trac-admin initenv doesn't work with 0.7-rc1 (for me)

[keir@…]

I get a rather unhelpful error when I set up a new trac install when I've already created a directory for the trac data. Perhaps trap this and make it more explicit? I solved the problem by deleting the directory /home/keir/tmp/trac-install, but it took me several minutes to notice that the real error was way up top.

$ trac-admin /home/keir/tmp/trac-install initenv
Creating a new Trac environment at /home/keir/tmp/trac-install

Trac will first ask a few questions about your environment 
in order to initalize and prepare the project database.

 Please enter the name of your project.
 This name will be used in page titles and descriptions.

Project Name [My Project]> 

 Please specify the absolute path to the project Subversion repository.
 Repository must be local, and trac-admin requires read+write
 permission to initialize the Trac database.

Path to repository [/var/svn/test]> /home/keir/svn/

 Please enter location of Trac page templates.
 Default is the location of the site-wide templatesinstalled with Trac.

Templates directory [/usr/local/share/trac/templates]> 
Creating and Initializing Project
Failed to create environment. [Errno 17] File exists: '/home/keir/tmp/trac-insta
ll'
Failed to initialize database. 1
Traceback (most recent call last):
  File "/usr/local/bin/trac-admin", line 913, in ?
    main()
  File "/usr/local/bin/trac-admin", line 902, in main
    tracadm.docmd (command)
  File "/usr/local/bin/trac-admin", line 63, in docmd
    self.onecmd(cmd)
  File "/usr/lib/python2.3/cmd.py", line 210, in onecmd
    return func(arg)
  File "/usr/local/bin/trac-admin", line 491, in do_initenv
    if cnx:
UnboundLocalError: local variable 'cnx' referenced before assignment

[daniel]

trac-admin should break after the first exception.

[Jonas Borgström]

Failed to create environment. [Errno 17] File exists: '/home/keir/tmp/trac-install'

Is the real problem. trac-admin refuses to create an environment if the target directory already exists. Remove the directory or use another path.

The traceback is printed because trac-admin failed to handle the exception raised by the first problem.

Fixed in [523].