I've installed +AIDE - Android Java IDE on my Transformer and loaded up the code for +aCal and it all looks quite good, except for incorrectly finding 2 classes of error (it finds 8 errors in total - 6 of "Unknown method 'result' of 'void'" and 2 of "These types are not compatible: 'null' : 'long'").

Unfortunately I can't see a way to build it despite the 'errors', or any kind of configuration that would let me downgrade the 'errors' to some less severe grumble.

All in all I guess it's pretty impressive that a fairly sizable project like aCal should get this close...

If anyone can tell me where the source code for AIDE is, it would be great to get further involved in the project. I wonder if it is self-hosted :-)