My understanding is that node-gulp-babel v8 should be used with babel7. Same goes for node-babel-loader, you need v8 for babel7, but we only have node-babel-loader 7 in Debian.
If we want babel6 to co-exist with babel7, then we don't want to just update node-gulp-babel and node-babel-loader to v8. We want to keep node-gulp-babel and node-babel-loader at v7 for compatibility with babel6, and upload new node-gulp-babel8 and node-babel-loader8 for babel7. Back to the topic of this bug, do we really want to upgrade the yarn build system from babel6 to babel7 ? Here is some indication that upstream is not interested: https://github.com/yarnpkg/yarn/pull/6322 But I have raised the issue anyway: https://github.com/yarnpkg/yarn/issues/8083 Paolo
