On Friday, February 11, 2011 11:49:43 Samuli Suominen wrote: > On 02/11/2011 06:38 PM, "Paweł Hajdan, Jr." wrote: > > 4) What have we learned from libpng 1.2 -> 1.4 upgrade? I'd just like to > > be better informed. > > One way under consideration: > > We have been discussing about removing libpng.pc, libpng.so and > unversioned headers from the libpng 1.5.x package allowing it to install > parallel with libpng 1.4.x. > > That means every package that has been checked working against 1.5.x, > will need to be patched to link against -lpng15, use headers from the > libpng15/ directory and use libpng15.pc instead. > > Or we go with the old route as with 1.2 to 1.4 but that means everything > must be ported before it gets KEYWORDS.
i dont see any real advantages with SLOT-ed installs of libpng beyond ABI (i.e. what we're doing today with libpng-1.2.x and libpng-1.4.x). there are however plenty of downsides. patching packages in the tree is a huge hassle, you add hassle to end users who d/l random packages and try to build things themselves, and you make Gentoo non-standard wrt every other distro out there. best we follow what everyone else is already doing, and what upstream packages will have to ultimately do anyways -- fix their code to work with libpng-1.5 when the API has been forcibly broken. -mike
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