#16078: Hide -Weverything warnings for GHCi internals -------------------------------------+------------------------------------- Reporter: crockeea | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: GHCi | Version: 8.6.2 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: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RolandSenn): The first two warning messages are related to GHCi internal processing, however not the third one! The third one can be avoided by mentioning ''Bar.hs'' on the command line. eg: `stack ghci Main.hs Bar.hs --ghc-options -Weverything` -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16078#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler

#16078: Hide -Weverything warnings for GHCi internals -------------------------------------+------------------------------------- Reporter: crockeea | Owner: (none) Type: bug | Status: new Priority: low | Milestone: Component: GHCi | Version: 8.7 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: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by crockeea): * version: 8.6.2 => 8.7 Old description:

Consider

Bar.hs {{{ module Bar where }}}

Main.hs {{{ import Bar

main :: IO () main = print "" }}}

`stack ghci Main.hs --ghc-options -Weverything` produces

{{{ ... GHCi, version 8.6.2: http://www.haskell.org/ghc/ :? for help

<interactive>:1:1: warning: [-Wmissing-local-signatures] Polymorphic local binding with no type signature: _compileParsedExpr :: forall a. GHC.Types.IO a -> GHC.Types.IO a

<interactive>:1:1: warning: [-Wmissing-import-lists] The module `Prelude' does not have an explicit import list Loaded GHCi configuration from C:\Users\ericcro\Desktop\VPC-Key- Distribution\src\.ghci

<no location info>: warning: [-Wmissing-home-modules] Modules are not listed in command line but needed for compilation: Bar [1 of 2] Compiling Bar ( Bar.hs, interpreted ) ... }}}

Those three errors have nothing to do with my code, and seem to be related to the internals of how GHCi works. It would be nice to hide all three.

New description: Consider Bar.hs {{{ module Bar where }}} Main.hs {{{ import Bar main :: IO () main = print "" }}} `ghci Main.hs -Weverything` produces {{{ ... GHCi, version 8.7.20190113: http://www.haskell.org/ghc/ :? for help <interactive>:1:1: warning: [-Wmissing-local-signatures] Polymorphic local binding with no type signature: _compileParsedExpr :: forall a. GHC.Types.IO a -> GHC.Types.IO a <interactive>:1:1: warning: [-Wmissing-import-lists] The module `Prelude' does not have an explicit import list <no location info>: warning: [-Wmissing-home-modules] Modules are not listed in command line but needed for compilation: Bar [1 of 2] Compiling Bar ( Bar.hs, interpreted ) ... }}} Those three errors have nothing to do with my code, and seem to be related to the internals of how GHCi works. It would be nice to hide all three. -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16078#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler