Re: Avoiding rebuilds (e.g. of mariadb, the entire Rust chain, etc.)?

[zimoun]

Hi,

On Sun, 26 Dec 2021 at 23:41, Matthew Brooks <matthewfbrooks@mailbox.org> wrote:

> I've got substitutes turned off (primarily because I like the idea of
> every package being "home built" as it were), but I can't imagine that
> even the official substitiute servers would be able to keep up with
> the constant rebuilds my system seems to want unless I've got
> something horribly misconfigured somewhere. 

The only “home built” are the “tunable“ [1] packages, which are very
rare.  Otherwise, Guix tries very hard to build portable packages [2].

Personally, I see only 2 cases to have substitutes turned off:

  1) you often challenge your builds against substitutes ones and report
     reproducibility or performances issues,
  2) you inspect all the sources for trusting them before building.

If not, for what my opinion is worth, I do not understand the aim for
burning such energy in this world of climate change.

1: <https://issues.guix.gnu.org/52283#27>
2:<https://hpc.guix.info/blog/2018/01/pre-built-binaries-vs-performance/>


Cheers,
simon