How to upgrade to Ubuntu 20.04 while keeping lambda stack?

That didn’t seem to work:

~$ LAMBDA_REPO=$(mktemp) &&
wget -O${LAMBDA_REPO} https://lambdalabs.com/static/misc/lambda-stack-repo.deb 2 &&
sudo dpkg -i ${LAMBDA_REPO} && rm -f ${LAMBDA_REPO} &&
sudo apt-get -y update && sudo apt-get -y install lambda-stack-cuda
--2023-08-14 16:39:51--  https://lambdalabs.com/static/misc/lambda-stack-repo.deb
Resolving lambdalabs.com (lambdalabs.com)... 199.60.103.50, 199.60.103.150
Connecting to lambdalabs.com (lambdalabs.com)|199.60.103.50|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3588 (3.5K) [application/x-debian-package]
Saving to: ‘/tmp/tmp.hcDhXTtavY’

/tmp/tmp.hcDhXTtavY                              100%[=======================================================================================================>]   3.50K  --.-KB/s    in 0s

2023-08-14 16:39:52 (36.5 MB/s) - ‘/tmp/tmp.hcDhXTtavY’ saved [3588/3588]

--2023-08-14 16:39:52--  http://2/
Resolving 2 (2)... 0.0.0.2
Connecting to 2 (2)|0.0.0.2|:80...

But doing the one sayd in post REINSTALL Lambda Stack worked out flawlessly