Broken symbolic link in cram tests involving dune sites

Learning
1

My application uses sites. Concretely, when the program runs it copies the contents of the site to an output folder. When running the program in a cram test, I am encountering broken symlinks:

   $ forester build
+ Success!

   $ file output/tree.xsl
+  output/tree.xsl: broken symbolic link to ../../../../../../default/bin/forester/theme/tree.xsl

I already tried configuring dune’s sandboxing behavior to no avail.

What can I do to make this work?

2

The docs say

How to Load Additional Files at Runtime - Dune documentation
During tests, the files are copied into the sites through the dependency (package mygui) and (package mygui_material_theme) as for other files in install stanza.

It’s not clear to me what that means. My dune file specifies:

(cram
 (deps
  %{bin:forester}
  (package forester)))
3

This ended up being an issue with my code. I was shelling out to cp -r. Switching to cp -rl seems to resolve this.