Bug#911772: fontconfig: missing build dependencies

[Laurent Bigonville]

Le 6/11/18 à 16:57, Francesco Potortì a écrit :
>>> I unistalled the previously installed build dependencies, and then asked
>>> aptitude to reinstall them but uuid-dev and docbook-utils were not
>>> installed.
>> I really cannot explain that because both uuid-dev and docbook-utils are
>> explicitly listed in the Build-Depends of the package currently in unstable.
>>
>> What is apt-cache showsrc fontconfig showing?
> Here it is.  I am using testing, not unstable.
>
> Please note that starting tomorrow I will not be able to answer queries
> until next Wednesday, as I will be travelling.  I will be able to answer
> simple queries today.
>
>
> Package: fontconfig
> Binary: fontconfig, fontconfig-config, fontconfig-udeb, libfontconfig1-dev, libfontconfig1, libfontconfig1-dbg
> Version: 2.11.0-6.7
> Maintainer: Keith Packard <keithp at debian.org>
> Uploaders: Josselin Mouette <joss at debian.org>
> Build-Depends: cdbs (>= 0.4.93), dh-autoreconf, debhelper (>= 9), libfreetype6-dev (>= 2.1.7), libexpat1-dev, pkg-config, gperf, po-debconf

That's the issue, you somehow have the definition of the source package 
from stable and apt is using this.

1) Do you have the repository of stable defined in your sources? 
apt-cache showsrc is showing you way too much packages and even versions 
(like 2.12.6-0.1) that are not in the archive anymore, this might be a 
configuration issue on your side.

2) This might also be a bug in apt as it's taking the build-dependency 
list from stable and not from unstable.

Anyway this is not a bug in fontconfig