Hi, Am Sonntag, den 02.11.2014, 20:10 -0500 schrieb David Feuer:
GHC.Base has a function, thenIO, that isn't used anywhere in the libraries or compiler, and isn't exported anywhere "public". But for some reason, it's listed in compiler/prelude/PrelNames.lhs, which causes a validation failure if I remove it. Is there a reason that a completely unused function is wired in? Is it a historical artifact, or an optimization that was never completed, or something else? Should I wipe it out of PrelNames, or do we want to use it for something?
I find uses in compiler/typecheck/TcRnDriver.lhs in tcUserStmt, it seems to be related to ghci’s support for IO actions. If you can rewrite that easily, then it surely can go, but there likely is a reason for it. If you find that reason, a Note would be appreciated. Greeting, Joachim -- Joachim “nomeata” Breitner mail@joachim-breitner.de • http://www.joachim-breitner.de/ Jabber: nomeata@joachim-breitner.de • GPG-Key: 0xF0FBF51F Debian Developer: nomeata@debian.org