Am 09.01.2012 13:16, schrieb Christian Maeder: > I cannot answer this, but our code also compiles with ghc-7.2.2 using a > lower context-stack (of 26). Apologies, I've just re-checked and noticed that our code changed and needs consistently -fcontext-stack=26 for ghc-7.2.2 and ghc-7.0.4 (and ghc-7.0.2). C.