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Re: 'guix build' and garbage collection

From: Ludovic Courtès
Subject: Re: 'guix build' and garbage collection
Date: Fri, 07 Apr 2017 21:53:07 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux)

Chris Marusich <address@hidden> skribis:

> address@hidden (Ludovic Courtès) writes:
>> Hi!
>> Chris Marusich <address@hidden> skribis:
>>> Do you know why the intensional model hasn't been deployed in the 11
>>> years since the thesis was published?  To learn more, I can think of a
>>> few places to look (Nix email lists, other Nix-related research papers),
>>> but if you have specific recommendations, it would be helpful!
>> The intensional model (content-address item) works well if and only if
>> packages are 100% bit-reproducible, which they are not (yet!).
>> Also I’m not sure how substitutes could work with this model since one
>> cannot refer to the build result until it’s available.
> FYI, section 6.4.4 (p. 157) of Eelco's thesis describes how substitution
> works in the intensional model.  When performing substitution for a
> store path p, if a trusted substitute for p has been registered, then it
> is tried, and the substitution is considered successful if and only if
> the output's content-addressed store path equals p.

Oh indeed, thanks for the reminder!


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