Re: 7.8 Release Update

Template Haskell *does* work with profiling, you just have to compile the code without profiling first (Cabal knows how to do this and does it automatically). The big obstacles to loading profiled code into ghci are (a) lack of support in the byte code compiler and interpreter and (b) ghci itself would need to be a profiled executable. On 9 Sep 2013 22:21, "Edward Z. Yang" wrote:

Hello Mikhail,

It is a known issue that Template Haskell does not work with profiling (because GHCi and profiling do not work together, and TH uses GHCi's linker). [1] Actually, with the new linker patches that are landing soon we are not too far off from having this work.

Edward

[1] http://ghc.haskell.org/trac/ghc/ticket/4837

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Hi,

On Mon, Sep 9, 2013 at 10:11 PM, Simon Marlow wrote:

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I think Kazu is saying that when he builds something with profiling

using

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cabal-install, it fails because cabal-install tries to build a dynamic version too. We don't want dyanmic/profiled libraries (there's no

Excerpts from Mikhail Glushenkov's message of Mon Sep 09 14:15:54 -0700 2013: point,

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you can't load them into GHCi). Perhaps this is something that needs fixing in cabal-install?

Aren't they needed when compiling libraries that are using Template Haskell for profiling? The issue sounds like it could be TH-related.