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45 lines
1 KiB
Python
45 lines
1 KiB
Python
def _impl(rctx):
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# locate python on path, and export it
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names = ["python3.9", "python3.8", "python3", "python.exe"]
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path = None
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for name in names:
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path = rctx.which(name)
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if path:
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break
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if not path:
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fail("python3 or python.exe not found on path")
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rctx.symlink(path, "python")
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rctx.file("BUILD.bazel", """
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load("@rules_python//python:defs.bzl", "py_runtime_pair")
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py_runtime(
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name = "python_runtime",
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interpreter_path = "{path}",
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python_version = "PY3",
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visibility = ["//visibility:public"],
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)
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py_runtime_pair(
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name = "python3_runtime_pair",
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py2_runtime = None,
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py3_runtime = ":python_runtime",
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)
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toolchain(
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name = "python3_toolchain",
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toolchain = ":python3_runtime_pair",
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toolchain_type = "@bazel_tools//tools/python:toolchain_type",
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visibility = ["//visibility:public"],
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)
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exports_files(["python"])
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""".format(path = path))
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setup_local_python = repository_rule(
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implementation = _impl,
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local = True,
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attrs = {},
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)
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