Refuse to publish packages that import dev dependencies #4567
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This PR fixes #3143 by throwing an error when gleam publish is invoked and a dev dependency is imported in the code.
The check is implemented in
do_build_hex_tarball
. Another approach would be to implement the check in the analysis phase, but, as far as I can tell, there's no way to detect if the compilation has been invoked bygleam publish
or something else.I manually tested this and it works as expected, but I can add tests as well.