Only emit buildozer add deps if export exists #1389
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Previously, unused_deps would emit `add deps` for all the exports of a particular label that it was removing. If there were no exports, the buildozer commands would fail complaining about having 0 arguments. ``` > buildozer "add deps $(bazel query 'labels(exports, @maven//:com_google_guava_guava)' | tr '\n' ' ')" //http-server/ce-kafka-http-server:http-server-test-jar INFO: Invocation ID: cd696714-cd65-497d-b2cd-206dc679a610 Loading: 0 packages loaded INFO: Empty results Too few arguments for command 'add', expected at least 2. ``` We now guard against running the buildozer command only if the query returns values. ``` > deps=$(bazel query 'labels(exports, @maven//:com_google_guava_guava)' | tr '\n' ' '); [ -n "$deps" ] && buildozer "add deps $deps" //http-server/ce-kafka-http-server:http-server-test-jar INFO: Invocation ID: f7d9a5fe-ef85-4ea8-8ac7-8eed6ae1a158 Loading: 0 packages loaded INFO: Empty results ```
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Previously, unused_deps would emit
add depsfor all the exports of a particular label that it was removing. If there were no exports, the buildozer commands would fail complaining about having 0 arguments.We now guard against running the buildozer command only if the query returns values.