ConfigurationOfGrease has features that old versions of Metacello don't understand

The latest ConfigurationOfGrease here http://smalltalkhub.com/#!/~Seaside/MetacelloConfigurations

Has features that the version of Metacello that shipped with Pharo 1.4 ( and earlier)  cannot utilize/recognize.  

The Metacello that ships in Pharo 1.4 does not process these guys correctly:

spec for: #(#squeak #'pharo1.x') do:[bla].

and instead skips over them.  

So when loading Grease you only get the Core stuff and not the Pharo specific stuff.  


I'm going to make the current ConfigurationOfGrease load the up-to-date Metacello before loading itself, but it may be nice to have Metacello detect that kind of error out of the box.




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