Re: [Haskell-beginners] Can't install json-.0.4.4 - memory allocation failed

You might have the most recent haskell platform installed, but the version of GHC that is actually being used to compile is much older. I would guess that you have previously installed *something* using Macports (or fink/homebrew), which depended on that specific GHC. Try removing it via the macports. Peter On 20 November 2012 21:42, Dan Tenenbaum wrote:

Thanks. My goal is also to install pandoc. The problem is that what I currently have is the latest version of the Haskell Platform which is available as a binary for Mac OS 10.5. If I want a more recent Haskell Platform, I need to build from source (and/or use port or brew) which I haven't been able to do successfully, but I guess that's a different post....

Thanks, Dan

On Tue, Nov 20, 2012 at 12:52 PM, Rico Moorman wrote:

...

Hi Dan,

I actually ran into the same problem installing the json library (as requirement of pandoc) some time ago. I solved this by using a more recent version of GHC (for linux in my case). I think 6.12.3 is regarded as quite dated.

I hope this helps.

Best regards,

Rico Moorman

On Mon, Nov 19, 2012 at 7:18 PM, Dan Tenenbaum wrote:

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Hi all,

Please tell me where I should post this if this is not the appropriate list.

I tried to install the json-0.4.4 package on Mac OS 10.5.8, and got this error:

$ sudo cabal install "json-0.4.4" Building json-0.4.4... [1 of 7] Compiling Text.JSON.Types ( Text/JSON/Types.hs, dist/build/Text/JSON/Types.o ) [2 of 7] Compiling Text.JSON.Pretty ( Text/JSON/Pretty.hs, dist/build/Text/JSON/Pretty.o ) [3 of 7] Compiling Text.JSON.ReadP ( Text/JSON/ReadP.hs, dist/build/Text/JSON/ReadP.o )

Text/JSON/ReadP.hs:104:21: Warning: A do-notation statement discarded a result of type b. Suppress this warning by saying "_ <- n", or by using the flag -fno-warn-unused-do-bind [4 of 7] Compiling Text.JSON.Parsec ( Text/JSON/Parsec.hs, dist/build/Text/JSON/Parsec.o ) ghc: memory allocation failed (requested 2097152 bytes) cabal: Error: some packages failed to install: json-0.4.4 failed during the building phase. The exception was: ExitFailure 1

This is on a machine with 16GB of RAM.

I don't think

http://www.haskell.org/cabal/FAQ.html#cabal-goes-into-an-infinite-loop--runs...

...

applies because I'm using higher versions than mentioned there: $ ghc --version The Glorious Glasgow Haskell Compilation System, version 6.12.3 $ cabal --version cabal-install version 0.8.2 using version 1.8.0.6 of the Cabal library

I know Mac OS 10.5.8 is old, but unfortunately ugrading this particular machine is not an option. Hope someone can help. Thanks, Dan

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