Pandas-0.24.2 seems to behave differently if it is built with MAKEOPTS=-j1. If it is built without MAKEOPTS=-j1, tests on dev-python/spyder fail: ============================================ ERRORS ============================================ __________________ ERROR collecting spyder_kernels/utils/tests/test_nsview.py __________________ spyder_kernels/utils/tests/test_nsview.py:18: in <module> import pandas as pd /usr/lib64/python3.6/site-packages/pandas/__init__.py:26: in <module> from pandas._libs import (hashtable as _hashtable, /usr/lib64/python3.6/site-packages/pandas/_libs/__init__.py:4: in <module> from .tslibs import ( /usr/lib64/python3.6/site-packages/pandas/_libs/tslibs/__init__.py:4: in <module> from .conversion import normalize_date, localize_pydatetime, tz_convert_single pandas/_libs/tslibs/conversion.pyx:234: in init pandas._libs.tslibs.conversion ??? E AttributeError: type object 'pandas._libs.tslibs.conversion._TSObject' has no attribute '__reduce_cython__' !!!!!!!!!!!!!!!!!!!!!!!!!!! Interrupted: 1 errors during collection !!!!!!!!!!!!!!!!!!!!!!!!!!!! It works just fine if pandas is built with MAKEOPTS=j1
Created attachment 614246 [details] buildlog without MAKEOPTS=j1
Created attachment 614248 [details] emerge --inof
*** Bug 710062 has been marked as a duplicate of this bug. ***
Created attachment 614254 [details] buildlog with MAKEOPTS=j1
can you retry with 1.0.4?
(In reply to Pacho Ramos from comment #5) > can you retry with 1.0.4? Tests on spyder seem to pass just fine now with pandas-1.0.4 (without MAKEOPTS=-j1) 791 passed, 96 skipped, 3 xfailed, 68 warnings in 136.97s (0:02:16)