Nova "./run_tests.sh" fails on Debian 6.0

[Alexey Eromenko]

In addition to "Docs: Lacking section of installing from source code" (Bug #938416),

the "./run_tests.sh" fails on Debian 6.0 host.

Unzipped Nova 11.3 "Diablo" source code..

user@xrig:~/Linstall/nova-2011.3$ ./run_tests.sh
No virtual environment found...create one? (Y/n) y
not found.
done.
Creating venv...
Traceback (most recent call last):
  File "tools/install_venv.py", line 146, in <module>
    main(sys.argv)
  File "tools/install_venv.py", line 141, in main
    create_virtualenv()
  File "tools/install_venv.py", line 92, in create_virtualenv
    run_command(['virtualenv', '-q', '--no-site-packages', VENV])
  File "tools/install_venv.py", line 57, in run_command
    proc = subprocess.Popen(cmd, cwd=ROOT, stdout=stdout)
  File "/usr/lib/python2.6/subprocess.py", line 623, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1141, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

-Technologov, 22.02.2012.

[Davanum Srinivas (DIMS) (dims-v)]

Here's what we do now. The exception information is pretty good i think. we should close this bug now

class Distro(InstallVenv):

    def check_cmd(self, cmd):
        return bool(self.run_command(['which', cmd],
                    check_exit_code=False).strip())

    def install_virtualenv(self):
        if self.check_cmd('virtualenv'):
            return

        if self.check_cmd('easy_install'):
            print 'Installing virtualenv via easy_install...',
            if self.run_command(['easy_install', 'virtualenv']):
                print 'Succeeded'
                return
            else:
                print 'Failed'

        self.die('ERROR: virtualenv not found.\n\n%s development'
                 ' requires virtualenv, please install it using your'
                 ' favorite package management tool' % self.project)