/.tools/bin/install-info MAKEINFO=/pkg_comp/obj/pkgsrc/graphics/py-matplotlib/default/.tools/bin/makeinfo WRAPPER_DEBUG="yes" WRAPPER_UPDATE_CACHE="yes" VIEWBASE=/usr/pkg /usr/pkg/bin/python2.4  setup.py build )
X11 connection rejected because of wrong authentication.
The application 'setup.py' lost its connection to the display localhost:11.0;
most likely the X server was shut down or you killed/destroyed
the application.
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/graphics/py-matplotlib

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How are these issues normally dealt with?