[Pharo-users] conditional loading of packages in BaselineOf/ConfigurationOf

Hi, is it possible to specify _natively_ (in the BaselineOf spec itself) a conditional loading of packages? Example usage: I have package with extensions for Calypso, but Calypso is not always loaded, so I want to load the package only if Calypso is present. The ugly way (because it's a hack and you cannot see the condition by looking at the project spec): self environment at: #ClyBrowser ifPresent: [ spec package: 'My-Calypso-Extensions'. ]. The imagined way (or something along the lines): spec package: 'My-Calypso-Extensions' with: [ spec condition: [ self environment includesKey: #ClyBrowser ] ] Is this possible? Or is there some other recommended way how to approach this? Thanks, Peter