Package: fontconfig-config Version: 2.13.0-5 Severity: normal It's possible to satisfy stable's fontconfig dependency on fontconfig-config with sid's version, although the config files appear to be completely incompatible. I think fontconfig-config is lacking an appropriate Breaks: header for the versions either side of the config file language change.
The consequences are a lot of fontconfig errors on stderr, and very unreadable fonts :-) (I ended up in this situation by upgrading fontconfig* to sid by installing sid's "firefox", then later downgrading to install stable's "wine".) -- System Information: Debian Release: 9.4 APT prefers stable APT policy: (990, 'stable'), (500, 'stable-debug'), (500, 'unstable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.14.0-0.bpo.3-amd64 (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages fontconfig-config depends on: ii debconf [debconf-2.0] 1.5.61 ii fonts-dejavu-core 2.37-1 ii fonts-liberation 1:1.07.4-2 ii ttf-bitstream-vera 1.10-8 ii ucf 3.0036 fontconfig-config recommends no packages. fontconfig-config suggests no packages. -- debconf information: fontconfig/subpixel_rendering: Automatic fontconfig/hinting_type: Native fontconfig/enable_bitmaps: false fontconfig/hinting_style: hintslight