What goes in a Stack package.yaml file?

haskell haskell-stack
Chris Martin picture Chris Martin · Oct 30, 2016 · Viewed 7k times · Source

I notice that Stack supports using a package.yaml file that it will use to generate a .cabal file. For example, yi-core/package.yaml. Its structure seems very similar to a Cabal file, but not quite the same. Some of the keys have been renamed (for example, Stack uses source-dirs instead of hs-source-dirs).

I haven't found any documentation on this feature. The Stack docs don't seem to mention package.yaml at all. Does a specification exist?

Answer

kosmikus picture kosmikus · Oct 30, 2016

This is hpack, available here: https://github.com/sol/hpack

It's a slightly different package format, and, as you say, can be used to generate cabal files. It isn't directly tied to stack.

Related questions

How to install a package using stack?

Using cabal, I could install hakyll with the command: cabal install hakyll How can I do the same thing using stack?

Read More
What is the difference between Cabal and Stack?

Yesterday I learnt about a new Haskell tool called Stack. At the first blush, it looks like it does much the same job as Cabal. So, what is the difference between them? Is stack a replacement for Cabal? In which …

Read More
Profiling builds with Stack

How do I tell stack to build my executable and all its dependencies with -prof? Simply adding it to ghc-options in the .cabal file is not enough, because it only tries to build the executable with profiling enabled, which fails.

Read More