The ‘th-utilities’ package provides a number of useful utilities for Template Haskell. In particular:
TH.Deriveprovides 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.Derive.Storabledefines derivation of Storable for ADTs.
TH.ReifyDataTypeprovides 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.RelativePathsprovides 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
TH.Utilitiesprovides a miscellaneous set of utilities that are useful within this package and elsewhere.
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.
Makes relative path stuff less noisyi with GHCi.
- First public release