stack-to-nix cannot handle github key in extra-deps

[ttuegel]

In stack.yaml I have,

extra-deps:
  - graphviz-2999.20.0.3@sha256:cde383c356bc41136ed53cd27e0800f46dbd2185600dd0de18d66d5c49739d94
  - tasty-hedgehog-0.2.0.0@sha256:83a8b777fa472040979e44dba43c32441f55d5ddb9641a4d53deee4b0e09fa34
  - github: ttuegel/haskell-src-exts
    commit: 363dbd17d91ba58ac877d205c5e82c1672367008
    sha256: e02e7317509cb1c766b7f591bb7304fb436928ce6d99565a214f70467781aabe
    size: 1248687

stack-to-nix complains:

stack-to-nix: AesonException "Error in $['extra-deps'][2]: key \"git\" not present"
CallStack (from HasCallStack):
  error, called at stack2nix/Stack2nix.hs:55:18 in main:Stack2nix

I am using nix-tools from haskell.nix commit 3d79fa9.

[angerman]

That looks like an easy fix, just need an additional parseGithub similar to the parseDVCS in

https://github.com/input-output-hk/nix-tools/blob/bb5700d04f0ff2d1a3a7b3278121c1ec67898793/stack2nix/Stack2nix/Stack.hs#L186-L208