pipdeptree looks like a good package and utility to keep on our system. Here is a quick sample output (many lines are removed):
$ pipdeptree pies2overrides==2.0.0/g - ipaddress [installed: 1.0.6] enum34==0.9.19 urtimer==0.5.1 - distribute - urwid [installed: 1.1.1] isort==2.5.0 - pies [required: >=2.0.0, installed: 2.0.0] - pies2overrides [installed: 2.0.0] - ipaddress [installed: 1.0.6] - enum34 [installed: 0.9.19] - natsort [required: >=3.0.0, installed: 3.0.2] gdata==2.0.14 googlecl==0.9.13 - gdata [required: >=1.2.4, installed: 2.0.14]
You can clearly see what are depended by which packages and the installed versions plus requirement comparisons or conditions. It can also work with virtualenv.
It’s a new package, only version 0.2 as of writing, it might be helpful to troubleshoot dependency issue, not that I am aware of, but it provides a clearer view of the relationships between packages. In other words: how messy is your Python site directories.
This makes me want to have something like emerge --depclean -v <pkg> or pip, some options for safe deep clean. With pipdeptree, it’s like having manual -v. You could check the tree by yourself.
But, most likely, it’s you see the ImportError and either uninstalling more packages or re-installing the ones you just uninstalled. Nonetheless, I still feel Python’s package management is totally fine, at least much better than other I currently use on my system if I don’t rely on Gentoo’s managements.
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