try installing tarball directly

bollwyvl · bollwyvl · commit e0e113799e81 · 2020-04-30T13:34:22.000-04:00
diff --git a/binder/postBuild b/binder/postBuild
@@ -2,5 +2,6 @@
 set -eux
 npm install
 npm build
-jupyter labextension install $(npm pack .) --no-build --debug
+npm pack
+jupyter labextension install ./jupyterlab-drawio-*.tgz --no-build --debug
 jupyter lab build --dev-build=False --minimize=True --debug
