Prasanth Somasundar

I'm not sure if yarn.lock was added to the gitignore for a reason I'm missing, but it seemed contradictory to its intended purpose as I mentioned above. I created this...

That makes some sense - though that somewhat implies both npm and yarn are being used to manage the project which sounds strange given that the project specifically uses npm....

I took a quick look, and it seems that fixity/precedence is indeed found in [the interface for the file](https://hackage.haskell.org/package/ghc-8.4.1/docs/HscTypes.html#t:ModIface). You can get one of these interfaces using the [`LoadIface module`](https://hackage.haskell.org/package/ghc-8.4.1/docs/LoadIface.html)...