Poetry 0.12.2 installer doesn't modify PATH or install required jsonschema

• I am on the latest Poetry version.
• I have searched the issues of this repo and believe that this is not a duplicate.
• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: macOS 10.13.4 / Docker (FROM python:3.6.5)
• Poetry version: 0.12.2
• Link of a Gist with the contents of your pyproject.toml file: N/A

Issue

When performing a fresh install using get-poetry.py $HOME/.poetry/bin doesn’t get added to the PATH like in previous releases.

Secondly, after running poetry self:update (or a fresh install using the get-poetry.py) poetry crashes with any command.

[AttributeError]
module ‘jsonschema’ has no attribute ‘Draft7Validator’

run <args> (<args>)…

I had to update jsonschema manually to get it to work.

pip install --upgrade jsonschema --pre

[sdispater]

Poetry will not be available in the current shell after installation you have to execute:

source $HOME/.poetry/env

For the jsonchema problem, you best bet is to uninstall the currently installed Poetry version, especially if you come from 0.11.5, and reinstall it using get-poetry.py.

[jordanhamill]

Building a docker image doesn’t use a single shell instance across RUN commands so the $HOME/.poetry/env wont work, nor will RUN bash -c "EXPORT PATH='/root/.poetry/bin:$PATH'.

I’m happy with the work around of explicitly modifying the PATH but that would indicate that the installer isn’t doing what it says it is doing in all scenarios. I haven’t dug through the difference between the installers but I’m curious as to why it worked pre 0.12.0. It seems like a regression as the change log doesn’t mention this being intentional.