nix: use yarn2nix from nixpkgs, stop copying modules

Signed-off-by: Jakub Sokołowski <jakub@status.im>

nix/mobile/node-package.nix

@@ -1,46 +1,15 @@
-{ lib, fetchFromGitHub, pkgs, nodejs, yarn }:
+{ lib, fetchFromGitHub
+, nodejs, yarn2nix-moretea }:
 
 let
-  yarn2nix = import (fetchFromGitHub {
-    name = "yarn2nix-source";
-    owner = "moretea";
-    repo = "yarn2nix";
-    rev = "3cc020e384ce2a439813adb7a0cc772a034d90bb";
-    sha256 = "0h2kzdfiw43rbiiffpqq9lkhvdv8mgzz2w29pzrxgv8d39x67vr9";
-  }) { inherit pkgs nodejs yarn; };
+  version = lib.fileContents ../../VERSION;
   yarnLock = ../../mobile/js_files/yarn.lock;
   packageJSON = ../../mobile/js_files/package.json;
   packageJSONContent = lib.importJSON packageJSON;
-
-  # Create a yarn package for our project that contains all the dependecies, so that we have a
-  # known good node_modules folder that we can use later on
-  projectNodePackage = yarn2nix.mkYarnModules rec {
-    name = "${pname}-${version}";
-    pname = packageJSONContent.name;
-    version = packageJSONContent.version;
-    inherit packageJSON yarnLock;
-    # Replace symlink to deps with copy of real dependencies
-    postBuild = ''
-      # Fixup symlinks in folder we'll be moving.
-      # Basically transform a symlink pointing to ../../../../../../a into ../../../../a 
-      symlinks=( $(find $out/deps/${pname}/node_modules/ -lname '../../../../../..*') )
-      for sl in ''${symlinks[@]}; do
-        newTarget=$(readlink "$sl" | sed -E "s|(\.\./){2}(.*)|\2|")
-        ln -snf "$newTarget" "$sl"
-      done
-      unset sl
-      unset symlinks
-
-      # Merge deps with node_modules
-      cp -R --no-clobber $out/deps/${pname}/node_modules/. $out/node_modules/
-      # Get rid of deps
-      rm -rf $out/deps/
-      # Get rid of symlink to deps
-      rm $out/node_modules/${pname}
-
-      # Ensure the we copied expected dependencies from $out/deps
-      [ -d $out/node_modules/react-native-fs ] || exit 1
-    '';
-  };
-
-in projectNodePackage
+in
+  # Create a yarn package for our project that contains all the dependecies.
+  yarn2nix-moretea.mkYarnModules rec {
+    pname = "status-react";
+    name = "${pname}-node-deps-${version}";
+    inherit version packageJSON yarnLock;
+  }