diff options
-rw-r--r-- | lib/spack/spack/database.py | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/spack/spack/database.py b/lib/spack/spack/database.py index 4be5b6665f..a8fa85c558 100644 --- a/lib/spack/spack/database.py +++ b/lib/spack/spack/database.py @@ -1216,7 +1216,7 @@ class Database: match = self.query_one(spec, **kwargs) if match: return match.dag_hash() - raise KeyError("No such spec in database! %s" % spec) + raise NoSuchSpecError(spec) return key @_autospec @@ -1672,3 +1672,17 @@ class InvalidDatabaseVersionError(SpackError): @property def database_version_message(self): return f"The expected DB version is '{self.expected}', but '{self.found}' was found." + + +class NoSuchSpecError(KeyError): + """Raised when a spec is not found in the database.""" + + def __init__(self, spec): + self.spec = spec + super().__init__(spec) + + def __str__(self): + # This exception is raised frequently, and almost always + # caught, so ensure we don't pay the cost of Spec.__str__ + # unless the exception is actually printed. + return f"No such spec in database: {self.spec}" |