--- a/rust/hg-core/src/repo.rs	Tue Oct 01 13:20:40 2024 +0200
+++ b/rust/hg-core/src/repo.rs	Tue Oct 01 13:45:18 2024 +0200
@@ -20,7 +20,7 @@
 use crate::utils::SliceExt;
 use crate::vfs::{is_dir, is_file, VfsImpl};
 use crate::{
-    requirements, NodePrefix, RevlogDataConfig, RevlogDeltaConfig,
+    exit_codes, requirements, NodePrefix, RevlogDataConfig, RevlogDeltaConfig,
     RevlogFeatureConfig, RevlogType, RevlogVersionOptions, UncheckedRevision,
 };
 use crate::{DirstateError, RevlogOpenOptions};
@@ -68,6 +68,32 @@
     }
 }
 
+impl From<RepoError> for HgError {
+    fn from(value: RepoError) -> Self {
+        match value {
+            RepoError::NotFound { at } => HgError::abort(
+                format!(
+                    "abort: no repository found in '{}' (.hg not found)!",
+                    at.display()
+                ),
+                exit_codes::ABORT,
+                None,
+            ),
+            RepoError::ConfigParseError(config_parse_error) => {
+                HgError::Abort {
+                    message: String::from_utf8_lossy(
+                        &config_parse_error.message,
+                    )
+                    .to_string(),
+                    detailed_exit_code: exit_codes::CONFIG_PARSE_ERROR_ABORT,
+                    hint: None,
+                }
+            }
+            RepoError::Other(hg_error) => hg_error,
+        }
+    }
+}
+
 impl Repo {
     /// tries to find nearest repository root in current working directory or
     /// its ancestors