There seem to be two gtk2hs libraries on Hackage - gtk and gtk3. Looking at the source, they seem to share the same files and have only minor differences. How are these libraries different?
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2These bind to gtk2 and gtk3 respectively. – arrowd Mar 09 '18 at 07:53
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It is not the Haskell part that is much different. The Haskell library acts as a wrapper to the gtk library. So it calls a different one. – Willem Van Onsem Mar 09 '18 at 08:32
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Seems that in Gtk2Hs, the 2 means "to", not "two" (like in GTK bindings *to* Haskell). The naming is infortunate as it leads to confusion. – liberforce Mar 09 '18 at 09:42
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As pointed out in the comments, gtk binds to GTK+ 2, and gtk3, to GTK+ 3. One place where that information shows up is in the pkg-config fields of their respective .cabal files (cf. gtk.cabal and gtk3.cabal).
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