If :paths contain a project-local symlink that points to a directory outside the project, TDA prints a warning like:
WARNING: Use of :paths external to the project has been deprecated, please remove: resources
In general, it's a good idea to warn about external dependencies, and if the :paths were, say, ["../untracked-src" "/tmp/misc"] I'd be glad to see the warning.
But in this case, my build is caching intermediate results on /tmp (mounted as tmpfs for speed among other things) and referring to them via project-local symlink which I didn't expect TDA to differentiate from a local dir.
Say deps.edn is
{:paths ["resources"]}
and resources is a symlink
resources -> /tmp/resources.FlkJvG
then it'd be nice not to see this warning.
It seems the :paths validator chases symlinks as it canonicalizes paths before checking whether they're external. Perhaps it can be relaxed to normalize paths without chasing symlinks e.g.:
(in-ns 'clojure.tools.deps.alpha.util.dir)
(defn normalize
"Make normalized File in terms of the current directory context without following symlinks.
f may be either absolute or relative."
^File [^File f]
(-> (if (.isAbsolute f)
f
(jio/file *the-dir* f))
.toPath
.normalize
.toFile))
;; and modify `sub-path?' to use `normalize' instead of `canonicalize'.
