fix package installation in colab

google / swift-jupyter

Apache License 2.0

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fix package installation in colab #53

Closed marcrasi closed 5 years ago

marcrasi commented 5 years ago

Colab was sending some blank execution requests, which caused the PackageInstallException to trigger when you try to install packages. We previously worked around it by commenting out the PackageInstallException.

This PR fixes it more properly by ignoring blank execution requests.