bazel: write out empty files for files excluded by build tag#71
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Instead of copying the existing file and betting that bazel/blaze will exclude them based on their build tag, we write out a near-empty file (with just a package declaration) instead. This way the destination directory only contains files with `package <rewritten-package-name>`, rather than a mix of `package <rewritten-package-name>` and `package main`. Signed-off-by: Chris Koch <chrisko@google.com>
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Instead of copying the existing file and betting that bazel/blaze will
exclude them based on their build tag, we write out a near-empty file
(with just a package declaration) instead.
This way the destination directory only contains files with
package <rewritten-package-name>, rather than a mix ofpackage <rewritten-package-name>andpackage main.