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-rw-r--r--tvix/eval/src/errors.rs15
1 files changed, 15 insertions, 0 deletions
diff --git a/tvix/eval/src/errors.rs b/tvix/eval/src/errors.rs
index ccc2d8976440..8c0d6124201e 100644
--- a/tvix/eval/src/errors.rs
+++ b/tvix/eval/src/errors.rs
@@ -134,6 +134,9 @@ pub enum ErrorKind {
     /// Errors converting JSON to a value
     FromJsonError(String),
 
+    /// Errors converting TOML to a value
+    FromTomlError(String),
+
     /// An unexpected argument was supplied to a function that takes formal parameters
     UnexpectedArgument {
         arg: NixString,
@@ -246,6 +249,12 @@ impl From<serde_json::Error> for ErrorKind {
     }
 }
 
+impl From<toml::de::Error> for ErrorKind {
+    fn from(err: toml::de::Error) -> Self {
+        Self::FromTomlError(format!("error in TOML serialization: {err}"))
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct Error {
     kind: ErrorKind,
@@ -434,6 +443,10 @@ to a missing value in the attribute set(s) included via `with`."#,
                 write!(f, "Error converting JSON to a Nix value: {msg}")
             }
 
+            ErrorKind::FromTomlError(msg) => {
+                write!(f, "Error converting TOML to a Nix value: {msg}")
+            }
+
             ErrorKind::UnexpectedArgument { arg, .. } => {
                 write!(
                     f,
@@ -749,6 +762,7 @@ impl Error {
             | ErrorKind::ImportCompilerError { .. }
             | ErrorKind::IO { .. }
             | ErrorKind::FromJsonError(_)
+            | ErrorKind::FromTomlError(_)
             | ErrorKind::Xml(_)
             | ErrorKind::TvixError(_)
             | ErrorKind::TvixBug { .. }
@@ -795,6 +809,7 @@ impl Error {
             ErrorKind::RelativePathResolution(_) => "E032",
             ErrorKind::DivisionByZero => "E033",
             ErrorKind::Xml(_) => "E034",
+            ErrorKind::FromTomlError(_) => "E035",
 
             // Special error code for errors from other Tvix
             // components. We may want to introduce a code namespacing