Dnia 2014-06-11, o godz. 13:12:38 Chí-Thanh Christopher Nguyễn <chith...@gentoo.org> napisał(a):
> > REQUIRED_USE=" > > curl_ssl_winssl? ( elibc_Winnt ) > > ssl? ( > > ^^ ( > > [...] > > ) > > )" > > I don't like this. If the user specifies several SSL providers in > make.conf, it should mean that any of these is fine and the ebuild can > choose an arbitrary one. The exactly-one-of operator would cause emerge > to complain in this case and possibly force the user to have complex > package.use setups. Your idea comes with three significant drawbacks: 1. USE flag setups become unclear -- user sees five different SSL providers turned on and has no clue which one is actually used. 2. You create 2^n-1 valid USE flag combinations which map to n different file sets. This means that there are 2^n-n-1 useless USE flag combination which make matching binary packages a PITA. 3. There is no clean way of enforcing SSL provider match between packages. Wasn't this thread initially about curl and rtmpdump requiring matching flags? -- Best regards, Michał Górny
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