'graphviz.graphviz.GraphvizMacro' object has no attribute 'cmd_path'

[clive]

I am using Trac-0.9.6.

After following the installation instructions and using GraphvizPlugin checked out from the repository, I get the following error:

Trac detected an internal error: 
'graphviz.graphviz.GraphvizMacro' object has no attribute 'cmd_path'

Following this error is this traceback:

Python traceback
Traceback (most recent call last):
  File "/usr/local/lib/python2.4/site-packages/trac/web/modpython_frontend.py", line 206, in handler
    dispatch_request(mpr.path_info, mpr, env)
  File "/usr/local/lib/python2.4/site-packages/trac/web/main.py", line 139, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/local/lib/python2.4/site-packages/trac/web/main.py", line 107, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/local/lib/python2.4/site-packages/TracTags-0.4-py2.4.egg/tractags/web_ui.py", line 64, in process_request
  File "/usr/local/lib/python2.4/site-packages/trac/wiki/web_ui.py", line 92, in process_request
    self._render_editor(req, db, page, preview=True)
  File "/usr/local/lib/python2.4/site-packages/trac/wiki/web_ui.py", line 311, in _render_editor
    info['page_html'] = wiki_to_html(page.text, self.env, req, db)
  File "/usr/local/lib/python2.4/site-packages/trac/wiki/formatter.py", line 751, in wiki_to_html
    Formatter(env, req, absurls, db).format(wikitext, out, escape_newlines)
  File "/usr/local/lib/python2.4/site-packages/trac/wiki/formatter.py", line 577, in format
    self.handle_code_block(line)
  File "/usr/local/lib/python2.4/site-packages/trac/wiki/formatter.py", line 554, in handle_code_block
    self.code_processor = WikiProcessor(self.env, name)
  File "/usr/local/lib/python2.4/site-packages/trac/wiki/formatter.py", line 62, in __init__
    if self.name in list(macro_provider.get_macros()):
  File "build/bdist.freebsd-5.3-RELEASE-i386/egg/graphviz/graphviz.py", line 66, in get_macros
  File "build/bdist.freebsd-5.3-RELEASE-i386/egg/graphviz/graphviz.py", line 307, in load_config
  File "/usr/local/lib/python2.4/site-packages/trac/core.py", line 165, in __getattr__
    raise AttributeError, "'%s' object has no attribute '%s'" % (cls, name)
AttributeError: 'graphviz.graphviz.GraphvizMacro' object has no attribute 'cmd_path'

my trac.ini has a graphviz section as folows:

[graphviz]
cmd_path = /usr/local/bin
cache_dir = /home/usrsrc/trac/projects/newt/graphviz
png_antialias = true
default_graph_fontname = "Andale Mono"
default_graph_fontsize = 10

I have tried with and without the cmd_path entry. I have dot installed with the executable at /usr/local/bin/dot.

[Peter Kropf]

What platform are you running on? Linux? FreeBSD? Something else? Also, what distribution?

[clive]

FreeBSD 5.3 / Python 2.4

[clive]

Another note here. If I take out the graphviz rendering code, I get the same error but with my TracNav plugin, TracNav says: 'graphviz.graphviz.GraphvizMacro' object has no attribute 'cmd_path'

I have to completely uninstall/disable graphviz to get my other plugins to work again.

[Peter Kropf]

(In [1229]) Added freebsd5 as a known platform to GraphvizMacro.cmd_paths. Initialized self.cmd_path to None in load_config(). References #679.

[Peter Kropf]

Can you check the branches/v0.6 directory tree and try the version that's there? I've fixed an obvious bug and hopefully resolved your problem. Unfortunately, I don't currently have access to a FreeBSD 5.x system to use for testing. If this fixes your problem, I'll update the 0.9 release tree with the changes.

[anonymous]

I tried the v0.6 branch, and now get different errors:

Graphviz macro processor has detected an error. Please fix the problem before continuing. 
The rsvg program is set to <b>/usr/local/bin/rsvg</b> but that path does not exist.

After getting the above, I added the following line to the graphviz section of my trac.ini file:

processor = dot

but even after that addition, the rsvg error still remains.

[clive]

Turned off anti-aliasing. It works now. I think the rsvg issue is beyond the scope of this bug report. Thank you.