gir1.2-caja is someway broken - unable to import Caja from gi.repository

[Norbert]

I was trying to port TortoiseHG to Caja (see https://bitbucket.org/nrbrtx/caja-thg) and got a problem in Ubuntu 14.10 MATE, Ubuntu 14.04 (with MATE PPAs), Ubuntu 12.04 (with MATE PPAs).

Steps to reproduce:
   1. install "gir1.2-caja" package with "sudo apt-get install gir1.2-caja"
   2. test Caja is available with "python -c "from gi.repository import Caja" command

Expected results:
   Caja is imported successfully.

Actual results:
   Got error:
      Traceback (most recent call last):
        File "<string>", line 1, in <module>
      ImportError: cannot import name Caja

If I try to import Caja in LinuxMinut 17 MATE it imports normally.

So there is something wrong with Ubuntu gir1.2-caja package.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: gir1.2-caja 1.8.2-1
ProcVersionSignature: Ubuntu 3.16.0-10.15-generic 3.16.1
Uname: Linux 3.16.0-10-generic i686
ApportVersion: 2.14.6-0ubuntu2
Architecture: i386
CasperVersion: 1.343
Date: Sun Oct 12 15:02:18 2014
Dependencies:

LiveMediaBuild: Ubuntu MATE 14.10 "Utopic Unicorn" - beta1 i386 (20140828)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: caja
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: i386
CasperVersion: 1.340
DistroRelease: Ubuntu 14.04
LiveMediaBuild: Ubuntu MATE 14.04.1 "Trusty Tahr" - final i386 (20141111)
Package: caja 1.8.2-1~trusty1 [origin: LP-PPA-ubuntu-mate-dev-trusty-mate]
PackageArchitecture: i386
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.13.0-39.66-generic 3.13.11.8
Tags: third-party-packages trusty
Uname: Linux 3.13.0-39-generic i686
UnreportableReason: This is not an official Ubuntu package. Please remove any third party package and try again.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True

[Norbert (nrbrtx)]

I subscribed Ubuntu MATE developers to inform them about the problem.

[Norbert (nrbrtx)]

Added PPAs to Ubuntu 14.04.1, it is affected by this bug too.

[Norbert (nrbrtx)]

Added PPAs to Ubuntu 12.04.5, it is affected by this bug too.

[Norbert (nrbrtx)]

I found the problem.
gir1.2-caja package from LinuxMint (for example - http://packages.linuxmint.com/pool/upstream/c/caja/gir1.2-caja_1.8.1-1+qiana_all.deb ) and from MATE ppa (for example http://archive.ubuntu.com/ubuntu/pool/universe/c/caja/gir1.2-caja_1.8.2-1_i386.deb) have different file structure.

Mint - gir1.2-caja_1.8.1-1+qiana_all.deb:
   /usr/lib/girepository-1.0/Caja-2.0.typelib
   /usr/share/doc/gir1.2-caja/changelog.Debian.gz
   /usr/share/doc/gir1.2-caja/copyright
   /usr/share/gir-1.0/Caja-2.0.gir

PPA - gir1.2-caja_1.8.2-1_i386.deb:
   /usr/lib/i386-linux-gnu/girepository-1.0/Caja-2.0.typelib <- this path is wrong!
   /usr/share/doc/gir1.2-caja/changelog.Debian.gz
   /usr/share/doc/gir1.2-caja/copyright
   /usr/share/gir-1.0/Caja-2.0.gir

If I move /usr/lib/i386-linux-gnu/girepository-1.0/Caja-2.0.typelib to /usr/lib/girepository-1.0/Caja-2.0.typelib
I can import Caja from gi.repository in Ubuntu 14.10 MATE, Ubuntu 14.04.1 (with MATE PPAs), in Ubuntu 12.04.5 I got other error (not related to this bug).

So gir1.2-caja should be repacked (Caja-2.0.typelib should be placed in /usr/lib/girepository-1.0/ , not in /usr/lib/i386-linux-gnu/girepository-1.0/Caja-2.0.typelib ). Please make this change and bug will be fixed.

[Norbert (nrbrtx)]

Bug exists in Ubuntu Utopic 14.10 final.

[Norbert (nrbrtx)]

apport information

[Norbert (nrbrtx)]

Bug exists in Ubuntu MATE 14.04 final. Please fix it as written is comment 4.

[Martin Wimpress  (flexiondotorg)]

I've worked with the Debian maintainers and have published new `caja` packages in my PPAs for Ubuntu MATE 14.04 and Ubuntu MATE 14.10. Once you `dist-upgrade` this new caja package installs the gir1.2-caja typelib in the correct location.

That said, this is simply working around a bug in Ubuntu. Ubuntu doesn't support multi-arch gir. So, this fix is a hack. I will now have to determine if Ubuntu will address this issue in 15.04 or if I should work with the Debian maintainers to integrate Ubuntu specific work around upstream.

[Norbert (nrbrtx)]

Dear Martin!
Thank you for your fix, I'll test it.

If it possible, please fix this bug for Ubuntu 12.04 too.
I hope that your packages will be included to MATE PPA.

[Norbert (nrbrtx)]

Tested on 32-bit Ubuntu 14.04.1 and 14.10 with MATE PPAs - gir1.2-caja works as expected.

If you can - please build packages for Ubuntu Precise 12.04 too.

[Martin Wimpress  (flexiondotorg)]

New `caja` and `python-caja` packages have been published to my MATE for Precise PPA.

[Norbert (nrbrtx)]

Tested on 64-bit Ubuntu 12.04.5 with MATE PPAs - bug is fixed.

Thank you, Martin!

[Martin Wimpress  (flexiondotorg)]

Ubuntu 15.04 now supports multilib Gobject-introspection runtime which fixes this issue.