18 lines
520 B
Python
18 lines
520 B
Python
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def _workspace_root_impl(ctx):
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"""Dynamically determine the workspace root from the current context.
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The path is made available as a `WORKSPACE_ROOT` environmment variable and
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may for instance be consumed in the `toolchains` attributes for `cc_library`
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and `genrule` targets.
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"""
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return [
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platform_common.TemplateVariableInfo({
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"WORKSPACE_ROOT": ctx.label.workspace_root,
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}),
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]
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workspace_root = rule(
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implementation = _workspace_root_impl,
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attrs = {},
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)
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