Message 313312 - Python tracker

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In-reply-to
Author	Will Thompson
Recipients	Alexandru Ardelean, Ray Donnelly, Will Thompson, barry, benjamin.peterson, bmwiedemann, brett.cannon, dstufft, eric.araujo, eric.smith, eschwartz, vstinner
Date	2018年03月06日.09:34:52
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1520328893.06.0.467229070634.issue29708@psf.upfronthosting.co.za>

Content
For what it's worth, in Endless OS we still saw slight variations between builds in the .pyc files, even with all the source files' mtimes set to the epoch (ie. equivalent to setting & supporting SOURCE_DATE_EPOCH, I believe). Looking at the contents of the file suggested it was just reordering of class fields; indeed, we only saw this on Python versions where hash randomization is enabled by default, and disabling hash randomization made the output reproducible.

Content

For what it's worth, in Endless OS we still saw slight variations between builds in the .pyc files, even with all the source files' mtimes set to the epoch (ie. equivalent to setting & supporting SOURCE_DATE_EPOCH, I believe). Looking at the contents of the file suggested it was just reordering of class fields; indeed, we only saw this on Python versions where hash randomization is enabled by default, and disabling hash randomization made the output reproducible.

History
Date	User	Action	Args
2018年03月06日 09:34:53	Will Thompson	set	recipients: + Will Thompson, barry, brett.cannon, vstinner, eric.smith, benjamin.peterson, eric.araujo, dstufft, bmwiedemann, Alexandru Ardelean, Ray Donnelly, eschwartz
2018年03月06日 09:34:53	Will Thompson	set	messageid: <1520328893.06.0.467229070634.issue29708@psf.upfronthosting.co.za>
2018年03月06日 09:34:53	Will Thompson	link	issue29708 messages
2018年03月06日 09:34:52	Will Thompson	create

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