Apt-get dependencies in colab broken by NVIDIA signing key updates

[samquinan]

Describe the current behavior
Dependency installs with calls to apt-get update are broken (e.g., see step 0 of the HelloMagenta tutorial). That call now results in the following errors:

W: GPG error: https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY A4B469963BF863CC
E: The repository 'https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64  InRelease' is no longer signed.

This appears to be a more general issue tied to NVIDIA updating and rotating the signing keys used by apt-get (see developer blog announcement and directions for updating the keys).

Similar errors can be seen reported in NVIDIA repo with the solution from the developer blog provided as the response.

Describe the expected behavior
The expected behavior is for apt-get update to not throw signing errors.

What web browser you are using
Chrome

Additional context
This link should be a minimal, public, self-contained notebook that reproduces the issue, saved as a Github Gist.

[craigcitro]

Thanks for the (excellent) report -- this is indeed going to be nasty friction. I'm working on a fix, which can hopefully roll out tomorrow.

[craigcitro]

For anyone hitting this issue, an immediate workaround -- run this code in a cell by itself:

!wget https://developer.download.nvidia.com/compute/cuda/repos/ubuntu1804/x86_64/cuda-keyring_1.0-1_all.deb && dpkg -i cuda-keyring_1.0-1_all.deb && rm -f cuda-keyring_1.0-1_all.deb && rm -f /etc/apt/sources.list.d/cuda.list

[craigcitro]

internal tracking: b/230797939

[craigcitro]

Fix is live!