A few months ago I setup an Instiki wiki using Snow Leopard. It took me quite a while, as I had to work some black magic to understand which version of ruby (plus gems/rails) I was supposed to install/update.
Now I've upgraded to Lion after formatting (bad idea huh?), and I'd like a new instiki up and running. So I thought: instead of wasting another day in trial and error I might ask if someone smarter and more knowledgeable has a quick and dirty way to do it (e.g. avoiding installing xcode tools!).
p.s. Instiki is very cool http://www.instiki.org/show/HomePage, especially if you like maths. Its user-friendliness is very far from Tiddlywiki, but I think it's much cooler.
p.p.s. please feel free to retag appropriately.
EDIT As pointed out, some more info might be useful. When I try to run instiki (contained in a folder named taccuino) this is what it tells me
./Desktop/taccuino/config/../config/preinitializer.rb:20: Bundler couldn't find some gems.Did you run `bundle install`? (RuntimeError) from ./Desktop/taccuino/config/boot.rb:28:in `load' from ./Desktop/taccuino/config/boot.rb:28:in `preinitialize' from ./Desktop/taccuino/config/boot.rb:10:in `boot!' from ./Desktop/taccuino/config/boot.rb:124 from ./Desktop/taccuino/script/server:3:in `require' from ./Desktop/taccuino/script/server:3 from ./Desktop/taccuino/instiki:6:in `load' from ./Desktop/taccuino/instiki:6