Re: [gentoo-dev] [RFC PATCH] profiles/base: Set initial ENV_UNSET (EAPI 7)

[Kent Fredric <kentnl@gentoo.org>]

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On Wed,  2 May 2018 17:42:19 +0200
Michał Górny <mgorny@gentoo.org> wrote:

> Now that EAPI 7 is accepted and implemented in Portage, provide
> the initial environment blacklist for coming EAPI 7 ebuilds.  The list
> is based on existing eclasses, xdg-utils mostly.  Rationale is provided
> in the comment above ENV_UNSET.

It may be worth adding the values from perl-functions.eclass's
perl_check_env() test, but I'd have to get a second opinion from
dilfridge.

The only real downside of leveraging this approach is if there's some
unforseen but justifiable excuse to let these ENV vars blead
*intentionally*, it might be a bit of work to subvert.

( reading EAPI7's PMS docs says its a non-aggregated variable and none
of the standard approaches like ENV_UNSET=" -FOO" are documented to
work )

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