This issue seems to have started in #20233...
Issue 6461: [BUG]: Bogus package creation
http://code.google.com/p/pharo/issues/detail?id=64612.0 #20233 (does not happen in #20232*).
To reproduce:
Gofer it
url: '
http://seaside.gemstone.com/ss/metacello'; package: 'ConfigurationOfMetacello';
load.
(Smalltalk at: #ConfigurationOfMetacello) project stableVersion load: 'batch'.
If you open an MC browser, you will see that a "Metacello" package is listed and dirty, but shouldn't be there at all. Metacello is packaged in Metacello-* packages, which you will see further down in the list, and clean
* For it to work in #20232, you must add (from #20233) MCCacheRepository class>>default
^ self uniqueInstance
Cheers,
Sean