Is USE_REPORT_PRELUDE still useful?

Malcolm Wallace malcolm.wallace at
Wed Oct 29 09:18:29 UTC 2014

On 29 Oct 2014, at 00:24, David Feuer wrote:

> A lot of code in GHC.List and perhaps elsewhere compiles differently depending on whether USE_REPORT_PRELUDE is defined. Not all code differing from the Prelude implementation. Furthermore, I don't know to what extent, if any, such code actually works these days. Some of it certainly was not usable for *years* because GHC.List did not import GHC.Num.

I'm not completely certain, but I have a vague feeling that the Haskell Report appendices that define the standard libraries might be auto-generated (LaTeX/HTML/etc) from the base library sources, and might use these #ifdefs to get the right version of the code.


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