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POGTK2HS fails to install with recent cabal versions
 

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  1. POGTK2HS fails to install with recent cabal versions
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    <p>I'm starting a new project that will hopefully use gtk2hs. However, I can not get this package to install on my fairly typical Linux box. Here is the failure :</p> <pre><code>[1 of 2] Compiling SetupWrapper ( /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs, /tmp/cairo-0.12.4-4201/cairo-0.12.4/dist/dist-sandbox-58b5f9c6/setup/SetupWrapper.o ) /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs:94:45: Ambiguous occurrence `moreRecentFile' It could refer to either `SetupWrapper.moreRecentFile', defined at /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs:149:1 or `Distribution.Simple.Utils.moreRecentFile', imported from `Distribution.Simple.Utils' at /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs:8:1-32 /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs:95:45: Ambiguous occurrence `moreRecentFile' It could refer to either `SetupWrapper.moreRecentFile', defined at /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs:149:1 or `Distribution.Simple.Utils.moreRecentFile', imported from `Distribution.Simple.Utils' at /tmp/cairo-0.12.4-4201/cairo-0.12.4/SetupWrapper.hs:8:1-32 Failed to install cairo-0.12.4 [1 of 2] Compiling SetupWrapper ( /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs, /tmp/glib-0.12.4-4201/glib-0.12.4/dist/dist-sandbox-58b5f9c6/setup/SetupWrapper.o ) /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs:94:45: Ambiguous occurrence `moreRecentFile' It could refer to either `SetupWrapper.moreRecentFile', defined at /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs:149:1 or `Distribution.Simple.Utils.moreRecentFile', imported from `Distribution.Simple.Utils' at /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs:8:1-32 /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs:95:45: Ambiguous occurrence `moreRecentFile' It could refer to either `SetupWrapper.moreRecentFile', defined at /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs:149:1 or `Distribution.Simple.Utils.moreRecentFile', imported from `Distribution.Simple.Utils' at /tmp/glib-0.12.4-4201/glib-0.12.4/SetupWrapper.hs:8:1-32 Failed to install glib-0.12.4 </code></pre> <p>It seems to be related to recent cabal versions, since that used to work before. It seems to be a known bug (<a href="http://trac.haskell.org/gtk2hs/ticket/1292" rel="noreferrer">http://trac.haskell.org/gtk2hs/ticket/1292</a> , <a href="http://trac.haskell.org/gtk2hs/ticket/1291" rel="noreferrer">http://trac.haskell.org/gtk2hs/ticket/1291</a> and <a href="http://trac.haskell.org/gtk2hs/ticket/1289" rel="noreferrer">http://trac.haskell.org/gtk2hs/ticket/1289</a>), however it has not moved for weeks. I am not sufficiently competent to suggest a good fix, so I would like your advice. This is very annoying since I am stuck on this important project, and it pains me to think that the main GUI lib of our language has been broken for many weeks now.</p> <p>cabal-install version 1.18.0.2 using version 1.18.1.1 of the Cabal library / ghc 7.4.1</p> <p>Thanks for your help</p>
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    1. COYou can edit `Setup.hs` and change it to use explicit imports.
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      1. USMikhail Glushenkov
    2. COYou can see from your error message that the issue is in the `cairo` package, in the file `SetupWrapper.hs`, which defines the function `moreRecentFile` but also imports a function of the same name from `Distribution.Simple.Utils` (part of the cabal library). Presumably that's a new function added to cabal since the `cairo` package was tested. [Here](http://www.mail-archive.com/gtk2hs-devel@lists.sourceforge.net/msg01338.html) is a patch I found with a quick google search; don't know the status.
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      1. USjberryman
    3. COThank you. Indeed the root of the problem is easy to fix. I have never used setup.hs files, I guess that confused me. I will probably take this path, and maybe try to get that fixed upstream.
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