Potential dependency conflicts between adeptrl and cloudpickle #88
Description
Hi, as shown in the following full dependency graph of adeptrl, adeptrl requires cloudpickle (>=0.5)， while the installed version of gym(0.17.1) requires cloudpickle>=1.2.0,<1.4.0.
According to Pip's “first found wins” installation strategy, cloudpickle 1.3.0 is the actually installed version.
Although the first found package version cloudpickle 1.3.0 just satisfies the later dependency constraint （cloudpickle>=1.2.0,<1.4.0), it will lead to a build failure once developers release a newer version of cloudpickle.
Dependency tree--------
adeptrl - 0.2.0
| +- absl-py(install version:0.9.0 version range:>=0.2)
| +- cloudpickle(install version:1.3.0 version range:>=0.5)
| +- docopt(install version:0.6.2 version range:>=0.6)
| +- gym(install version:0.17.1 version range:>=0.10)
| | +- cloudpickle(install version:1.3.0 version range:>=1.2.0,<1.4.0)
| | +- enum34(install version: version range:<.2,>=1.1.6)
| | +- numpy(install version:1.18.2 version range:>=1.10.4)
| | +- pyglet(install version:1.5.0 version range:>=1.4.0,<=1.5.0)
| | +- scipy(install version:1.2.3 version range:*)
| | +- six(install version:1.14.0 version range:*)
| +- numpy(install version:1.18.2 version range:>=1.14)
| +- opencv-python-headless(install version:4.1.0.25 version range:>=3.4)
| +- pyzmq(install version:19.0.0 version range:>=17.1.2)
| +- tensorboard(install version:1.14.0 version range:>=1.14)
| +- torch(install version:0.1.2.post2 version range:>=1.3.1)
| | +- pyyaml(install version:5.3.1 version range:*)
| +- torchvision(install version:0.3.0 version range:>=0.4.2)
Thanks for your attention.
Best,
Neolith