OS X install error

[duncangeere]

When installing vpype on OS X I get the following error:

 Collecting click>=7.1 (from vpype)
  Could not fetch URL https://pypi.python.org/simple/click/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:661) - skipping
  Could not find a version that satisfies the requirement click>=7.1 (from vpype) (from versions: )
No matching distribution found for click>=7.1 (from vpype)

Is this my error, or a bug somewhere?

[abey79]

Hello @duncangeere, what's your python and pip version? Can you give me the output of python --version and pip --version?

edit: from what I see online, upgrading pip might solve the problem: pip install --upgrade pip

[duncangeere]

@abey79 Thanks! I'm on Python 2.7.1.13 and pip 9.0.1.

Upgrading pip gives me a new exciting error!

Cache entry deserialization failed, entry ignored
Could not fetch URL https://pypi.python.org/simple/pip/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:661) - skipping
Requirement already up-to-date: pip in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages

Should I be running python3 rather than python perhaps? (I have v3.6.5 of python3)

[abey79]

Yes, python 2.7 is not going to work. So try with python3 and pip3 (I assume). 3.6 is the minimum requirement for vpype. If that's the OS base python, let's see. It's usually best to install python with, e.g., Homebrew.

[duncangeere]

Thanks for your help. It does say 3.6 in the installation instructions, so apologies, I should have checked that before filing an issue!

pip3 worked and it downloaded and installed a bunch of stuff (and running it again just gives me a load of "requirement already satisfied" messages. However, when I run ./alien.sh I get ./alien.sh: line 8: vpype: command not found. In the command line, using vpype gives me a similar error: zsh: command not found: vpype.

[abey79]

Depending on the python install, some directory has to be added to the path and I'm unsure which. The easiest would be either to install python from MacPort or Homebrew (these tool should setup the path properly) or use a virtual environment, which is always a good idea.

Here is how to do it:

python3 -m venv vpype_venv
source vpype_venv/bin/activate
pip install --upgrade pip
pip install git+https://github.com/abey79/vpype#egg=vpype

Then you should be able to run vpype. Note that if you close the terminal and want to use another one, you will need to activate the virtual environment again: source vpype_venv/bin/activate. Alternatively, you can execute vpype with the full path: vpype_venv/bin/vpype --help

[abey79]

Hey @duncangeere have you been able to sort this out?

[duncangeere]

Sorry for the delay! Got caught up in a few things. Will try this afternoon and let you know.

[duncangeere]

Actually I just tried now. Installing python from Homebrew didn't work, but the virtual environment approach worked a treat. I saw you recommended one on the install page, but didn't know how to do it so skipped that bit! May be worth adding the instructions above to that page :)

Thanks for helping me solve the problem!

[abey79]

Good news! I'm in the middle of a complete documentation overhaul. I've made sure the venv stuff is better explained now.