This short talk introduces GHC's representation of constraints in its constraint solver. This is a good place to start if you're interested in how the typechecker works or considering extending it. The talk also doubles as an Experience Report as a typechecker…

How a linear constraint arrow relates to freezing arrays in Haskell.

Given the following Haskell code snapshot:

class Foo a where
bar :: a -> ...
quux :: a -> ...
...
Where the value of a is determined at runtime - the class dispatches on this value...

The Glorious Glasgow Haskell Compiler.

As the title of the question indicates, I want to know what is Levity polymorphism and what is its motivation ? I know this page has some details in it, but most of the explanations there go over t...

The Android's linker (bionic) disallows loading most of the shared libraries from /system when a request is going from the executable code belonging to "classloader-namespace". (Source code is updated for Android 11).