Bug#971812: gimp cannot be started because of dependency on wrong version of libgegl-0.4-0 package

[Artur Linhart]

Package: gimp
Version: 2.10.8-2
Severity: grave
Justification: renders package unusable

In the curent state of available packages from stable (buster) the program GIMP
cannot be used. After start it shows following message:

"GEGL operation missing!

GIMP requires the GEGL operation "gegl:seamless-clone".
This operation cannot be found. Check your
GEGL install and ensure it has been compiled
with any dependencies required for GIMP."

and ends. If started from command line, then following additional error message
is produced to the console:

"$ gimp
GEGL-Message: 20:38:16.980: Fehler beim Laden von Modul »/usr/lib/x86_64-linux-
gnu/gegl-0.4/seamless-clone.so«: /usr/lib/x86_64-linux-gnu/libgegl-sc-0.4.so:
undefined symbol: __exp_finite
"

This bug has been already reported as a bug https://bugs.debian.org/cgi-
bin/bugreport.cgi?bug=968342 and was closed with the statement the dependency
has to be used on libgegl-0.4-0 where the problem has been fixed, but the
problem is, such version is not available on stable - buster, or even buster-
backports. It breaks the basic rule, the stable packages have to depend only on
stable packages. The todays stable (buster) version of libgegl-0.4-0 which is
0.4.12-2, does not contain the functionality, needed by the current stable
version of gimp (2.10.8-2), what means the dependency in this gimp package
version is defined ina wrong way, it should be defined like (>= 0.4.18-1) and
not, like defined (>= 0.4.12).

neither gimp, not libgegl-0.4-0 cannot be in the current stable version
downgraded, which seems to be the reason, why the software after update of the
stable system renders to be unbusable for everybody who keeps strictly on
stable releases.

Proposed solution: move the library libgegl-0.4-0 of version >= 0.4.18-1 from
testing to stable or buster-backports... I cannot imagine, we cannot use GIMP
software for the next 2 years until bullseye becomes stable.



-- System Information:
Debian Release: 10.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.7.0-0.bpo.2-amd64 (SMP w/16 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE, TAINT_AUX
Locale: LANG=cs_CZ.UTF-8, LC_CTYPE=cs_CZ.UTF-8 (charmap=UTF-8), LANGUAGE=cs:en_US:de (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gimp depends on:
ii  gimp-data            2.10.8-2
ii  libaa1               1.4p5-46
ii  libbabl-0.1-0        0.1.62-1
ii  libbz2-1.0           1.0.6-9.2~deb10u1
ii  libc6                2.31-3
ii  libcairo2            1.16.0-4
ii  libfontconfig1       2.13.1-2
ii  libfreetype6         2.9.1-3+deb10u1
ii  libgcc-s1 [libgcc1]  10.2.0-9
ii  libgcc1              1:8.3.0-6
ii  libgdk-pixbuf2.0-0   2.38.1+dfsg-1
ii  libgegl-0.4-0        0.4.12-2
ii  libgexiv2-2          0.10.9-1
ii  libgimp2.0           2.10.8-2
ii  libglib2.0-0         2.58.3-2+deb10u2
ii  libgs9               9.27~dfsg-2+deb10u4
ii  libgtk2.0-0          2.24.32-3
ii  libgudev-1.0-0       232-2
ii  libharfbuzz0b        2.3.1-1
ii  libheif1             1.3.2-2~deb10u1
ii  libilmbase23         2.2.1-2
ii  libjpeg62-turbo      1:1.5.2-2+b1
ii  liblcms2-2           2.9-3
ii  liblzma5             5.2.4-1
ii  libmng1              1.0.10+dfsg-3.1+b5
ii  libmypaint-1.3-0     1.3.0-2.1
ii  libopenexr23         2.2.1-4.1+deb10u1
ii  libopenjp2-7         2.3.0-2+deb10u1
ii  libpango-1.0-0       1.42.4-8~deb10u1
ii  libpangocairo-1.0-0  1.42.4-8~deb10u1
ii  libpangoft2-1.0-0    1.42.4-8~deb10u1
ii  libpng16-16          1.6.36-6
ii  libpoppler-glib8     0.71.0-5
ii  librsvg2-2           2.44.10-2.1
ii  libstdc++6           10.2.0-9
ii  libtiff5             4.1.0+git191117-2~deb10u1
ii  libwebp6             0.6.1-2
ii  libwebpdemux2        0.6.1-2
ii  libwebpmux3          0.6.1-2+b1
ii  libwmf0.2-7          0.2.8.4-14
ii  libx11-6             2:1.6.7-1+deb10u1
ii  libxcursor1          1:1.1.15-2
ii  libxext6             2:1.3.3-1+b2
ii  libxfixes3           1:5.0.3-1
ii  libxmu6              2:1.1.2-2+b3
ii  libxpm4              1:3.5.12-1
ii  xdg-utils            1.1.3-1+deb10u1
ii  zlib1g               1:1.2.11.dfsg-2

Versions of packages gimp recommends:
ii  ghostscript  9.27~dfsg-2+deb10u4

Versions of packages gimp suggests:
pn  gimp-data-extras          <none>
pn  gimp-help-en | gimp-help  <none>
pn  gimp-python               <none>
ii  gvfs-backends             1.38.1-5
ii  libasound2                1.1.8-1

-- no debconf information