vertexclique commented on a change in pull request #7064:
URL: https://github.com/apache/arrow/pull/7064#discussion_r418159133
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File path: rust/arrow/Cargo.toml
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@@ -50,6 +50,7 @@ chrono = "0.4"
flatbuffers = "0.6"
hex = "0.4"
arrow-flight = { path = "../arrow-flight", optional = true }
+clap = "2.33.0"
Review comment:
This adds the extra dependency to every build. Adding an external test
harness that compiles outside the project would be nice. I think that's better
to go to [dev-dependencies]. I strongly suggest using
[trybuild](https://crates.io/crates/trybuild), compiler like test harness.
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