It is not possible to tell tools.build to copy files without substitution for a custom set of file extensions because the copy function does not actually use its parameter (non-replaced-exts) - it always uses default-non-replaced-exts:
(defn copy
[{:keys [target-dir src-dirs include replace ignores non-replaced-exts]
:or {include "**", ignores default-ignores, non-replaced-exts default-non-replaced-exts}
:as _params}]
(let [to-path (.toPath (file/ensure-dir (api/resolve-path target-dir)))
ignore-regexes (map re-pattern ignores)
non-replaced (map #(str "." %) default-non-replaced-exts)]
...)
The binding non-replaced-exts exists and defaults to default-non-replaced-exts but the function body never uses non-replaced-exts: it has default-non-replaced-exts hardcoded.
A new feature in the next version of deps-new depends on this working correctly.
