The `test_win` job is occasionally failing where a super old NodeJS
version is used even though we installed a proper one with `nvm`.
It's unclear how the CircleCI windows VMs differ here, it's coming
up rarely and is hard to reproduce when SSH-ing into VMs. Our best
guess is that the existing NodeJS version from the container/image is
super old and somehow takes precedence over the NVM-managed NodeJS
version. This could happen due to bad ordering in the `$PATH`
environment variable, or NVM not properly being wired up there.
We attempt to fix this by always setting `$PATH` to the NVM symlink
directory manually- with highest priority.
PR Close#48326
Improves stability of the Windows Bazel CI job by
installing Bazelisk globally.
Also makes the environment helpers more convenient by
evaluating the variable assignments directly, simplifying
some Bash logic.
PR Close#45431
It is totally fine, and expected to use Git Bash for running Bazel
on Windows. In fact this is the most common setup for Bazel on Windows
and it's unrealistic to run without it.
This allows us to remove the old/legacy Powershell setup from CI
which is also quite flaky sometimes and does not reproduce how
Bazel is used on windows-users dev machines.
PR Close#45431
Paul Gschwendtner