Merge pull request #6215 from valeriangalliat/npm-engine-fix

Patch npm packages to ignore npm requirements

pkgs/development/web/nodejs/build-node-package.nix

@@ -83,6 +83,9 @@ let
       # Some version specifiers (latest, unstable, URLs, file paths) force NPM
       # to make remote connections or consult paths outside the Nix store.
       # The following JavaScript replaces these by * to prevent that:
+      # Also some packages require a specific npm version because npm may
+      # resovle dependencies differently, but npm is not used by Nix for dependency
+      # reslution, so these requirements are dropped.
 
       (
       cat <<EOF
@@ -131,6 +134,11 @@ let
             }
         }
 
+        /* Ignore npm version requirement */
+        if(packageObj.engines) {
+            delete packageObj.engines.npm;
+        }
+
         /* Write the fixed JSON file */
         fs.writeFileSync("package.json", JSON.stringify(packageObj));
       EOF