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

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From: Denis 'GNUtoo' Carikli <GNUtoo <at> cyberdimension.org>
To: 42735 <at> debbugs.gnu.org
Cc: Denis 'GNUtoo' Carikli <GNUtoo <at> cyberdimension.org>
Subject: [bug#42735] [PATCH] pre-inst-env: don't use GUIX_PACKAGE_PATH
Date: Fri,  7 Aug 2020 04:21:42 +0200

./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.

In addition, when packages are defined in both the guix source tree and in
GUIX_PACKAGE_PATH, GUIX_PACKAGE_PATH will take the precedence and guix
will print warnings like that:
    guix build: warning: ambiguous package specification `libsamsung-ipc'
    guix build: warning: choosing libsamsung-ipc <at> 0.1 from
                         /home/[...]/.config/guix/local/replicant.scm:31:2

That situation can happen when working in a new package in
GUIX_PACKAGE_PATH and then importing the package in the guix source tree to
add it upstream.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo <at> cyberdimension.org>
---
 build-aux/pre-inst-env.in | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build-aux/pre-inst-env.in b/build-aux/pre-inst-env.in
index e0aa7fe868..698a7994fb 100644
--- a/build-aux/pre-inst-env.in
+++ b/build-aux/pre-inst-env.in
@@ -59,4 +59,8 @@ export NIX_HASH
 GUIX_UNINSTALLED=1
 export GUIX_UNINSTALLED
 
+# Make sure we don't use local package definitions
+GUIX_PACKAGE_PATH=""
+export GUIX_PACKAGE_PATH
+
 exec "$@"
-- 
2.28.0

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