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[bug#42735] [PATCH] pre-inst-env: don't use GUIX_PACKAGE_PATH

From: Mathieu Othacehe
Subject: [bug#42735] [PATCH] pre-inst-env: don't use GUIX_PACKAGE_PATH
Date: Fri, 07 Aug 2020 10:41:52 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)

Hello Denis,

> ./pre-inst-env is supposed to use only the packages definitions that are in
> the guix source tree and not the host packages.
> However if GUIX_PACKAGE_PATH is set, it will use host packages as well.

Let say you have a custom my-hello package inheriting from hello, and
you want to build it on top of a recent Guix checkout, then you probably
want GUIX_PACKAGE_PATH to cooperate with pre-inst-env.

Same goes if you have a manifest mixing Guix packages and custom
packages accessed by GUIX_PACKAGE_PATH, and you want to test your
manifest on top of a Guix checkout using pre-inst-env.



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