Bindings generated by haskell-gi are by default compiled with support for OverloadedLabels.

This support for OverloadedLabels comes at a cost in compile time, which can be significant in some cases. For convenience, this support can be switched off in programs using haskell-gi generated bindings, which do not require overloading support, by making them depend (in the build-depends field of the cabal file) on haskell-gi-overloading == 0.0.*.