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"""Rules to create python distribution files and properly name them"""
load("@bazel_skylib//rules:common_settings.bzl", "BuildSettingInfo")
load("@system_python//:version.bzl", "SYSTEM_PYTHON_VERSION")
def _get_suffix(limited_api, python_version, cpu):
suffix = "pyd" if ("win" in cpu) else "so"
if limited_api == True:
if "win" not in cpu:
suffix = "abi3." + suffix
return "." + suffix
if "win32" in cpu or "win64" in cpu:
if "win32" in cpu:
abi = "win32"
elif "win64" in cpu:
abi = "win_amd64"
else:
fail("Unsupported CPU: " + cpu)
return ".cp{}-{}.{}".format(python_version, abi, suffix)
if python_version == "system":
python_version = SYSTEM_PYTHON_VERSION
if int(python_version) < 38:
python_version += "m"
abis = {
"darwin": "darwin",
"osx-x86_64": "darwin",
"osx-aarch_64": "darwin",
"linux-aarch_64": "aarch64-linux-gnu",
"linux-x86_64": "x86_64-linux-gnu",
"k8": "x86_64-linux-gnu",
}
return ".cpython-{}-{}.{}".format(python_version, abis[cpu], suffix)
fail("Unsupported combination of flags")
def _py_dist_module_impl(ctx):
base_filename = ctx.attr.module_name.replace(".", "/")
suffix = _get_suffix(
limited_api = ctx.attr._limited_api[BuildSettingInfo].value,
python_version = ctx.attr._python_version[BuildSettingInfo].value,
cpu = ctx.var["TARGET_CPU"],
)
filename = base_filename + suffix
file = ctx.actions.declare_file(filename)
src = ctx.attr.extension[DefaultInfo].files.to_list()[0]
ctx.actions.run(
executable = "cp",
arguments = [src.path, file.path],
inputs = [src],
outputs = [file],
)
return [
DefaultInfo(files = depset([file])),
]
_py_dist_module_rule = rule(
output_to_genfiles = True,
implementation = _py_dist_module_impl,
fragments = ["cpp"],
attrs = {
"module_name": attr.string(mandatory = True),
"extension": attr.label(
mandatory = True,
providers = [CcInfo],
),
"_limited_api": attr.label(default = "//python:limited_api"),
"_python_version": attr.label(default = "//python:python_version"),
"_cc_toolchain": attr.label(
default = "@bazel_tools//tools/cpp:current_cc_toolchain",
),
},
)
def py_dist_module(name, module_name, extension):
_py_dist_module_rule(
name = name,
module_name = module_name,
extension = extension,
)
def _py_dist_transition_impl(settings, attr):
_ignore = (settings) # @unused
transitions = []
for cpu, version in attr.limited_api_wheels.items():
transitions.append({
"//command_line_option:cpu": cpu,
"//python:python_version": version,
"//python:limited_api": True,
})
for version in attr.full_api_versions:
for cpu in attr.full_api_cpus:
transitions.append({
"//command_line_option:cpu": cpu,
"//python:python_version": version,
"//python:limited_api": False,
})
return transitions
_py_dist_transition = transition(
implementation = _py_dist_transition_impl,
inputs = [],
outputs = [
"//command_line_option:cpu",
"//python:python_version",
"//python:limited_api",
],
)
def _py_dist_impl(ctx):
binary_files = [dep[DefaultInfo].files for dep in ctx.attr.binary_wheel]
pure_python_files = [ctx.attr.pure_python_wheel[DefaultInfo].files]
return [
DefaultInfo(files = depset(
transitive = binary_files + pure_python_files,
)),
]
py_dist = rule(
implementation = _py_dist_impl,
attrs = {
"binary_wheel": attr.label(
mandatory = True,
cfg = _py_dist_transition,
),
"pure_python_wheel": attr.label(mandatory = True),
"limited_api_wheels": attr.string_dict(),
"full_api_versions": attr.string_list(),
"full_api_cpus": attr.string_list(),
"_allowlist_function_transition": attr.label(
default = "@bazel_tools//tools/allowlists/function_transition_allowlist",
),
},
)