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chore: remove old versions of Python 3.8 (#2700)
Python 3.8 has reached EOL and this PR removes old toolchains and most of the tests. Users can still use it if they register the toolchains themselves, but `rules_python` will no longer keep testing the toolchains. Removing the toolchains all-together will be done at a later stage which may require us to be more clever how we handle asks to include `3.8`. Maybe we can just fail if the user asks for a python version that does not exist, but I am concerned that `rules_python` depending on `protobuf` may pull in code that requests `3.8`. I'll look at this at some later time.
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‎.bazelci/presubmit.yml‎

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@@ -78,12 +78,10 @@ buildifier:
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coverage_targets:
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- //tests:my_lib_3_10_test
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- //tests:my_lib_3_11_test
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- //tests:my_lib_3_8_test
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- //tests:my_lib_3_9_test
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- //tests:my_lib_default_test
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- //tests:version_3_10_test
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- //tests:version_3_11_test
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- //tests:version_3_8_test
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- //tests:version_3_9_test
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- //tests:version_default_test
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tasks:

‎CHANGELOG.md‎

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@@ -60,13 +60,16 @@ Unreleased changes template.
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* 3.12.9
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* 3.13.2
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* (pypi) Use `xcrun xcodebuild --showsdks` to find XCode root.
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* (toolchains) Remove all but `3.8.20` versions of the Python `3.8` interpreter who has
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reached EOL. If users still need other versions of the `3.8` interpreter, please supply
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the URLs manually {bzl:ob}`python.toolchain` or {bzl:obj}`python_register_toolchains` calls.
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[20250317]: https://github.com/astral-sh/python-build-standalone/releases/tag/20250317
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{#v0-0-0-fixed}
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### Fixed
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* (runfiles) ({obj}`--bootstrap_impl=script`) Follow symlinks when searching for runfiles.
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* Do not try to run `chmod` when downloading non-windows hermetic toolchain
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* (toolchains) Do not try to run `chmod` when downloading non-windows hermetic toolchain
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repositories on Windows. Fixes
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[#2660](https://github.com/bazel-contrib/rules_python/issues/2660).
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‎examples/multi_python_versions/MODULE.bazel‎

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@@ -10,10 +10,6 @@ local_path_override(
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)
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python = use_extension("@rules_python//python/extensions:python.bzl", "python")
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python.toolchain(
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configure_coverage_tool = True,
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python_version = "3.8",
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)
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python.toolchain(
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configure_coverage_tool = True,
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# Only set when you have mulitple toolchain versions.
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pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
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use_repo(pip, "pypi")
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pip.parse(
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hub_name = "pypi",
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python_version = "3.8",
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requirements_lock = "//requirements:requirements_lock_3_8.txt",
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)
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pip.parse(
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hub_name = "pypi",
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python_version = "3.9",

‎examples/multi_python_versions/WORKSPACE‎

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@@ -15,7 +15,6 @@ python_register_multi_toolchains(
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name = "python",
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default_version = default_python_version,
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python_versions = [
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"3.8",
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"3.9",
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"3.10",
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"3.11",
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python_interpreter_target = {
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"3.10": "@python_3_10_host//:python",
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"3.11": "@python_3_11_host//:python",
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"3.8": "@python_3_8_host//:python",
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"3.9": "@python_3_9_host//:python",
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},
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requirements_lock = {
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"3.10": "//requirements:requirements_lock_3_10.txt",
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"3.11": "//requirements:requirements_lock_3_11.txt",
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"3.8": "//requirements:requirements_lock_3_8.txt",
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"3.9": "//requirements:requirements_lock_3_9.txt",
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},
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)

‎examples/multi_python_versions/requirements/BUILD.bazel‎

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load("@rules_python//python:pip.bzl", "compile_pip_requirements")
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compile_pip_requirements(
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name = "requirements_3_8",
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src = "requirements.in",
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python_version = "3.8",
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requirements_txt = "requirements_lock_3_8.txt",
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)
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compile_pip_requirements(
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name = "requirements_3_9",
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src = "requirements.in",

‎examples/multi_python_versions/requirements/requirements_lock_3_8.txt‎

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‎examples/multi_python_versions/tests/BUILD.bazel‎

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@@ -22,13 +22,6 @@ py_binary(
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srcs = ["version_default.py"],
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)
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py_binary(
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name = "version_3_8",
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srcs = ["version.py"],
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main = "version.py",
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python_version = "3.8",
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)
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py_binary(
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name = "version_3_9",
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srcs = ["version.py"],
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deps = ["//libs/my_lib"],
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)
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py_test(
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name = "my_lib_3_8_test",
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srcs = ["my_lib_test.py"],
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main = "my_lib_test.py",
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python_version = "3.8",
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deps = ["//libs/my_lib"],
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)
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py_test(
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srcs = ["my_lib_test.py"],
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env = {"VERSION_CHECK": "3.9"}, # The default defined in the WORKSPACE.
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)
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py_test(
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name = "version_3_8_test",
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srcs = ["version_test.py"],
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env = {"VERSION_CHECK": "3.8"},
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main = "version_test.py",
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python_version = "3.8",
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)
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py_test(
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name = "version_3_9_test",
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srcs = ["version_test.py"],
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},
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)
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sh_test(
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name = "version_test_binary_3_8",
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srcs = ["version_test.sh"],
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data = [":version_3_8"],
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env = {
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"VERSION_CHECK": "3.8",
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"VERSION_PY_BINARY": "$(rootpaths :version_3_8)",
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},
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)
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sh_test(
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name = "version_test_binary_3_9",
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srcs = ["version_test.sh"],

‎python/versions.bzl‎

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#
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# buildifier: disable=unsorted-dict-items
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TOOL_VERSIONS = {
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"3.8.10": {
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"url": "20210506/cpython-{python_version}-{platform}-pgo+lto-20210506T0943.tar.zst",
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"sha256": {
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"x86_64-apple-darwin": "8d06bec08db8cdd0f64f4f05ee892cf2fcbc58cfb1dd69da2caab78fac420238",
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"x86_64-unknown-linux-gnu": "aec8c4c53373b90be7e2131093caa26063be6d9d826f599c935c0e1042af3355",
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},
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"strip_prefix": "python/install",
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},
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"3.8.12": {
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"url": "20220227/cpython-{python_version}+20220227-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "f9a3cbb81e0463d6615125964762d133387d561b226a30199f5b039b20f1d944",
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# no aarch64-unknown-linux-gnu build available for 3.8.12
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"x86_64-apple-darwin": "f323fbc558035c13a85ce2267d0fad9e89282268ecb810e364fff1d0a079d525",
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"x86_64-pc-windows-msvc": "4658e08a00d60b1e01559b74d58ff4dd04da6df935d55f6268a15d6d0a679d74",
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"x86_64-unknown-linux-gnu": "5be9c6d61e238b90dfd94755051c0d3a2d8023ebffdb4b0fa4e8fedd09a6cab6",
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},
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"strip_prefix": "python",
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},
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"3.8.13": {
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"url": "20220802/cpython-{python_version}+20220802-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "ae4131253d890b013171cb5f7b03cadc585ae263719506f7b7e063a7cf6fde76",
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# no aarch64-unknown-linux-gnu build available for 3.8.13
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"x86_64-apple-darwin": "cd6e7c0a27daf7df00f6882eaba01490dd963f698e99aeee9706877333e0df69",
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"x86_64-pc-windows-msvc": "f20643f1b3e263a56287319aea5c3888530c09ad9de3a5629b1a5d207807e6b9",
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"x86_64-unknown-linux-gnu": "fb566629ccb5f76ef56d275a3f8017d683f1c20c5beb5d5f38b155ed11e16187",
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},
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"strip_prefix": "python",
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},
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"3.8.15": {
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"url": "20221106/cpython-{python_version}+20221106-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "1e0a92d1a4f5e6d4a99f86b1cbf9773d703fe7fd032590f3e9c285c7a5eeb00a",
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"aarch64-unknown-linux-gnu": "886ab33ced13c84bf59ce8ff79eba6448365bfcafea1bf415bd1d75e21b690aa",
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"x86_64-apple-darwin": "70b57f28c2b5e1e3dd89f0d30edd5bc414e8b20195766cf328e1b26bed7890e1",
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"x86_64-pc-windows-msvc": "2fdc3fa1c95f982179bbbaedae2b328197658638799b6dcb63f9f494b0de59e2",
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"x86_64-unknown-linux-gnu": "e47edfb2ceaf43fc699e20c179ec428b6f3e497cf8e2dcd8e9c936d4b96b1e56",
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},
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"strip_prefix": "python",
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},
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"3.8.16": {
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"url": "20230116/cpython-{python_version}+20230116-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "d1f408569d8807c1053939d7822b082a17545e363697e1ce3cfb1ee75834c7be",
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"aarch64-unknown-linux-gnu": "15d00bc8400ed6d94c665a797dc8ed7a491ae25c5022e738dcd665cd29beec42",
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"x86_64-apple-darwin": "484ba901f64fc7888bec5994eb49343dc3f9d00ed43df17ee9c40935aad4aa18",
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"x86_64-pc-windows-msvc": "b446bec833eaba1bac9063bb9b4aeadfdf67fa81783b4487a90c56d408fb7994",
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"x86_64-unknown-linux-gnu": "c890de112f1ae31283a31fefd2061d5c97bdd4d1bdd795552c7abddef2697ea1",
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},
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"strip_prefix": "python",
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},
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"3.8.17": {
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"url": "20230826/cpython-{python_version}+20230826-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "c6f7a130d0044a78e39648f4dae56dcff5a41eba91888a99f6e560507162e6a1",
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"aarch64-unknown-linux-gnu": "9f6d585091fe26906ff1dbb80437a3fe37a1e3db34d6ecc0098f3d6a78356682",
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"x86_64-apple-darwin": "155b06821607bae1a58ecc60a7d036b358c766f19e493b8876190765c883a5c2",
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"x86_64-pc-windows-msvc": "6428e1b4e0b4482d390828de7d4c82815257443416cb786abe10cb2466ca68cd",
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"x86_64-unknown-linux-gnu": "8d3e1826c0bb7821ec63288038644808a2d45553245af106c685ef5892fabcd8",
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},
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"strip_prefix": "python",
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},
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"3.8.18": {
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"url": "20240224/cpython-{python_version}+20240224-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "4d493a1792bf211f37f98404cc1468f09bd781adc2602dea0df82ad264c11abc",
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"aarch64-unknown-linux-gnu": "6588c9eed93833d9483d01fe40ac8935f691a1af8e583d404ec7666631b52487",
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"x86_64-apple-darwin": "7d2cd8d289d5e3cdd0a8c06c028c7c621d3d00ce44b7e2f08c1724ae0471c626",
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"x86_64-pc-windows-msvc": "dba923ee5df8f99db04f599e826be92880746c02247c8d8e4d955d4bc711af11",
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"x86_64-unknown-linux-gnu": "5ae36825492372554c02708bdd26b8dcd57e3dbf34b3d6d599ad91d93540b2b7",
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},
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"strip_prefix": "python",
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},
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"3.8.19": {
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"url": "20240726/cpython-{python_version}+20240726-{platform}-{build}.tar.gz",
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"sha256": {
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"aarch64-apple-darwin": "fe4af1b6bc59478d027ede43f6249cf7b9143558e171bdf8711247337623af57",
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"aarch64-unknown-linux-gnu": "8dc598aca7ad43ea20119324af98862d198d8990151c734a69f0fc9d16384b46",
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"x86_64-apple-darwin": "4bc990b35384c83b5b0b3071e91455ec203517e569f29f691b159f1a6b2a19b2",
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"x86_64-pc-windows-msvc": "4e8e9ddda82062d6e111108ab72f439acac4ba41b77d694548ef5dbf6b2b3319",
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"x86_64-unknown-linux-gnu": "e81ea4dd16e6057c8121bdbcb7b64e2956068ca019f244c814bc3ad907cb2765",
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},
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"strip_prefix": "python",
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},
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"3.8.20": {
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"url": "20241002/cpython-{python_version}+20241002-{platform}-{build}.tar.gz",
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"sha256": {

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