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from __future__ import annotations
import os
from typing import Any
from . import _config
from . import _log
from . import version
from ._integration.pyproject_reading import lazy_toml_load
log = _log.log.getChild("overrides")
PRETEND_KEY = "SETUPTOOLS_SCM_PRETEND_VERSION"
PRETEND_KEY_NAMED = PRETEND_KEY + "_FOR_{name}"
def read_named_env(
*, tool: str = "SETUPTOOLS_SCM", name: str, dist_name: str | None
) -> str | None:
if dist_name is not None:
val = os.environ.get(f"{tool}_{name}_FOR_{dist_name.upper()}")
if val is not None:
return val
return os.environ.get(f"{tool}_{name}")
def _read_pretended_version_for(
config: _config.Configuration,
) -> version.ScmVersion | None:
"""read a a overridden version from the environment
tries ``SETUPTOOLS_SCM_PRETEND_VERSION``
and ``SETUPTOOLS_SCM_PRETEND_VERSION_FOR_$UPPERCASE_DIST_NAME``
"""
log.debug("dist name: %s", config.dist_name)
pretended = read_named_env(name="PRETEND_VERSION", dist_name=config.dist_name)
if pretended:
# we use meta here since the pretended version
# must adhere to the pep to begin with
return version.meta(tag=pretended, preformatted=True, config=config)
else:
return None
def read_toml_overrides(dist_name: str | None) -> dict[str, Any]:
data = read_named_env(name="OVERRIDES", dist_name=dist_name)
if data:
if data[0] == "{":
data = "cheat=" + data
loaded = lazy_toml_load(data)
return loaded["cheat"] # type: ignore[no-any-return]
return lazy_toml_load(data)
else:
return {}
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