#13064: Incorrect redudant imports warning -------------------------------------+------------------------------------- Reporter: phadej | Owner: (none) Type: bug | Status: new Priority: low | Milestone: 8.8.1 Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Incorrect | Unknown/Multiple error/warning at compile-time | Test Case: Blocked By: | Blocking: Related Tickets: #15393 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): To follow up on my proposed experiment (in comment:29), I built about 143 commonly used Hackage libraries using the `wip/T13064` GHC branch. Of those 143, I noticed new warnings being emitted in 31 of them (~22%): {{{ - adjunctions-4.4 - aeson-1.4.0.0 - ansi-wl-pprint-0.6.8.2 - asn1-encoding-0.9.5 - async-2.2.1 - attoparsec-0.13.2.2 - blaze-builder-0.4.1.0 - cassava-0.5.1.0 - conduit-1.3.0.3 - cookie-0.4.4 - foundation-0.0.21 - Glob-0.9.2 - haskell-src-exts-1.20.2 - hspec-core-2.5.6 - lens-4.17 - math-functions-0.3.0.2 - memory-0.14.16 - microstache-1.0.1.1 - mono-traversable-1.0.9.0 - network-2.8.0.0 - primitive-0.6.4.0 - resourcet-1.2.1 - scientific-0.3.6.2 - tasty-1.1.0.3 - th-orphans-0.13.6 - unordered-containers-0.2.9.0 - uuid-types-1.0.3 - x509-1.7.4 - x509-store-1.6.6 - x509-system-1.6.6 - yaml-0.10.1.1 }}} I still advocate adopting this change, but it is worth noting that a non- trivial number of existing libraries will need to be updated in order to accommodate the new warnings. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13064#comment:36 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler