TH splicing and recompilation checking
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.
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.
Erik
[0] http://ghc.haskell.org/trac/ghc/ticket/4900
On Tue, Jul 16, 2013 at 7:41 PM, Johannes Waldmann
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.
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Yup, such a thing exists! I think it's a little bit obscure because for some bizarre reason it isn't reexported by Language.Haskell.TH: http://hackage.haskell.org/packages/archive/template-haskell/2.8.0.0/doc/htm... -Michael On Tue, Jul 16, 2013 at 10:41 AM, Johannes Waldmann < waldmann@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.
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
I think you want qAddDependentFile in Language.Haskell.TH.Syntax http://hackage.haskell.org/packages/archive/template-haskell/2.7.0.0/doc/htm... On Tue, Jul 16, 2013 at 05:41:19PM +0000, Johannes Waldmann 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.
_______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
participants (4)
-
Erik Hesselink -
Johannes Waldmann -
Michael Sloan -
Tristan Ravitch