I know this is not technically a Pharo question, but I'm in China on my honeymoon and can't access the Metacello Google group! There was a pattern in pre-BaselineOf Metacello where one would define dependencies loosely in the #baselineXyz:, and then pin them to a specific version in the #versionAbc:. For example: baseline100: spec ... project: 'BabyMock' with: [ spec className: #ConfigurationOfBabyMock; versionString: #'stable'; repository: 'http://smalltalkhub.com/mc/zeroflag/BabyMock/main/' ] ... and then: version10: spec ... spec project: 'BabyMock' with: '1.2' ... How does one handle this sort of thing with #baseline:import:? This is what I came up with: version10: spec ... baseline: 'BabyPhexample' with: [ spec repository: 'github://seandenigris/Baby-Phexample:INSERT-SHA-HERE/repository' ]; import: 'BabyPhexample'. spec project: 'BabyMock' with: '1.2' ... But I got this error from the last line: MessageNotUnderstood: receiver of "fetchUsing:" is nil Thanks. ----- Cheers, Sean -- View this message in context: http://forum.world.st/BaselineOf-s-and-Loose-Dependencies-tp4885749.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.