Hi Guix! This patch adds a node-build-system. I wasn't sure if it was ready yet, but I think, since I didn't change it in the last months, that it might actually be :) The patch was initially made by Jelle Licht, and I improved a bit on it. Note that packages built with this build system will embed symlinks to their dependencies, but not devDependencies (build-only dependencies) according to the information in the metadata. Each package is installed in lib/node_modules/package-name and symlinks are added to lib/node_modules/package-name/node_modules. This allows us to use only inputs instead of propagated inputs. Executables are installed in bin according to metadata, and they should work even if called directly from their store path.