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Re: Bug#737855: libnss3-dev: arch-dependent file in "Multi-Arch: same" package

On Sun, Aug 02, 2020 at 11:50:11PM +0200, Helmut Grohne wrote:
> Hi Mike,
> On Mon, Aug 03, 2020 at 05:39:23AM +0900, Mike Hommey wrote:
> > I'd rather replace nss-config with upstream's.
> Please don't. That makes nss-config subtly buggy. The upstream
> nss-config simply calls into pkg-config. In particular, it uses the
> unqualified pkg-config. So the behaviour of nss-config becomes dependent
> on the architecture you install pkg-config. In practice that means that
> means when you install libnss3-dev for a foreign architecture, it will
> be broken. And that amounts to breaking cross builds.
> Really, using upstream's is the worst of choices here. Even removing
> nss-config entirely would be better as that'd force dependent packages
> (of which there are about 12) to properly use pkg-config instead.

Upstream's nss-config uses pkg-config for 3 things:
- getting exec_prefix. It's always /usr, independently of the pkg-config
  you use
- getting includedir. It's always /usr/include/nss, independently of the
  pkg-config you use
- getting libdir. This varies dependending on the pkg-config you use,
  but so does the content of the current nss-config, and as was said
  up-thread, nothing uses that.

So really, using upstream's nss-config wouldn't break things more than
they currently are, while it would fix the immediate multi-arch problem.
All the while not breaking any reverse-dependency.


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