[ARIA-304] Unable to install apache-ariatosca[ssh] via PyPI

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Duplicate
• Affects Version/s: 0.1.0
• Fix Version/s: 0.2.0
• Assignee: Ran Ziv
• Reporter: Ran Ziv
• Created: 09/Jul/17 07:31
• Updated: 09/Jul/17 08:37
• Resolved: 09/Jul/17 08:37

Description

Attempting to install ARIA's ssh optional dependency via:
pip install apache-ariatosca[ssh]
will result in an error on a non-Windows machine:
ImportError: No module named _winreg

This is due to a limitation of wheel with regards to environment-marked dependencies (which results in an attempt to install a Windows-specific dependency on any platform).
See related issue ARIA-301.

This also applies for sdist installations as pip will attempt to create a wheel prior to installation.

The workaround for this is to use the no-binary pip flag, which tells it not to use wheel and thereby avoiding the limitation:
pip install apache-ariatosca[ssh] --no-binary apache-ariatosca

Issue Links

• relates to: ARIA-301 Environment-marked dependencies are installed regardless of environment when installing from wheel