[Haskell-cafe] how to listen on a specific IP using the network
ajs at 2piix.com
Tue Mar 16 04:04:01 EDT 2010
On Mar 15, 2010, at 12:09 PM, Jeremy Shaw wrote:
> In happstack we use a really horrible trick involving template
> haskell where we see if the SockAddrInet6 constructor exists at
> compile time and conditionally compile different versions of the
> code that way. But it is really ugly.
Maybe a simpler code generator would be a better fit, since this task
isn't really parametrized over types? I'm not familiar with cabal
really -- can you drop down to bash? Can you run an arbitrary
program? Or at least one in the cwd? Or at the very least, one you
just built? If so, a simple bash script (or Haskell program) can emit
valid Haskell to compile. It can (potentially) be as simple as
concatenating your IPv6 instances/data to the end of the "default"
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