Add Rose and Cylc to testing dependencies for RTW

[ehogan]

Description

• Closes #3623

• Link to documentation:

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[bouweandela]

Does the workflow actually use the conda environment that cylc is in for running the recipes? I had the impression that it was using containers? If that is the case, there doesn't seem much point in adding cylc et al to the main ESMValTool environment, we could just have a small separate environment with cylc et al for running the recipe test workflow.

[valeriupredoi]

AFAIK only CEDA/JASMIN runs use containers (sifs), but MetO use the buildable environment

[ehogan]

Does the workflow actually use the conda environment that cylc is in for running the recipes? I had the impression that it was using containers? If that is the case, there doesn't seem much point in adding cylc et al to the main ESMValTool environment, we could just have a small separate environment with cylc et al for running the recipe test workflow.

No, as V says we use a container on JASMIN and we use our community (Conda) environment at the MO.

However, I would argue it makes sense for Rose and Cylc to be included in the test dependencies (that was what I was aiming for in the changes, and apologies if I didn't do that correctly!). I imagine a developer might get frustrated if they choose to install the test dependencies, but they don't get an environment that enables them to run the RTW 🤔

[bouweandela]

However, I would argue it makes sense for Rose and Cylc to be included in the test dependencies (that was what I was aiming for in the changes, and apologies if I didn't do that correctly!). I imagine a developer might get frustrated if they choose to install the test dependencies, but they don't get an environment that enables them to run the RTW 🤔

OK, let's add them then.