[Oneiric] dpkg error when upgrading librsvg (2.34.0-0ubuntu4)

[Harry]

Here is the error message I get when upgrading the librsvg (2.32.1-1ubuntu1 to 2.34.0-0ubuntu4)

Preparing to replace librsvg2-common 2.32.1-1ubuntu1 (using .../librsvg2-common_2.34.0-0ubuntu4_amd64.deb) ...
Unpacking replacement librsvg2-common ...
dpkg: warning: unable to delete old directory '/usr/lib/gdk-pixbuf-2.0/2.10.0': Directory not empty
dpkg: warning: unable to delete old directory '/usr/lib/gdk-pixbuf-2.0': Directory not empty
Preparing to replace librsvg2-2 2.32.1-1ubuntu1 (using .../librsvg2-2_2.34.0-0ubuntu4_amd64.deb) ...
Unpacking replacement librsvg2-2 ...
Processing triggers for libgdk-pixbuf2.0-0 ...
Setting up librsvg2-2 (2.34.0-0ubuntu4) ...
Setting up librsvg2-common (2.34.0-0ubuntu4) ...
/var/lib/dpkg/info/librsvg2-common.postinst: 6: dpkg-architecture: not found
dpkg: error processing librsvg2-common (--configure):
 subprocess installed post-installation script returned error exit status 127
Processing triggers for libc-bin ...
No apport report written because MaxReports is reached already
                                                              ldconfig deferred processing now taking place
Errors were encountered while processing:
 librsvg2-common
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
Setting up librsvg2-common (2.34.0-0ubuntu4) ...
/var/lib/dpkg/info/librsvg2-common.postinst: 6: dpkg-architecture: not found
dpkg: error processing librsvg2-common (--configure):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 librsvg2-common

[Harry (harry33)]

If I then reinstall gdk-pixbuf2.0 packages (2.23.3-0ubuntu3), I get the following error message:

Preparing to replace libgdk-pixbuf2.0-0 2.23.3-0ubuntu3 (using .../libgdk-pixbuf2.0-0_2.23.3-0ubuntu3_amd64.deb) ...
Unpacking replacement libgdk-pixbuf2.0-0 ...
Preparing to replace gir1.2-gdkpixbuf-2.0 2.23.3-0ubuntu3 (using .../gir1.2-gdkpixbuf-2.0_2.23.3-0ubuntu3_amd64.deb) ...
Unpacking replacement gir1.2-gdkpixbuf-2.0 ...
Setting up libgdk-pixbuf2.0-0 (2.23.3-0ubuntu3) ...
Setting up gir1.2-gdkpixbuf-2.0 (2.23.3-0ubuntu3) ...
Setting up librsvg2-common (2.34.0-0ubuntu4) ...
/var/lib/dpkg/info/librsvg2-common.postinst: 6: dpkg-architecture: not found
dpkg: error processing librsvg2-common (--configure):
 subprocess installed post-installation script returned error exit status 127
No apport report written because MaxReports is reached already
                                                              Errors were encountered while processing:
 librsvg2-common
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
Setting up librsvg2-common (2.34.0-0ubuntu4) ...
/var/lib/dpkg/info/librsvg2-common.postinst: 6: dpkg-architecture: not found
dpkg: error processing librsvg2-common (--configure):
 subprocess installed post-installation script returned error exit status 127
Errors were encountered while processing:
 librsvg2-common

[Anders Kaseorg (andersk)]

dpkg-architecture is part of dpkg-dev, so it can’t be used in librsvg2-common.postinst (a dpkg-dev dependency seems wrong).

[Michael Bienia (geser)]

Looks like the dpkg-architecture call needs to be replaced with the result like it is done for the postinst of gdk-pixbuf.

[Sebastien Bacher (seb128)]

Steve said he would update it to generate the directory at build time rather than run time

[Launchpad Janitor (janitor)]

This bug was fixed in the package librsvg - 2.34.0-0ubuntu5

---------------
librsvg (2.34.0-0ubuntu5) oneiric; urgency=low

  * debian/librsvg2-common.postinst: we can't rely on dpkg-architecture at
    runtime; postprocess this file in debian/rules to substitute in the
    architecture. LP: #788115
 -- Steve Langasek <email address hidden> Wed, 25 May 2011 13:48:34 -0700

[Harry (harry33)]

Confirming this bug is now fixed.
Thank You Steve!