propagatedBuildInputs, because those inputs are required by the *.pc
or *.la files of the package:
- If a *.pc file references a non-propagated input, then Gnome
packages have the bad tendency to silently ignore this problem in
configure scripts - the failure of a command like `pkg-config
--cflags foo' will be ignored if a dependency of foo.pc is
missing, so no flags will be added, and the build will fail later
on a missing header or library.
- If a *.la file references a non-propagated input, the build will
also fail, because Libtool will add library dependencies that it
cannot find. (Arguably *.la files should never reference packages
that aren't in the corresponding *.pc file, but they do it
anyway).
By setting the propagatedBuildInputs properly, it should be possible
to get rid of all the NIX_CFLAGS_COMPILE / NIX_LDFLAGS hacks in the
Gnome expressions.
svn path=/nixpkgs/branches/xorg-7.5/; revision=18084
