1 files changed, 8 insertions, 0 deletions
diff --git a/bsie/base/errors.py b/bsie/base/errors.py
index a86b7e8..760351f 100644
--- a/bsie/base/errors.py
+++ b/bsie/base/errors.py
@@ -9,7 +9,9 @@ import typing
 
 # exports
 __all__: typing.Sequence[str] = (
+    'BuilderError',
     'ExtractorError',
+    'LoaderError',
     'ReaderError',
     )
 
@@ -19,6 +21,12 @@ __all__: typing.Sequence[str] = (
 class _BSIEError(Exception):
     """Generic BSIE error."""
 
+class BuilderError(_BSIEError):
+    """The Builder failed to create an instance."""
+
+class LoaderError(BuilderError):
+    """Failed to load a module or class."""
+
 class ExtractorError(_BSIEError):
     """The Extractor failed to process the given content."""