I think I found an answer: invoke parseStaticFlagshttp://www.haskell.org/ghc/docs/7.4.1/html/libraries/ghc/GHC.html#v:parseSta..., passing in the flags specified as if on the ghc command line. For instance: parseStaticFlags $ noLoc <$> ["-dsuppress-uniques", "-dsuppress-type-applications", "-dsuppress-idinfo"] This call must be made before a compilation gets made. I'm (now) doing it before calling runGhc for the first time. Johan: I'm working toward making a GHC back-end that maps from Core to a programmable logic architecture (similar to FPGA). -- Conal On Wed, May 1, 2013 at 3:59 PM, Johan Tibell wrote:

On Wed, May 1, 2013 at 2:13 PM, Conal Elliott wrote:

...

I'm using the GHC API to compile Haskell source code to Core. I'd like to pretty-print the result with the sort of simplifications I get with -dsuppress-type-applications, -dsuppress-uniques, etc (used in combination with -ddump-simpl on ghc's command line). How can I set these options via the GHC API? Has the answer changed since 7.4.1 (which I'm currently using)?

I'd also be interested in the answer and whatever you're working on Conal. I spend more time looking at core than I like and anything that can made that time more efficient would be great.