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kyle 2020-06-30 16:26:17 +00:00 • committed by admin
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[[!comment format=mdwn
username="kyle"
avatar="http://cdn.libravatar.org/avatar/7d6e85cde1422ad60607c87fa87c63f3"
subject="comment 3"
date="2020-06-30T16:26:17Z"
content="""
[ I don't have a good understanding of the build issues here. I'm
sorry if this isn't relevant. ]
> I found, the build becomes reproducible, when using a filesystem
> with deterministic readdir order such as disorderfs with sort mode.
This reminded me of an issue with Guix's git-annex build:
<https://debbugs.gnu.org/cgi/bugreport.cgi?bug=33922>. In that case,
the nondeterminism came from \"package database files that are
generated by ghc-pkg (where readdir is used and the result isn’t
sorted)\".
The fix on Guix's end, 5de93cdba7 (gnu: ghc-8: Patch ghc-pkg for
reproducibility, 2019-01-17), was at the level of the ghc package. It
replaced the following line in utils/ghc-pkg/Main.hs
```
confs = map (path </>) $ filter (\".conf\" `isSuffixOf`) fs
```
with
```
confs = map (path </>) $ filter (\".conf\" `isSuffixOf`) (sort fs)
```
"""]]