24 lines
877 B
Python
24 lines
877 B
Python
_UNSET = "_UNSET"
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def _simple_repository_impl(rctx):
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if (rctx.attr.build_file == None) == (rctx.attr.build_file_content == _UNSET):
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fail("exactly one of `build_file` and `build_file_content` must be specified")
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if rctx.attr.build_file != None:
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# Remove any existing BUILD.bazel in the repository to ensure
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# the symlink to the defined build_file doesn't fail.
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rctx.delete("BUILD.bazel")
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rctx.symlink(rctx.attr.build_file, "BUILD.bazel")
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else:
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rctx.file("BUILD.bazel", rctx.attr.build_file_content)
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simple_repository = repository_rule(
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implementation = _simple_repository_impl,
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attrs = {
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"build_file": attr.label(allow_single_file = True),
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"build_file_content": attr.string(default = _UNSET),
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},
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doc = "Makes an empty repository from just one BUILD.bazel file.",
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local = True,
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)
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