“Even if Thesis hadn’t copy and pasted large swathes of code from WordPress (and GPL plugins) its PHP (PHP) would still need to be under the GPL,”
Is this really true? I never thought a theme interfacing with other software using public APIs is a derivative. Is it just the GPL that sees it this way or is it the actual copyright laws too?
Yeah I don't understand this either. Is there any way to sell a closed-source piece of software which integrates with Wordpress? What's the difference from software like www.copilot.com which uses GPL software (TightVNC) at its core?
Is this really true? I never thought a theme interfacing with other software using public APIs is a derivative. Is it just the GPL that sees it this way or is it the actual copyright laws too?