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-rw-r--r--lib/spack/external/_vendoring/attr/converters.pyi13
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/spack/external/_vendoring/attr/converters.pyi b/lib/spack/external/_vendoring/attr/converters.pyi
new file mode 100644
index 0000000000..0f58088a37
--- /dev/null
+++ b/lib/spack/external/_vendoring/attr/converters.pyi
@@ -0,0 +1,13 @@
+from typing import Callable, Optional, TypeVar, overload
+
+from . import _ConverterType
+
+_T = TypeVar("_T")
+
+def pipe(*validators: _ConverterType) -> _ConverterType: ...
+def optional(converter: _ConverterType) -> _ConverterType: ...
+@overload
+def default_if_none(default: _T) -> _ConverterType: ...
+@overload
+def default_if_none(*, factory: Callable[[], _T]) -> _ConverterType: ...
+def to_bool(val: str) -> bool: ...