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bdbcb6d7aa
Brings Python in line with our other dependencies, and means users no longer need to install it prior to building, or deal with issues caused by having the wrong version available.
90 lines
3.1 KiB
Python
90 lines
3.1 KiB
Python
_python_distros = {
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"macos_amd64": struct(
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url = "https://github.com/indygreg/python-build-standalone/releases/download/20211012/cpython-3.9.7-x86_64-apple-darwin-install_only-20211011T1926.tar.gz",
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sha256 = "43cb1a83919f49b1ce95e42f9c461d8a9fb00ff3957bebef9cffe61a5f362377",
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),
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"macos_arm64": struct(
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url = "https://github.com/indygreg/python-build-standalone/releases/download/20211012/cpython-3.9.7-aarch64-apple-darwin-install_only-20211011T1926.tar.gz",
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sha256 = "213d64f08f82184c9ad398537becf9b341ee85b1c406cfb2b4cbcb78cdb27a2c",
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),
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"linux_amd64": struct(
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# pending https://github.com/indygreg/python-build-standalone/issues/95
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url = "https://github.com/ankitects/python-build-standalone/releases/download/anki-2021-10-15/cpython-3.9.7-x86_64-unknown-linux-gnu-install_only-20211013T1538.tar.gz",
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sha256 = "6a42fe15950f4e42000f5c68ebefacf8fce024f4d80a446789c18b174efdec1b",
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),
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"windows_amd64": struct(
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url = "https://github.com/indygreg/python-build-standalone/releases/download/20211012/cpython-3.9.7-x86_64-pc-windows-msvc-shared-install_only-20211011T1926.tar.gz",
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sha256 = "80370f232fd63d5cb3ff9418121acb87276228b0dafbeee3c57af143aca11f89",
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),
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}
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def get_platform(rctx):
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if rctx.os.name == "mac os x":
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result = rctx.execute(["arch"])
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if result.return_code:
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fail("invoking arch failed", result.stderr)
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arch = result.stdout.strip()
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if arch == "i386":
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return "macos_amd64"
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elif arch == "arm64":
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return "macos_arm64"
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else:
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fail("unexpected arch:", arch)
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elif rctx.os.name == "linux":
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return "linux_amd64"
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elif rctx.os.name.startswith("windows"):
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return "windows_amd64"
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else:
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fail("unexpected platform", rctx.os.name)
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def _impl(rctx):
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# bundled python overriden?
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if rctx.os.environ.get("PYO3_PYTHON"):
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path = rctx.os.environ.get("PYO3_PYTHON")
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rctx.symlink(path, "python")
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else:
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platform = get_platform(rctx)
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distro = _python_distros.get(platform)
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rctx.download_and_extract(
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url = distro.url,
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sha256 = distro.sha256,
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stripPrefix = "python",
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)
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if platform.startswith("windows"):
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path = rctx.path("python.exe")
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else:
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path = rctx.path("bin/python3")
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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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