Re: [gentoo-dev] Guidelines for IUSE defaults

[Ulrich Mueller]

>>>>> On Tue, 7 Feb 2017, Ian Stakenvicius wrote:

> On 07/02/17 08:27 AM, Michael Orlitzky wrote:
>>
>> The thread wasn't about discouraging IUSE defaults, rather to
>> decide when they are appropriate. You cannot omit "pkginternal"
>> from USE_ORDER, because you will break all of the packages whose
>> defaults are either critical to the package, or prevent a
>> REQUIRED_USE conflict.

"The package manager may use it as a suggestion" seems pretty clear.
PMS doesn't require that a package manager honours these defaults.
So if anything is broken after removing them from USE_ORDER, then it
was already broken before.

Conversely, I don't see why package maintainers shouldn't use IUSE
defaults to enable (or disable, though that is rarely used) those
flags that they deem the package's best default configuration.

> OK, can we all decide out of this thread, that if any package is
> enabling critical functionality via IUSE-defaults (or rather, IUSE
> defaults alone), that this be addressed through package.use.force in
> profiles OR through removal of the flag?

Right. Also REQUIRED_USE should be used sparingly, and only for
libraries whose reverse USE dependencies would otherwise break.
In all other cases, fall back to a reasonable default if flag settings
are incompatible.

Ulrich