GNU bug report logs - #46967
Connection reuse for substitutes breaks with gzip

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From: Ludovic Courtès <ludo <at> gnu.org>
To: 46967 <at> debbugs.gnu.org
Subject: bug#46967: Connection reuse for substitutes breaks with gzip
Date: Fri, 12 Mar 2021 11:42:01 +0100

Hi!

Ludovic Courtès <ludo <at> gnu.org> skribis:

> This is because with ‘filtered-port’, the input port is dumped from a
> child process, not from the calling process.

I decided to take a heavy-handed solution to that problem, which is to
augment Guile-zlib with an interface for gzip compression/decompression
not restricted to file ports (‘call-with-gzip-output-port’ & co. are
restricted to file ports):

  https://notabug.org/guile-zlib/guile-zlib/commit/b899ac2fecf91475da1eba7e7b24708ea8b5fb73

That way, we can change ‘decompressed-port’ in (guix utils) to perform
in-process decompression for ‘gzip’, like it does for zstd and lzip.

If everything goes well, I’ll cut a Guile-zlib release today and update
Guix accordingly.

Ludo’.

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