1 files changed, 14 insertions, 0 deletions
diff --git a/dhall/src/error/mod.rs b/dhall/src/error/mod.rs
index ef4d41f..0cfa93c 100644
--- a/dhall/src/error/mod.rs
+++ b/dhall/src/error/mod.rs
@@ -22,6 +22,7 @@ pub enum ErrorKind {
     Encode(EncodeError),
     Resolve(ImportError),
     Typecheck(TypeError),
+    Cache(CacheError),
 }
 
 #[derive(Debug)]
@@ -57,6 +58,13 @@ pub enum TypeMessage {
     Custom(String),
 }
 
+#[derive(Debug)]
+pub enum CacheError {
+    MissingConfiguration,
+    InitialisationError { cause: IOError },
+    CacheHashInvalid,
+}
+
 impl Error {
     pub fn new(kind: ErrorKind) -> Self {
         Error { kind }
@@ -93,6 +101,7 @@ impl std::fmt::Display for Error {
             ErrorKind::Encode(err) => write!(f, "{:?}", err),
             ErrorKind::Resolve(err) => write!(f, "{:?}", err),
             ErrorKind::Typecheck(err) => write!(f, "{}", err),
+            ErrorKind::Cache(err) => write!(f, "{:?}", err),
         }
     }
 }
@@ -138,3 +147,8 @@ impl From<TypeError> for Error {
         ErrorKind::Typecheck(err).into()
     }
 }
+impl From<CacheError> for Error {
+    fn from(err: CacheError) -> Error {
+        ErrorKind::Cache(err).into()
+    }
+}