The dependency 'lockfile' is marked as deprecated

[heirecka]

bugwarrior uses lockfile as a dependency, which says the following about itself on pypi:

Note: This package is deprecated. It is highly preferred that instead of using this code base that instead fasteners or oslo.concurrency is used instead. For any questions or comments or further help needed please email openstack-dev and prefix your email subject with [oslo][pylockfile] (for a faster response).

https://pypi.org/project/lockfile/

So it seems rather likely that it'll cause problems at some point in the future. I'm not very well versed in the python ecosystem, but I'd be willing to make my toolbox a bit more versatile and try to replace this part, if that's direction is generally acceptable.

[ryneeverett]

Thanks for pointing this out! It looks like this deprecation paragraph was written over 10 years ago, so there is a chance that those are no longer the best recommendations. The fasteners API looks like it might be comparable to that of lockfile, but it appears that filelock also has a similar api and comes from a solid maintenance organization so I'd be more in favor of filelock assuming it can do what we need.