Noah D. Brenowitz ceeaf2d066 python3Packages.dask: fix sandboxed builds ... Importing dask.dataframe in a sandboxed build results in a TypeError like this: File "/nix/store/nv60iri29bia4szhhcvsdxgsci4wxvp6-python3.8-dask-2021.03.0/lib/python3.8/site-packages/dask/dataframe/io/csv.py", line 392, in <module> AUTO_BLOCKSIZE = auto_blocksize(TOTAL_MEM, CPU_COUNT) File "/nix/store/nv60iri29bia4szhhcvsdxgsci4wxvp6-python3.8-dask-2021.03.0/lib/python3.8/site-packages/dask/dataframe/io/csv.py", line 382, in auto_blocksize blocksize = int(total_memory // cpu_count / memory_factor) TypeError: unsupported operand type(s) for //: 'int' and 'NoneType' This occurs because dask.dataframe has a non-deterministic component which generates an automatic chunk-size based on system information. This went unnoticed because the dask tests were disabled. Changes: - add a patch making the chunk-size inference more robust - re-enable the tests Resolves #120307		2021-04-23 17:57:01 -07:00
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default.nix	python3Packages.dask: fix sandboxed builds	2021-04-23 17:57:01 -07:00