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Happy Haskell Hacking for editors. DEPRECATED

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EXCEPTION: browse: module ‘SimpleJSON’ is defined in multiple files

joseedil opened this issue · comments

commented

I'm getting this exceptions on both Ubuntu 17.04 with Emacs 24.5.1 and MacOS Sierra with Emacs 25.2.

EXCEPTION: browse:
           module ‘SimpleJSON’ is defined in multiple files: /tmp/ghc-mod23992/SimpleJSON17345751981973594324.hs
                                                             SimpleJSON.hs

Here is the output of ghc-debug on Ubuntu.

Path: check if you are using intended programs.
	  ghc.el path: /home/edil/.emacs.d/elpa/ghc-5.7.0.0/ghc.el
	 ghc-mod path: /home/edil/.cabal/bin/ghc-mod
	     ghc path: /opt/ghc/ghc-8.0.2/bin/ghc

Version: all GHC versions must be the same.
	  ghc.el version 5.7.0.0
	 ghc-mod version 5.7.0.0 compiled by GHC 8.0.2
	The Glorious Glasgow Haskell Compilation System, version 8.0.2

Environment variables:
	PATH=/opt/ghc/ghc-8.0.2/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/lib/jvm/java-8-oracle/bin:/usr/lib/jvm/java-8-oracle/db/bin:/usr/lib/jvm/java-8-oracle/jre/bin:/home/edil/development/eclipse/modeling-neon/eclipse/:/home/edil/.cabal/bin/:/opt/ghc/ghc-8.0.2/bin/

The result of "ghc-mod debug":
Version:              ghc-mod-5.7.0.0
Library GHC Version:  8.0.2
System GHC Version:   8.0.2
Root directory:       /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5
Current directory:    /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5
GHC Package flags:
    -i/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5
    -i/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5
    -global-package-db -no-user-package-db -package-db
    /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/.cabal-sandbox/x86_64-linux-ghc-8.0.2-packages.conf.d
    -Wall
GHC System libraries: /opt/ghc/ghc-8.0.2/lib/ghc-8.0.2

I get this errors every time I start writing a new function and they keep popping whenever I add something. They look to be related to #609.

Thought they were caused by having buffers from other projects, but it happens even with a fresh emacs. I'm not using Stack, but Cabal.

This is what ghc-mod debug gives me.

edil:chapt5$ ghc-mod debug

Version:              ghc-mod-5.7.0.0
Library GHC Version:  8.0.2
System GHC Version:   8.0.2
Root directory:       /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5
Current directory:    /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5
GHC Package flags:
    -hide-all-packages -no-user-package-db -package-db
    /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/.cabal-sandbox/x86_64-linux-ghc-8.0.2-packages.conf.d
    -package-id base-4.9.1.0
GHC System libraries: /opt/ghc/ghc-8.0.2/lib/ghc-8.0.2
cabal-install Version: 1.24.0.2
Cabal Library Versions:
    Cabal-1.24.2.0
Cabal file:            Just "/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/chapt5.cabal"
Project:               CabalProject
Cabal entrypoints:
    Setup.hs
        Main (/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/Setup.hs)
    exe:chapt5
        Main (/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/Main.hs)
Cabal components:
    Setup.hs
        Main (/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/Setup.hs)
    exe:chapt5
        Main (/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/Main.hs)
            PutJSON
            SimpleJSON
        PutJSON (/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/PutJSON.hs)
            SimpleJSON
        SimpleJSON (/home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/SimpleJSON.hs)
GHC Cabal options:
    Setup.hs
    exe:chapt5
        -fbuilding-cabal-package -O -outputdir dist/build/chapt5/chapt5-tmp
        -odir dist/build/chapt5/chapt5-tmp -hidir
        dist/build/chapt5/chapt5-tmp -stubdir dist/build/chapt5/chapt5-tmp
        -i -idist/build/chapt5/chapt5-tmp -i. -idist/build/autogen
        -Idist/build/autogen -Idist/build/chapt5/chapt5-tmp -optP-include
        -optPdist/build/autogen/cabal_macros.h -hide-all-packages
        -no-user-package-db -package-db
        /home/edil/development/haskell/haskell-learning/real_world_haskell/chapt5/.cabal-sandbox/x86_64-linux-ghc-8.0.2-packages.conf.d
        -package-id base-4.9.1.0 -XHaskell2010
GHC search path options:
    Setup.hs
    exe:chapt5
        -i -idist/build/chapt5/chapt5-tmp -i. -idist/build/autogen
        -Idist/build/autogen -Idist/build/chapt5/chapt5-tmp -optP-include
        -optPdist/build/autogen/cabal_macros.h

By the way, the project compiles and the executable file seems to be working.

commented

0497267 should alleviate this somewhat. It fixes a silly mistake which made #693 completely useless. As long as you don't run ghc-mod commands on unsaved buffers it should work.

You are right that #609 (i.e. the lack of calling unmap-file) is the real root cause here. This is really just a band-aid.

commented

0497267 landed on v5.8