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Re: Package file indexing
From: |
Pierre Neidhardt |
Subject: |
Re: Package file indexing |
Date: |
Mon, 25 Mar 2019 09:46:40 +0100 |
Hi!
Thanks for the details, Ludo!
Ludovic Courtès <address@hidden> writes:
> An index could look like, say, a list of store item/file pairs. It
> would grow very quickly, which may not be very practical.
I think we might need some form of rotation and discard the old indexes
to avoid growing up indefinitely. Well, we will see once we've started
using it!
> ‘guix publish’ could update that list every time it “bakes” a nar.
>
> The daemon could have a special RPC: you give it a file name and it
> returns a store item (or package+version?) or #f.
I think you meant "store itemS" (plural), no?
> Internally it’d call ‘guix substitute’ to fetch the file index from
> the substitute server, check its signature, cache it locally, and then
> look up the file.
>
> You should look at how NixOS does it for its ‘command-not-found’ support
> (I think it’s part of NixOS, not Nix). IIRC they distribute an SQLite
> database, but it’s a pretty ad-hoc mechanism without authentication.
I could work on this, but that seems like a lot of work, especially for
me who knows nothing about the daemon (but hey, it's a great opportunity
to learn!).
Would anyone else like to pick this up?
Otherwise I'll keep this on my todo list.
Cheers!
--
Pierre Neidhardt
https://ambrevar.xyz/
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