Prerequisites

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Description

__dir__ provided by lake when running from the package's root is ./.. When running from a subdirectory using -d=.., __dir__ is ../.. If running again without changing lakefile and without -R, __dir__ doesn't change regardless of cwd or -d=. As I understand, this is because it is stored in lakefile.olean.

Context

Steps to Reproduce

1. Create a project
2. To lakefile add:

script myScript do
  IO.println __dir__
  return 0

3. From the package's root, run: lake run myScript
4. From a subdirectory run lake run -d=.. myScript
5. From the same subdirectory run lake run -R -d=.. myScript

Expected behavior:
Output contains paths to the package's directory.

Actual behavior:
Second path is invalid (it is a relative path, that is correct only when starting from the package's root).
Third path is valid, because -R triggers re-elaboration.

Versions

"4.18.0-rc1"
Linux 6.12.6-100.fc40.x86_64

Additional Information

I think it can be fixed by using IO.FS.realPath in Lake.DSL.elabDirConst.

Impact

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