On Mon, 2012-05-07 at 11:11 -0700, Zac Medico wrote: > On 05/06/2012 05:47 PM, Arfrever Frehtes Taifersar Arahesis wrote: > > 2012-05-06 02:34:26 hasufell napisał(a): > >> # grep :webkit use.local.desc | wc -l > >> 33 > >> > >> I would vote to make this a global useflag: > >> > >> webkit - Adds support for the webkit library/module > > > > I suggest to use separate qt-webkit (or webkit-qt) and webkit-gtk USE flags. > > Another possible way to model this kind of relationship would be to us > REQUIRED_USE to enforce relationships with the qt and gtk flags: > > REQUIRED_USE="webkit? ( qt ) !webkit? ( !qt ) qt? ( webkit ) !qt? ( > !webkit )" > > versus > > REQUIRED_USE="webkit? ( gtk ) !webkit? ( !gtk ) gtk? ( webkit ) !gtk? ( > !webkit )" > > It's pretty awkward with the existing operators, but we could extend the > REQUIRED_USE syntax to support an equivalent operator in a future EAPI.
Isn't it the time to make a new EAPI which no longer has USE "flags" but USE "values" ? Many of the really weird USE flags combinations would be much more clearly expressed if the possible types for a USE variable were: 1) member-of: for choosing the backend of certain functionality; e.g. all combinations of USE="ssl openssl gnutls nss" would become e.g. in the ebuild: USE="ssl=[member-of: openssl,gnutls,nss]" in make-conf: USE: ssl=openssl, as synonymous of old USE="ssl openssl", or USE: ssl=none, as synonymous of old USE="-ssl" 2) subset-of: for selecting a number of modules to build. This would replace USE_EXPAND quite neatly 3) boolean: as alias for member-of: [true,false] 4) unsigned int: IIRC some (few) packages can take optional uint at configure-time. for example with dev-lisp/sbcl one can customize some hardcoded GC parameters suchs as the default heap size, generation size, etc... In the above case, one could have a USE variable named "webkit" of type member-of: [qt,gtk] -- Stelian Ionescu a.k.a. fe[nl]ix Quidquid latine dictum sit, altum videtur. http://common-lisp.net/project/iolib
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