gistfile1.txt

Scanning posts......done!
.  render_listings:output/listings/index.html
########################################
TaskError - taskid:render_listings:output/listings/index.html
PythonAction Error
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/doit/action.py", line 383, in execute
    returned_value = self.py_callable(*self.args, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/nikola/utils.py", line 882, in unlessLink
    action(target)
  File "/usr/local/lib/python3.4/dist-packages/nikola/filters.py", line 166, in html_tidy_nowrap
    return _html_tidy_runner(infile, r"-quiet --show-info no --show-warnings no -utf8 -indent --indent-attributes no --sort-attributes alpha --wrap 0 --wrap-sections no --drop-empty-elements no --tidy-mark no -modify %1")
  File "/usr/local/lib/python3.4/dist-packages/nikola/filters.py", line 188, in _html_tidy_runner
    status = runinplace(r"tidy5 " + options, infile)
  File "/usr/local/lib/python3.4/dist-packages/nikola/filters.py", line 116, in runinplace
    subprocess.check_call(command)
  File "/usr/lib/python3.4/subprocess.py", line 556, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/usr/lib/python3.4/subprocess.py", line 537, in call
    with Popen(*popenargs, **kwargs) as p:
  File "/usr/lib/python3.4/subprocess.py", line 859, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.4/subprocess.py", line 1457, in _execute_child
    raise child_exception_type(errno_num, err_msg)
FileNotFoundError: [Errno 2] No such file or directory: 'tidy5'