Which SCM for GNU/Smalltalk?

I have been exploring different source code management tools for Smalltalk dialects, and as Pharo has Monticello and Metacello, VisualWorks has Parcels, and VisualAge uses Envy/Developer.

Which source code management tools is used primarily in GNU/Smalltalk for development of user projects? (not the development of GST itself)

Solution

GNU Smalltalk boils down to plain files as most of the other languages do, you are free to use any versioning system that works with files. Like git, hg, svn, cvs and more

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