Setuptools thinks a package name with a dash in it is a name and version when checking for a dependency locally.
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Description
Originally reported by: nicksloan (Bitbucket: nicksloan, GitHub: nicksloan)
See this gist: https://gist.github.com/nicksloan/48dead9a1fcb72d356c9
The install_requires are processed in reverse order, so it encounters requests-oauthlib first, it installs that, then when it encounters requests later on it does a local search and recognizes requests-oauthlib as if were requests==oauthlib-0.5. It is apparently reading the package name up to the first dash only, and assuming the rest is the version.
pip install . does not have the same problem.
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Research direction
Reproduce the dependency order from the linked gist, with requests-oauthlib before requests, and inspect Setuptools' local dependency checking and name/version parsing. Done means a dashed package is not treated as the requested package with the remainder as its version; verify the reported install scenario no longer misidentifies the dependency.
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Assessment
- Tech stack
- python
- Domain
- build-system
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100