sage_setup.setenv: Only set ...PATH variables and LDFLAGS if SAGE_LOCAL differs from SAGE_VENV

[mkoeppe]

Here's a different attempt to solve the issue at #31338 comment:13

This will need to be tested with #29039, #31396, for which this mechanism was created.

CC: @kiwifb @antonio-rojas

Component: build

Author: Matthias Koeppe

Branch/Commit: 0867811

Reviewer: François Bissey

Issue created by migration from https://trac.sagemath.org/ticket/32057

[mkoeppe]

Branch: u/mkoeppe/sage_setup_setenv__only_set____path_variables_and_ldflags_if_sage_local_differs_from_sage_venv

[mkoeppe]

Author: Matthias Koeppe

[mkoeppe]

Commit: 0867811

[mkoeppe]

New commits:

0867811

src/sage_setup/setenv.py: Only set ...PATH variables and LDFLAGS if SAGE_LOCAL differs from SAGE_VENV

[kiwifb]

comment:3

Does what it says on the tin for sage-on-gentoo. No more log pollution.

[mkoeppe]

comment:4

Thanks for testing!

[kiwifb]

comment:5

It is a positive for me but we have to check it ticks all the other boxes you mention in the description.

[dimpase]

comment:6

ready for review?

[mkoeppe]

comment:8

Sure, let's get this in.

[kiwifb]

Reviewer: François Bissey

[kiwifb]

comment:9

Well I am happy to it a glowing review.

[mkoeppe]

comment:10

Thanks!

[vbraun]

Changed branch from u/mkoeppe/sage_setup_setenv__only_set____path_variables_and_ldflags_if_sage_local_differs_from_sage_venv to 0867811