Zeroth takes the first approach. It only supports a subset of TH
(DecsQ splices) however.

http://hackage.haskell.org/package/zeroth

https://github.com/aavogt/zeroth is a fork that works with more recent
haskell-src-exts and ghc

On Sat, Jul 5, 2014 at 3:59 PM, John Meacham <john@repetae.net> wrote:
> Actually, I was looking into it a little, and template haskell could
> effectively be implemented by a pre-processor and a portable library
> that is compiler independent. If one could get ghc to spit out the
> template haskell source after it expands it then that can be fed to
> jhc as a quick first pass, but ideally the pre-processor TH would
> create programs that can be run under the target compiler. that would
> bring TH to every haskell compiler.
>
>     John
>
> On Sat, Jul 5, 2014 at 10:38 AM, Brandon Allbery <allbery.b@gmail.com> wrote:
>> On Sat, Jul 5, 2014 at 1:34 PM, Carter Schonwald
>> <carter.schonwald@gmail.com> wrote:
>>>
>>> does JHC support template haskell?
>>
>>
>> Pretty sure TH is too closely tied to ghc.
>>
>> --
>> brandon s allbery kf8nh                               sine nomine associates
>> allbery.b@gmail.com                                  ballbery@sinenomine.net
>> unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net
>
>
>
> --
> John Meacham - http://notanumber.net/
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