Bug#939768: gimp: After the last upgrade, GIMP crashes when creating a new image or opening an existing one.

[Asher Gordon]

Package: gimp
Version: 2.10.8-2+b1
Followup-For: Bug #939768

Hello,

I'm also using testing (bullseye) and I can confirm this bug too.

Here's what I think happened:

GIMP 2.10.8-2 was built on sid (which had GEGL 0.4.12 at the
time). Testing also had GEGL 0.4.12, so there was no version mismatch
and everything was fine. Then, GIMP 2.10.8-2+b1 was built on sid, which
now has GEGL 0.4.14. When GIMP 2.10.8-2+b1 (now built against GEGL
0.4.14) migrated to testing (which still has GEGL 0.4.12), the version
mismatch occurred causing the GIMP to crash.

Note that I am just guessing the versions of packages that sid and
testing had in the past, so it should be taken with a grain of salt.

If this is the case, there appears to be three obvious fixes:

1. Migrate GEGL 0.4.14 to testing.
2. Revert the testing GIMP package to 2.10.8-2.
3. Build the testing GIMP package against GEGL 0.4.12.

Since GEGL is 188 days old and should be migrated anyway, 1. seems to be
preferable. Looking at the package tracker [1], it appears that there
are some migration issues that need to be looked at, so perhaps 2. could
be a temporary fix. I'm not sure how 3. would be implemented, since the
sid GIMP package would still need to be built against GEGL 0.4.14.

In the future, care should be taken to avoid GEGL mismatches like this.

By the way, #939754 looks like the same bug.

Hope this helps,
Asher

P.S. I am neither a GIMP developer nor a Debian developer, just an
affected user trying to help.


[1] https://tracker.debian.org/pkg/gegl

-- 
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		-- R. Emerson
		-- Quoted from a fortune cookie program
		(whose author claims, "Actually, stealing IS easier.")
		[to which I reply, "You think it's easy for me to
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-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 5.2.0-2-amd64 (SMP w/2 CPU cores)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (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+b1
ii  libbabl-0.1-0        0.1.62-1
ii  libbz2-1.0           1.0.6-9.2
ii  libc6                2.28-10
ii  libcairo2            1.16.0-4
ii  libfontconfig1       2.13.1-2+b1
ii  libfreetype6         2.9.1-4
ii  libgcc1              1:9.2.1-4
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+b1
ii  libglib2.0-0         2.60.6-2
ii  libgs9               9.27~dfsg-3.1
ii  libgtk2.0-0          2.24.32-3
ii  libgudev-1.0-0       232-2
ii  libharfbuzz0b        2.6.1-2
ii  libheif1             1.5.1-1
ii  libilmbase24         2.3.0-6
ii  libjpeg62-turbo      1:1.5.2-2+b1
ii  liblcms2-2           2.9-3+b1
ii  liblzma5             5.2.4-1+b1
ii  libmng1              1.0.10+dfsg-3.1+b5
ii  libmypaint-1.3-0     1.3.0-2.1+b1
ii  libopenexr24         2.3.0-6
ii  libopenjp2-7         2.3.0-2
ii  libpango-1.0-0       1.42.4-7
ii  libpangocairo-1.0-0  1.42.4-7
ii  libpangoft2-1.0-0    1.42.4-7
ii  libpng16-16          1.6.37-1
ii  libpoppler-glib8     0.71.0-5+b1
ii  librsvg2-2           2.44.14-1
ii  libstdc++6           9.2.1-4
ii  libtiff5             4.0.10+git190818-1
ii  libwebp6             0.6.1-2+b1
ii  libwebpdemux2        0.6.1-2+b1
ii  libwebpmux3          0.6.1-2+b1
ii  libwmf0.2-7          0.2.8.4-14
ii  libx11-6             2:1.6.7-1
ii  libxcursor1          1:1.2.0-2
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
ii  zlib1g               1:1.2.11.dfsg-1+b1

Versions of packages gimp recommends:
ii  ghostscript  9.27~dfsg-3.1

Versions of packages gimp suggests:
pn  gimp-data-extras          <none>
ii  gimp-help-en [gimp-help]  2.8.2-1
pn  gimp-python               <none>
ii  gvfs-backends             1.38.1-5
ii  libasound2                1.1.8-1

-- no debconf information
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