How to use github repo as dependency?

[ildar-shaymukhametov]

I have a simple haskell stack repo
I want to use it's Lib module as a dependency for my another project (made with this template: https://github.com/rvarun11/codespaces-ihp)
How can I do this?

Also tried this: https://cabal.readthedocs.io/en/3.4/cabal-project.html#specifying-packages-from-remote-version-control-locations, it even installed pf2e and it's deps; I added pf2e to App.cabal, but got error "Module not found"

[mpscholten]

You can follow most of the guide here https://ihp.digitallyinduced.com/Guide/package-management.html#using-a-different-version-of-a-haskell-package and use cabal2nix to create a nix file for your custom package. Then adjust the generated nix file to fetch from github.

Here's an example:

# Config/nix/haskell-packages/currencies.nix
{ mkDerivation, base, hspec, lib, text, fetchFromGitHub }:
mkDerivation {
  pname = "currencies";
  version = "0.2.0.0";
  libraryHaskellDepends = [ base text ];
  testHaskellDepends = [ base hspec text ];
  homepage = "https://github.com/alx741/currencies#readme";
  description = "Currencies representation, pretty printing and conversion";
  license = lib.licenses.bsd3;
  src = fetchFromGitHub {
    owner = "alx741";
    repo = "currencies";
    rev = "99f5bde00814510aa5993940ffc179f543bdb3cd";
    sha256 = "sha256-B0Ah0If3qRaN8c4Ygh6ayzigfB8fgXjaO+1bPWItBcI=";
  };
}

[ildar-shaymukhametov]

I could not make it work
I am trying another way: I have it build and put in a local folder
But still it does not work (flake.lock does not reflect any changes)

How to make it work?