Ideally I want one folder of solids (to minimise code duplication), for use in different combinations across pipelines/repos with each repo having a different virtual environment. Is there a way to achieve this with workspace.yaml?

Hi George - you can import solids from other modules/folders and share them in different pipelines in different virtual environments, so this should be no problem. It would work similarly to this example here: https://docs.dagster.io/concepts/repositories-workspaces/workspaces#multiple-python-environments