A program to demonstrate that the hint library can load arbitrary values; even if it doesn't have the source, even unserializable values such as functions, even values which involve existential datatypes, and even if the types hidden in those existential datatypes are unknown until runtime.
Each folder except hint-demo contains a small library, which will be loaded at runtime by hint-demo. The first step is to navigate to each folder and to install each library using cabal install. It's possible to ask hint to look inside a sandbox but in this demo, to make it easier for hint to find the installed binaries, please don't use a sandbox.
If you really want to make sure that hint-demo is loading the compiled .hi, .a, .so or .dylib files which have been installed to your ~/.cabal folder, you can erase the source files for those libraries if you want.
Next, go to the hint-demo folder, install and run the program. If everything worked correctly, the output should be as follows:
$ hint-demo
"1.0"
"True"
"42-Branch (Leaf 1) (Branch (Leaf 2) (Leaf 3))"