simple pictures about GHC development flow

Hi devs, For myself and new contributors, I drew overview pictures about GHC development flow. GHC development flow http://takenobu-hs.github.io/downloads/ghc_development_flow.pdf https://github.com/takenobu-hs/ghc-development-flow If I misunderstood something, please teach me. I'll correct or remove them. Regards, Takenobu