Inkscape actually is a nice program. Maybe some of the competition (like Omnigraffle) are nicer. But then again, Inkscape beats them with the fact that it’s free. It also has a lot of useful extensions (like Textext). Unfortunately, they managed to break the whole Python extension mechanism for 64bit OS X.

The exact error message was always:

The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from http://cheeseshop.python.org/pypi/lxml/, or install it through your package manager by a command like: sudo apt-get install python-lxml

And of course none of the hints found on Google helped…

Of course the first thing I tried was installing the lxml module. To no avail. I have multiple Python installations in my system, so I continued with installing it for every one of them. Still, nothing. Following some hints I tried fiddling with libxml2 and other libraries. No effect.

It turns out, that Inkscape team tried to be nice and Mac style, so they bundled the extensions by themselves. The problem is: lxml/etree.so: Mach-O bundle i386 This would not be that bad, as: /usr/bin/python: Mach-O universal binary with 3 architectures /usr/bin/python (for architecture x86_64): Mach-O 64-bit executable x86_64 /usr/bin/python (for architecture i386): Mach-O executable i386 /usr/bin/python (for architecture ppc7400): Mach-O executable ppc Which should be used by a program, that wants a standard framework. Unfortunately they happily run whatever is first in the path, ending up with my custom 64bit only interpreter. Which can’t load the 32bit only library they provide.

The only remaining quirk is the misleading error message. This is due to the simple code:

try:
    from lxml import etree
except Exception, e:
    sys.exit(_('The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from http://cheeseshop.python.org/pypi/lxml/, or install it through your package manager by a command like: sudo apt-get install python-lxml'))

That was created probably way before the decision to include lxml. But since that it’s not valid any more…

Being a good child I added my findings about the problem to the long time open Launchpad bug and suggested fixing the error message.

Anyhow, the fix is as simple as: rm -r /Applications/Inkscape.app/Contents/Resources/python This gets rid of all the broken Inkscape bundled python stuff. In case you don’t already have the modules installed, then run: easy_install lxml easy_install numpy

Komentarze

  • riddle (2010-07-06 00:12:24): I hate when people do this instead of actually contributing something valuable, but may I just suggest adding “pre { white-space: pre-wrap; } to template’s CSS?
  • Remigiusz ‘lRem’ Modrzejewski (2010-07-06 00:17:16): Well, I never cared about this theme because it’s meant to be temporary ;)
  • Mark (2012-01-04 20:44:17): It’s going to be officially fixed in 0.48.3 for Mac OS X 10.7. :D https://bugs.launchpad.net/inkscape/+bug/819209
  • Mark (2012-01-04 20:44:33): It’s going to be officially fixed in 0.48.3 for Mac OS X 10.7. :D https://bugs.launchpad.net/inkscape/+bug/819209
  • Remigiusz ‘lRem’ Modrzejewski (2012-01-05 15:33:25): Yeah, if this blog was primarily in English that would be nice ;)
  • Ross (2012-03-30 07:30:35): I have learn a few just right stuff here. Certainly value bookmarking for revisiting. I surprise how a lot attempt you place to create such a magnificent informative website.
  • Darren (2012-04-19 14:25:28): Hi - I’ve googled my way on to your blog as I’m using Inkscape .48.2 with OSX 10.7.3 and I can’t get the extensions to work - BUT I have no idea how to actually execute your fix. Could you explain please? many thx
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 14:32:40): Wow, they still did not fix it? I remember a claim that it’s already past in 2011…
  • Darren (2012-04-19 14:47:45): mmmOK - Python directory removed as suggested. But installing numpy in the command line comes up with…
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 14:49:51): Ah, that’s easy. Add sudo to the beginning of the command. So the whole thing will be:
  • Darren (2012-04-19 14:52:51): argghh sudo : easyinstall : command not found
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 14:54:30): Sorry, the blog engine ate _ signs, as it thought it is part of formatting. Disregard that line, just write sudo and then copy the line that was in the post.
  • Darren (2012-04-19 14:59:12): well, if it’s sudo and then easyinstall lxml easyinstall numpy I’m afraid then I get -bash: easyinstall: command not found btw thanks hugely for the quick responses, I appreciate it.
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 14:59:57): Nope, easinistall is not one word, it is two words delimited with underscores.
  • Darren (2012-04-19 15:01:36): while if it is sudo and then easyinstall lxml easyinstall numpy then I get error: can’t create or remove files in install directory
  • Darren (2012-04-19 15:03:10): sorry - all my underscores also being eaten,
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 15:04:08): Ok, last try to write it correctly: sudo easy_install lxml sudo easy_install numpy This looks correct in preview…
  • Darren (2012-04-19 15:10:11): ok - and thx again for your patience. For the install of lxml… Searching for lxml Reading http://pypi.python.org/simple/lxml/ Reading http://codespeak.net/lxml Best match: lxml 2.3.4 Downloading http://lxml.de/files/lxml-2.3.4.tgz Processing lxml-2.3.4.tgz Running lxml-2.3.4/setup.py -q bdistegg –dist-dir /tmp/easyinstall- LM0iXn/lxml-2.3.4/egg-dist-tmp-mWezRV Building lxml version 2.3.4. Building without Cython. Using build configuration of libxslt 1.1.24 unable to execute llvm-gcc-4.2: No such file or directory error: Setup script exited with error: command ‘llvm-gcc-4.2’ failed with exit status 1 and for numpy… Searching for numpy Best match: numpy 1.5.1 Adding numpy 1.5.1 to easy-install.pth file Using /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python Processing dependencies for numpy Finished processing dependencies for numpy darren-lennards-imac-g5:~ lennardfamily$
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 15:24:33): Oh, this means you don’t have Xcode. Sorry, I completely forgot to mention, that it is a prerequisite for the procedure (and most things open source). With SL, Xcode was an optional install provided on the system disc. I don’t know how is it with Lion.
  • Darren (2012-04-19 15:51:29): aha - just installing Xcode now. will update later!
  • Darren (2012-04-19 16:10:58): hihi - well Xcode now installed (my bad for forgetting), and the same scripts returned as in the post at 15:10 no idea now. Searching for lxml Reading http://pypi.python.org/simple/lxml/ Reading http://codespeak.net/lxml Best match: lxml 2.3.4 Downloading http://lxml.de/files/lxml-2.3.4.tgz Processing lxml-2.3.4.tgz Running lxml-2.3.4/setup.py -q bdistegg –dist-dir /tmp/easyinstall-2JlvMW/lxml-2.3.4/egg-dist-tmp-lgecrG Building lxml version 2.3.4. Building without Cython. Using build configuration of libxslt 1.1.24 unable to execute llvm-gcc-4.2: No such file or directory error: Setup script exited with error: command ‘llvm- gcc-4.2’ failed with exit status 1 darren-lennards-imac-g5:~ lennardfamily$ sudo easy_install numpy Searching for numpy Best match: numpy 1.5.1 numpy 1.5.1 is already the active version in easy- install.pth Using /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python Processing dependencies for numpy Finished processing dependencies for numpy darren-lennards-imac-g5:~ lennardfamily$
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 16:11:44): Did you restart Terminal.app after installing Xcode?
  • Darren (2012-04-19 16:34:46): yup. still get stuck on that same error "unable to execute llvm-gcc-4.2: No such file or directory error: Setup script exited with error: command ‘llvm-gcc-4.2’ failed with exit status 1"
  • Remigiusz ‘lRem’ Modrzejewski (2012-04-19 16:36:46): Meh, you need to find some programmer who already switched to Lion. Should not be that hard, but unfortunately I’m not a one.
  • Darren (2012-04-19 16:39:58): ok - thx for all the help though.
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