fix: pin virtualenv version to 20.20.0

[gnufede]

Virtualenv dropped support for Python 2.7, so we need to pin this requirement in order to keep creating 2.7 virtualenvs

[P403n1x87]

Awesome find! Should we perhaps make this more general and pin all dependencies?

[brettlangdon]

Awesome find! Should we perhaps make this more general and pin all dependencies?

I'd prefer we not, same as our other packages, we should only set minimum required versions....

in fact for this, we could probably just do virtualenv<=20.20.0 to avoid upgrading someones own version of virtualenv.

[P403n1x87]

IMO we should install riot in its isolated environment as a stand-alone tool (e.g. with pipx) and pin all dependencies. I don't think that we would ever have the need to "inject" riot in other environments.

[gnufede]

we just need a changelog entry, otherwise lgtm

Should it be a fix entry? or what kind?

[brettlangdon]

IMO we should install riot in its isolated environment as a stand-alone tool (e.g. with pipx) and pin all dependencies. I don't think that we would ever have the need to "inject" riot in other environments.

We aren't the only users of riot though. so instead would be better to be as open/permissive on dependencies as possible.

If we want we can/should have a pipx/pip-compile lock file for riot where we install it in our CI environment?

[brettlangdon]

@P403n1x87 we can probably handle as a follow-up, since this fix vs changing how riot defines dependencies can be separated. wdyt?

[P403n1x87]

@P403n1x87 we can probably handle as a follow-up, since this fix vs changing how riot defines dependencies can be separated. wdyt?

👍 yep, that's fine by me.