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tools-build 2025-06-13
agorgl 2025-06-13T17:20:24.719729Z
Why most of the tools.build compile-clj usages I see have either before or after a copy-dir with the "src" dir along the "resources"?
E.g. from the official https://clojure.org/guides/tools_build:
(b/copy-dir {:src-dirs ["src" "resources"]
:target-dir class-dir})
(b/compile-clj {:basis @basis
:ns-compile '[my.lib.main]
:class-dir class-dir})(b/copy-dir {:src-dirs ["resources" "src"] :target-dir class-dir})
(b/compile-clj { ... :class-dir class-dir :src-dirs ["src"] ... })copy-dir :src-dirs?
Alex Miller (Clojure team) 2025-06-13T17:32:11.835629Z
You dont necessarily need to copy the the src
Alex Miller (Clojure team) 2025-06-13T17:32:44.218199Z
But if you’re going to use the doc function etc those require the src files
agorgl 2025-06-13T18:08:30.813329Z
Ah I see, it makes sense
agorgl 2025-06-13T18:08:52.685839Z
I suppose they are also needed for the stack traces?
they aren't actually needed for doc either, but for source
agorgl 2025-06-13T18:14:20.541069Z
Ah that makes sense, thank you for the info!
I imagine it is mostly included in the examples because it is what other clojure build tools (like lein) do by default
seancorfield 2025-06-13T19:39:02.576999Z
If your main ns doesn't transitive reach all your source files -- perhaps because one or more nses are dynamically required at runtime -- then you'll need to copy those files (since they won't be compiled). I think Clojure itself has one of these (the instant time stuff?).
Alex Miller (Clojure team) 2025-06-13T20:33:59.390439Z
That was true at one point, but has not been for a while
seancorfield 2025-06-13T20:47:04.537109Z
Because we no longer have to support JDK 7 and earlier, right?
👍 1
seancorfield 2025-06-13T20:47:39.807939Z
(I have projects that have dynamically required nses so those don't get transitively compiled, as I recall)