yarn workspaces

[qknight]

i wonder if you encountered 'yarn workspaces' yet:

nix-community/yarn2nix#57

[Profpatsch]

Haven’t read the article in-depth, but if every dependency is in the top-level yarn.lock you can generate the nix package set with yarn2nix in the top-level and then use yarn2nix --template to generate one template nix file per subproject. Since we use self/super in the yarn2nix output, it should be possible to add the subrepos so they can see each other. I added a bit of functionality to overwrite package sets in the last commits on master.

Something like (untested):

let
  nodeDeps = nix-lib.buildNodeDeps (lib.composeExtensions
    (self: super: { 
      submodule1 = super._buildNodePackage
        (nix-lib.callTemplate ./submodule1/sub-package-template.nix self);
      submodule2 = …;
    })
    (pkgs.callPackage ./yarn-lock.nix {}));
in nix-lib.buildNodePackage
 ({ src = ./.; } //
    (nix-lib.callTemplate ./top-package-template.nix nodeDeps));