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Make 'nix copy --from ssh://...' run in constant memory

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For instance, this reduced the memory consumption of

  $ nix copy --from ssh://localhost --to ~/my-nix /nix/store/1n7x0yv8vq6zi90hfmian84vdhd04bgp-blender-2.79a

from 632 MiB to 16 MiB.
This commit is contained in:
Eelco Dolstra 2018-03-21 22:56:02 +01:00
parent 92dfc22327
commit 47f7e5585b
4 changed files with 22 additions and 24 deletions
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3
src/libutil/archive.hh
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@ -74,6 +74,9 @@ void parseDump(ParseSink & sink, Source & source);
void restorePath(const Path & path, Source & source);
/* Read a NAR from 'source' and write it to 'sink'. */
void copyNAR(Source & source, Sink & sink);
// FIXME: global variables are bad m'kay.
extern bool useCaseHack;