Module path error when instantiating TimeTravel

[thirtythreeforty]

I would love to use this package, but I just can't get it to work. I've installed it with pip3 install time_travel and I have version 1.1.0. Unfortunately, the magic extensible patchers don't seem to work for me; I get strange errors related to the pkg_resources lookup. See below where I examine the failure in the debugger:

[ghilliard@farregard ~]$ ipython3
Python 3.6.5 (default, Apr  1 2018, 05:46:30) 
Type "copyright", "credits" or "license" for more information.

IPython 5.5.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: %pdb
Automatic pdb calling has been turned ON

In [2]: from time_travel import TimeTravel

In [3]: tt = TimeTravel()
---------------------------------------------------------------------------
ModuleNotFoundError                       Traceback (most recent call last)
<ipython-input-3-3051fe43b841> in <module>()
----> 1 tt = TimeTravel()

/home/ghilliard/.local/lib/python3.6/site-packages/time_travel/time_travel.py in __init__(self, start_time, **kwargs)
     24         for patcher in pkg_resources.iter_entry_points(
     25                 group='time_travel.patchers'):
---> 26             patches.append(patcher.load())
     27 
     28         self.patches = [patcher(clock=self.clock, event_pool=self.event_pool,

/home/ghilliard/.local/lib/python3.6/site-packages/pkg_resources/__init__.py in load(self, require, *args, **kwargs)
   2319         if require:
   2320             self.require(*args, **kwargs)
-> 2321         return self.resolve()
   2322 
   2323     def resolve(self):

/home/ghilliard/.local/lib/python3.6/site-packages/pkg_resources/__init__.py in resolve(self)
   2325         Resolve the entry point from its module and attrs.
   2326         """
-> 2327         module = __import__(self.module_name, fromlist=['__name__'], level=0)
   2328         try:
   2329             return functools.reduce(getattr, self.attrs, module)

ModuleNotFoundError: No module named 'src'
> /home/ghilliard/.local/lib/python3.6/site-packages/pkg_resources/__init__.py(2327)resolve()
   2325         Resolve the entry point from its module and attrs.
   2326         """
-> 2327         module = __import__(self.module_name, fromlist=['__name__'], level=0)
   2328         try:
   2329             return functools.reduce(getattr, self.attrs, module)

ipdb> ^D


In [4]: import pkg_resources

In [5]: list(pkg_resources.iter_entry_points(group='time_travel.patchers'))
Out[5]: 
[EntryPoint.parse('datetime_patcher = src.time_travel.patchers.datetime_patcher:DatetimePatcher'),
 EntryPoint.parse('select_patcher = src.time_travel.patchers.select_patcher:SelectPatcher'),
 EntryPoint.parse('time_patcher = src.time_travel.patchers.time_patcher:TimePatcher')]

It looks like the src... module paths are only valid in the source tree. A cursory examination of the wheel package shows there is no such path in the distribution. The current unit tests don't catch this because they all run relative to the source tree, where the path does exist.

[snudler6]

Thank you very much for the bug.
I'll try to sit on it in the upcoming days to solve it

[thirtythreeforty]

Thank you! I will let you know if I have any more trouble.

[snudler6]

No problem.
I'll finish the deploy PR, I've just pushed, and I'll release a new version to PyPI soon :)

[snudler6]

At last succeed in pushing a new version to PyPI (should be easier next time around).
You can use it (v1.1.2) now 😄