On 05/07/2012 12:33 PM, Stelian Ionescu wrote: > 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]
We can get similar results using booleans with REQUIRED_USE, and your approach seems to introduce needless complexity. -- Thanks, Zac
