Until diagrams-0.7 and my toy-* libraries are published to hackage, this repository requires the HEAD versions of those repositories. The easiest way to get these dependencies is using cabal-meta with diagrams-sources and toy-sources.
dist/buid/ghcdi/ghcdi in the root directory. Then, write a file with the extension
.hse, for "Haskell Expression" to the same directory. This change will be detected, and the expression will be rendered via diagrams.
"src/ActiveHs/Simple.hs" is from ActiveHs by Péter Diviánszky. This is included because you can't use an application as a library!