[Haskell-cafe] TH splicing and recompilation checking

Erik Hesselink hesselink at gmail.com
Tue Jul 16 19:49:58 CEST 2013

There is a GHC ticket about implementing a DEPENDS pragma for doing
this [0]. There are patches attached, but it looks like it isn't
finished yet.


[0] http://ghc.haskell.org/trac/ghc/ticket/4900

On Tue, Jul 16, 2013 at 7:41 PM, Johannes Waldmann
<waldmann at imn.htwk-leipzig.de> wrote:
> Hi.
> we are using template Haskell to splice in some code
> that is produced by reading and transforming the contents of another file.
> now, if this "other file" is touched (by editing),
> but not the main file, then ghc (and cabal) do not realize
> that the main file does need to be recompiled.
> is there a way to tell them about the dependency?
> (example main file:
> https://github.com/apunktbau/co4/blob/master/CO4/Test/Queens.hs)
> - J.W.
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