[eval symlinks] eval symlinks in print-dev-env

[savil]

Summary

On MacOS, in nix 2.20, I am seeing the following error with the global_add testscript. This also repros in CICD:

 Error: Command: /nix/var/nix/profiles/default/bin/nix print-dev-env /var/folders/zv/r3sx92_94gq86_rq3yn1ky2h0000gn/T/TestScripts3021118989/001/.local/share/devbox/global/default/.devbox/gen/flake --extra-experimental-features ca-derivations --option experimental-features nix-command flakes fetch-closure --json: exit status 1

        2024/02/02 16:44:15 Command stderr: error (ignored): error: end of string reached
        error:
               … while fetching the input 'path:/var/folders/zv/r3sx92_94gq86_rq3yn1ky2h0000gn/T/TestScripts3021118989/001/.local/share/devbox/global/default/.devbox/gen/flake'

               error: path '«unknown»/var' is a symlink

I'm not sure why this is now failing. Possibly (but low confidence) as a side-effect of this nix PR NixOS/nix@83c067c. Not sure if its intentional or not.

To workaround this, I am preemptively calling EvalSymlink in our golang prior to invoke nix print-dev-env.

How was it tested?

CICD run including our MacOS tests:
https://github.com/jetpack-io/devbox/actions/runs/7763452308

NOTE: I manually cancelled the run below in this PR, so the above CICD including MacOS could run.

[savil]

Current dependencies on/for this PR:

• main
  • PR [eval symlinks] eval symlinks in print-dev-env #1777 👈

This stack of pull requests is managed by Graphite.

[mikeland73]

That's kind of a big breaking change if they did in fact make it so you can't use symlinks as paths.

Anyway, this is pretty log risk so let's do it.

Unit tests FTW

[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ **syscall.Errno: <redacted errors.withStack>: <redacted fs.PathError>: go.jetpack.io/devbox/internal/nix in (*Nix).Pri... View Issue

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