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internal(pystar): Only respect RULES_PYTHON_ENABLE_PYSTAR env var for Bazel 7+ #1698

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Jan 18, 2024
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20 changes: 10 additions & 10 deletions python/private/internal_config_repo.bzl
Original file line number Diff line number Diff line change
Expand Up @@ -18,8 +18,6 @@ such as globals available to Bazel versions, or propagating user environment
settings for rules to later use.
"""

load("//python/private:bzlmod_enabled.bzl", "BZLMOD_ENABLED")

_ENABLE_PYSTAR_ENVVAR_NAME = "RULES_PYTHON_ENABLE_PYSTAR"
_ENABLE_PYSTAR_DEFAULT = "0"

Expand Down Expand Up @@ -58,18 +56,20 @@ bzl_library(
"""

def _internal_config_repo_impl(rctx):
enable_pystar = _bool_from_environ(rctx, _ENABLE_PYSTAR_ENVVAR_NAME, _ENABLE_PYSTAR_DEFAULT)
pystar_requested = _bool_from_environ(rctx, _ENABLE_PYSTAR_ENVVAR_NAME, _ENABLE_PYSTAR_DEFAULT)

# Bazel 7+ (dev and later) has native.starlark_doc_extract, and thus the
# py_internal global, which are necessary for the pystar implementation.
if pystar_requested and hasattr(native, "starlark_doc_extract"):
enable_pystar = pystar_requested
else:
enable_pystar = False

rctx.file("rules_python_config.bzl", _CONFIG_TEMPLATE.format(
enable_pystar = enable_pystar,
))

if enable_pystar or (
# Bazel 7+ (dev and later) has native.starlark_doc_extract, and thus the py_internal global
hasattr(native, "starlark_doc_extract") and
# The logic to allow the symbol doesn't work properly under bzlmod,
# even if the symbol is otherwise functional.
not BZLMOD_ENABLED
):
if enable_pystar:
shim_content = _PY_INTERNAL_SHIM
py_internal_dep = '"@rules_python//tools/build_defs/python/private:py_internal_renamed_bzl"'
else:
Expand Down
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