oh, I almost forgot something fairly important… my mercurial I installed in my home directory still works, and X11 apps I installed via fink (like gnucash and gnumeric) still work in Snow Leopard without having to recompile them. I suspect as long as the binaries you have were compiled with an x86 target at all, it will probably still run without recompiling, just in 32-bit mode.

I updated my macbook to Snow Leopard tonight. I went to run my little C-type sizeof program, and found out that I hadn’t recompiled it since I was running on a PPC. rosetta doesn’t install by default in Snow Leopard. so I went to re-compile it only to find out gcc had gone missing. all I had to do was install the new XCode on the Snow Leopard DVD, and then download the iphone SDK 3.