Currently, when creating a ScieConfiguration from PlatformSpecs, each platform spec translates to a target system platform and a provider:
|
if platform_spec.impl in ("py", "cp"): |
|
# Python Build Standalone does not support CPython<3.8. |
|
if plat_python_version < (3, 8): |
|
continue |
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provider = Provider.PythonBuildStandalone |
|
elif "pp" == platform_spec.impl: |
|
# PyPy distributions for Linux aarch64 start with 3.7 (and PyPy always releases for |
|
# 2.7). |
|
if ( |
|
SysPlatform.LINUX_AARCH64 is scie_platform |
|
and plat_python_version[0] == 3 |
|
and plat_python_version < (3, 7) |
|
): |
|
continue |
|
# PyPy distributions are not available for Linux armv7l |
|
if SysPlatform.LINUX_ARMV7L is scie_platform: |
|
continue |
|
# PyPy distributions for Linux ppc64le are only available for 2.7 and 3.{5,6}. |
|
if ( |
|
SysPlatform.LINUX_PPC64LE is scie_platform |
|
and plat_python_version[0] == 3 |
|
and plat_python_version >= (3, 7) |
|
): |
|
continue |
|
# PyPy distributions for Mac arm64 start with 3.8 (and PyPy always releases for |
|
# 2.7). |
|
if ( |
|
SysPlatform.MACOS_AARCH64 is scie_platform |
|
and plat_python_version[0] == 3 |
|
and plat_python_version < (3, 8) |
|
): |
|
continue |
|
provider = Provider.PyPy |
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else: |
|
# Pex only supports platform independent Python, CPython and PyPy. |
|
continue |
However, when we generate InterpreterDistributions we use just 1 provider per target system platform even if two different ones might have been "chosen" via PlatformSpecs. The one used is currently last-wins:
|
scie_targets = tuple( |
|
InterpreterDistribution( |
|
provider=provider, |
|
platform=scie_platform, |
|
release=( |
|
options.pbs_release |
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if Provider.PythonBuildStandalone is provider |
|
else options.pypy_release |
|
), |
|
version=max(python_versions), |
|
) |
|
for scie_platform, python_versions in sorted(python_versions_by_platform.items()) |
|
) |
