[bug#56758] [PATCH 0/2] Don't try to mkdir XDG_RUNTIME_DIR

[Maxime Devos]

On 01-08-2022 14:49, Andrew Tropin wrote:

> > However this one is incorrect as it would lead (ice-9 string-fun) from
> > the host Guile to be imported into the build environment, thereby making
> > the result dependent on the version of Guile that is used “outside” (you
> > may have seen a warning like “importing (ice-9 string-fun) from the
> > host”.)
> >       
> Why so?  I expected modules closure to be compiled on build side and
> provided to activation script via preset load-path.
>

This is true, and this causes the problem that Ludo' describes:

Two problems:

* (ice-9 string-fun) is part of Guile, so compiling it again is pointless (and potentially harmful, if ice-9/string-fun.scm contains a reference /gnu/store/.../some-target-specific-library.so)

* a form of non-determinism and non-reproducibility -- you are copying the modules from the Guile that 'guix' is run with, instead of always using the modules from the Guile that is defined inside Guix.

* additionally, maybe the inside-Guix and what-Guix-is-compiled-with Guile expect different behaviour of (ice-9 string-fun), causing bugs

Greetings,
Maxime.

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