:::{default-domain} bzl ::: :::{bzl:currentfile} //python:BUILD.bazel :::
:::{bzl:target} toolchain_type
Identifier for the toolchain type for the target platform.
This toolchain type gives information about the runtime for the target platform. It is typically implemented by the {obj}py_runtime
rule.
::::{seealso} {any}Custom Toolchains
for how to define custom toolchains ::::
:::
:::{bzl:target} exec_tools_toolchain_type
Identifier for the toolchain type for exec tools used to build Python targets.
This toolchain type gives information about tools needed to build Python targets at build time. It is typically implemented by the {obj}py_exec_tools_toolchain
rule.
::::{seealso} {any}Custom Toolchains
for how to define custom toolchains :::: :::
:::{bzl:target} current_py_toolchain
Helper target to resolve to the consumer's current Python toolchain. This target provides:
PyRuntimeInfo
: The consuming target's target toolchain information:::
::::{target} autodetecting_toolchain
Legacy toolchain; despite its name, it doesn't autodetect anything.
:::{deprecated} 0.34.0
Use {obj}@rules_python//python/runtime_env_toolchains:all
instead. ::: ::::
:::{target} none A special target so that label attributes with default values can be set to None
.
Bazel interprets None
to mean “use the default value”, which makes it impossible to have a label attribute with a default value that is optional. To work around this, a target with a special provider is used; internally rules check for this, then treat the value as None
.
::::{versionadded} 0.36.0 ::::
:::