(GHC newbie alert -- is this the right mailing list for these kind of questions?)
I"m writing some code to figure out all the instances of particular type-classes and after exploring a lot of options (hlint, haskell-src-exts, annotations, doctests, etc), I realized that the compiler had already figured it out and written it to disk for me! More digging led me to https://www.stackage.org/haddock/lts-9.0/ghc-8.0.2/LoadIface.html#v:loadSrcInterface after which I got stuck. How does one call this function? Specifically: * What is SDoc and how to construct a reasonable value for this argument? * IsBootInterface would mostly be False, right? * What does `Maybe FastString` represent and how does one construct it? * Finally how does one evaluate the resulting monadic action to get access to the underlying `ModIface`? -- Saurabh.
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