--no-use-pep517 needed for pip install -U matrix-synapse[all]

[echto]

Description

Tried up upgrade synapse and install fails.

Command "/home/matrix/synapse/env/bin/python3 /home/matrix/synapse/env/lib/python3.6/site-packages/pip/_vendor/pep517/_in_process.py get_requires_for_build_wheel /tmp/tmpcn297ioh" failed with error code 1 in /tmp/pip-install-4d7uxxg9/matrix-synapse

Steps to reproduce

• list the steps
• that reproduce the bug
• using hyphens as bullet points

pip install -U matrix-synapse[all]

Install fails with error message.

Version information

What version of Synapse is running?
You can find the Synapse version by inspecting the server headers (replace matrix.org with
your own homeserver domain):
$ curl -v https://matrix.org/_matrix/client/versions 2>&1 | grep "Server:"
-->

• Version: 0.99.1.1

• Install method:

pip install

• Platform:

Gentoo 5.0.0-gentoo 1920 Threadripper

-Solution: Add --no-use-pep517 to the upgrade command: pip install -U matrix-synapse[all] --no-use-pep517

[richvdh]

your bug report is quite hard to read - any chance you could take the time to make it more understandable?

Please could you also take the time to explain what this flag does, and why it has become necessary? Does it not rely on a particular version of pip which most users will not have?

[richvdh]

possibly the same as #4860? Closing for now as it's far from clear what the problem is.

[richvdh]

I guess it's related to #5096