Comment #7 on issue 346 by jeffwheeler: Cannot open files that do not already exist (Mac OS X 10.6 Case-Sensitive HFS)
http://code.google.com/p/yi-editor/issues/detail?id=346
I'm not sure if it's possible on OS X (although it should be in theory). I'd guess that you have to install GTK-OSX [1], then run $ cabal install gtk2hs-buildtools $ cabal install gtk2hs $ cabal install yi -fpango # Adds the 'pango' flag [1] http://gtk-osx.sourceforge.net/ -- Yi development mailing list yi-devel@googlegroups.com http://groups.google.com/group/yi-devel