Recommend files() instead of fileTree() in protobuf dependency #294
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We incorrectly recommended the use of:
protobuf fileTree("ext/")
With this syntax Gradle will collect all files under the given directory and emit them as individual files, leaving the plugin unable to tell what the root directory is, thus dumping the files under the same directory.
If we just pass the directory to the configuration, the current implementation will correctly handle the copying of a whole directory, preserving its structure:
protobuf files("ext/")
This PR includes a test to reproduce the issue, and updates tests and examples to use the latter syntax. A warning will be printed if the former syntax is detected.
Resolves #248