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authorLudovic Courtès <ludo@gnu.org>2019-11-06 22:02:34 +0100
committerLudovic Courtès <ludo@gnu.org>2019-11-07 18:39:55 +0100
commit665467767577172db40eea510583dbf2faf56a58 (patch)
tree3543bd9f5a152d6a92691ce86f5725d29b2684f2 /TODO
parent91d1955df90d7cb281e62c0924feef7b08eabca1 (diff)
downloadguix-665467767577172db40eea510583dbf2faf56a58.tar.gz
derivations: Use a regular hash table for the module cache.
The hit rate of the 'add-data-to-store' cache goes from 10% to 4% on:

  guix build -e '(@@ (gnu packages libreoffice) libreoffice)' -nd

* guix/derivations.scm (%module-cache): Turn into a regular hash table.
It didn't make sense to use a weak-value hash table given that values
are pairs.
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