Bug#921069: libxcb-dri3.so.0: added ABI without increasing -version-info

[Julien Cristau]

On 2/1/19 10:14 AM, Simon McVittie wrote:
> libxcb-dri3 version 1.13 appears to have added new symbols without increasing
> the minor ABI version in its -version-info. This will break anything that
> compares libraries by their version info to decide which one is newer.
> 
> The Steam Runtime uses libraries' major/minor/micro ABI version info (in this
> case 0.0.0) to decide whether to use the system copy of a library or the copy
> in the Steam Runtime, depending on which one is newer (#921026). We can
> work around this by adding a versioned dependency on libxcb-dri3-0 and
> deleting the copy from the Steam Runtime, but this isn't a particularly
> scalable solution.
> 
That's kind of a bad side effect of the xcb-proto / libxcb split, where
the actual contents of the libraries depend on the xcb-proto xml files.
 I'm not sure how to fix that.

Cheers,
Julien