1 files changed, 33 insertions, 5 deletions
diff --git a/lib/portage/exception.py b/lib/portage/exception.py
index ec8ea1980..7b48aa919 100644
--- a/lib/portage/exception.py
+++ b/lib/portage/exception.py
@@ -1,4 +1,4 @@
-# Copyright 1998-2020 Gentoo Authors
+# Copyright 1998-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 import signal
@@ -30,6 +30,10 @@ class CorruptionError(PortageException):
     """Corruption indication"""
 
 
+class CorruptionKeyError(CorruptionError, PortageKeyError):
+    """KeyError raised when corruption is detected (cause should be accesssible as __cause__)"""
+
+
 class InvalidDependString(PortageException):
     """An invalid depend string has been encountered"""
 
@@ -159,7 +163,7 @@ class AmbiguousPackageName(ValueError, PortageException):
 
     def __init__(self, *args, **kwargs):
         self.args = args
-        super(AmbiguousPackageName, self).__init__(*args, **kwargs)
+        super().__init__(*args, **kwargs)
 
     def __str__(self):
         return ValueError.__str__(self)
@@ -181,6 +185,26 @@ class InvalidPackageName(PortagePackageException):
     """Malformed package name"""
 
 
+class InvalidBinaryPackageFormat(PortagePackageException):
+    """Invalid Binary Package Format"""
+
+
+class InvalidCompressionMethod(PortagePackageException):
+    """Invalid or unsupported compression method"""
+
+
+class CompressorNotFound(PortagePackageException):
+    """A required compressor binary was not available or executable"""
+
+
+class CompressorOperationFailed(PortagePackageException):
+    """An error occurred during external operation"""
+
+
+class SignedPackage(PortagePackageException):
+    """Unable to update a signed package"""
+
+
 class InvalidAtom(PortagePackageException):
     """Malformed atom spec"""
 
@@ -201,10 +225,10 @@ class UnsupportedAPIException(PortagePackageException):
             eapi = str(eapi)
         eapi = eapi.lstrip("-")
         msg = _(
-            "Unable to do any operations on '%(cpv)s', since "
+            f"Unable to do any operations on '{self.cpv}', since "
             "its EAPI is higher than this portage version's. Please upgrade"
-            " to a portage version that supports EAPI '%(eapi)s'."
-        ) % {"cpv": self.cpv, "eapi": eapi}
+            f" to a portage version that supports EAPI '{eapi}'."
+        )
         return _unicode_decode(msg, encoding=_encodings["content"], errors="replace")
 
 
@@ -216,6 +240,10 @@ class DigestException(SignatureException):
     """A problem exists in the digest"""
 
 
+class GPGException(SignatureException):
+    """GPG operation failed"""
+
+
 class MissingSignature(SignatureException):
     """Signature was not present in the checked file"""