On: Design Principles Behind Smalltalk (1981)

[mucholove]

Necessity is the mother of invention! If the demise of the Mac / Cocoa API's is nigh—expect there to be some work on it.

This guy is doing some interesting work: https://mulle-objc.github.io

One more factor: my guess is that GNUstep picked the LGPL—which although more permissive than the GPL—turns away the money / status seeking Mac folks.

[cxr → mucholove]

GNUstep being LGPL has as much adverse impact on developers as Apple's implementation being proprietary. (I.e., none.) It's the _LGPL_ after all, not the GPL.

GNUstep has also moved to GitHub and seems to favor the the MIT license nowadays where possible (e.g., libobjc2)[1][2].

1. https://github.com/gnustep/libobjc2

2. http://etoileos.com/dev/licensing/