[arch-general] PKGBUILD "provides" not handled correctly?

[Norbert Zeh]

Hi folks,

I have just run into a weird problem.  I have a machine that isn't too happy
with the 3.3.x kernel series.  So I'm running linux-lts on it, but that one is
meant for servers, so isn't as responsive as one would like on a desktop system.
So I've decided to throw a little PKGBUILD together that compiles linux-lts with
CONFIG_HZ set to 1000 but is otherwise unchanged from the version in ABS.

To ensure this tweaked lts kernel does not get inadvertently overwritten by a
linux-lts upgrade, I've changed the package name in the PKGBUILD to
linux-lts-local.  I've added "linux-lts" to the conflicts/provides/replaces
lists in the PKGBUILD to ensure that I do not install linux-lts and
linux-lts-local at the same time and to ensure that all packages that rely on
linux-lts continue to have their dependencies satisfied...or so I thought.

Compiling the tweaked lts kernel and installing this kernel instead of linux-lts
on my laptop with intel graphics works without problems.  My office desktop is a
machine with an NVIDIA card and I'm using nvidia-lts as my graphics driver.
When trying to replace linux-lts with linux-lts-local using pacman -U, pacman
complains that nvidia-lts requires linux-lts>=3.0.0 and refuses to continue.
Now I'm confused: linux-lts-local provides linux-lts, and the version is
3.0.29-1.  So why does pacman complain?  Any pointers are much appreciated.

Cheers,
Norbert