The ‘th-utilities’ package provides a number of useful utilities for
Template Haskell.
In particular:
TH.Derive
provides a convenient system for using TH to derive typeclass instances. It
allows for open registration of TH derivers, and reuses instance syntax for
invoking them.
TH.ReifyDataType
provides utilities for reifying simplified datatype info. It omits details
that you don’t usually want to handle, making it much more straightforward to
generate code based on datatype structure.
TH.RelativePaths
provides utilities for loading files based on paths relative to the cabal
file. This is particularly handy for loading code into ghci even when its
current dir isn’t the package dir. Ideally, this module would be used by
everyone who currently uses qAddDependentFile.
TH.Utilities
provides a miscellaneous set of utilities that are useful within this package
and elsewhere.
Changes
ChangeLog
0.2.0.0
Adds TH.ReifySimple, which supports reifying most of the information TH users
care about.
Adds some utilities based on SYB, which is often useful for TH.