Values file `data.list("/")` should read from root library

[cari-lynn]

What steps did you take: When data.list("/") within a data values file, it should list the files relative to the root library. Playground reproduction example: https://carvel.dev/ytt/#gist:https://gist.github.com/cari-lynn/8b7c194fd28bcab0ec80e716eecc161f

What happened: It will list no files at all.

What did you expect: I expect that data.list("/") will list all files relative to the root library

Anything else you would like to add: data.list("") without the / will list files relative to the current directory just as expected. This problem just shows up when using the /.

I believe this happens because we don't pass down the root library during data values pre processing. But I believe this could be changed.

https://github.com/vmware-tanzu/carvel-ytt/blob/develop/pkg/workspace/data_values_pre_processing.go#L119-L121

ytt Docs

originating Slack thread in #carvel

Environment:

• ytt version (use ytt --version): v0.40.1
• OS (e.g. from /etc/os-release):

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[cari-lynn]

It's also not possible to read from the root directory in data.read("/") in a data values file only. It is still able to read from the same directory. I believe its caused by the same thing as this bug. Heres my reproduction example.

[voor]

Is there an incoming reason for closing this issue?

[pivotaljohn]

Ah! I thought that this issue was linked with it's PR (it is in ZenHub, but not GitHub).

It's been fixed, sir.

We're looking at cutting the next version soon!