dev-libs/libgweather-2.26.1 checks for python even if USE="-python" was given and thus fails if dev-python/pygobject isn't installed: checking for msgfmt... (cached) /usr/bin/msgfmt checking for dcgettext... yes checking if msgfmt accepts -c... yes checking for gmsgfmt... (cached) /usr/bin/gmsgfmt checking for xgettext... (cached) /usr/bin/xgettext checking for struct tm.tm_gmtoff... yes checking for _NL_MEASUREMENT_MEASUREMENT... yes checking for python... /usr/bin/python checking for python version... 2.6 checking for python platform... linux2 checking for python script directory... ${prefix}/lib64/python2.6/site-packages checking for python extension module directory... ${exec_prefix}/lib64/python2.6/site-packages checking for headers required to compile python extensions... found checking for PYGOBJECT... configure: error: Package requirements (pygobject-2.0) were not met: No package 'pygobject-2.0' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables PYGOBJECT_CFLAGS and PYGOBJECT_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. !!! ERROR in dev-libs/libgweather-2.26.1: !!! In econf at line 1303 !!! econf failed Reproducible: Always
emerge --info & config.log please, it builds just fine without python here. Did you run python-updater after python 2.6 upgrade ?