1 files changed, 36 insertions, 0 deletions
diff --git a/tvix/nix-compat/src/derivation/output.rs b/tvix/nix-compat/src/derivation/output.rs
new file mode 100644
index 000000000000..4bfc7bf8014d
--- /dev/null
+++ b/tvix/nix-compat/src/derivation/output.rs
@@ -0,0 +1,36 @@
+use crate::derivation::OutputError;
+use crate::nixhash::{HashAlgo, NixHashWithMode};
+use crate::store_path::StorePath;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
+pub struct Output {
+    pub path: String,
+
+    #[serde(flatten)]
+    pub hash_with_mode: Option<NixHashWithMode>,
+}
+
+impl Output {
+    pub fn is_fixed(&self) -> bool {
+        self.hash_with_mode.is_some()
+    }
+
+    pub fn validate(&self, validate_output_paths: bool) -> Result<(), OutputError> {
+        if let Some(hash) = &self.hash_with_mode {
+            match hash {
+                NixHashWithMode::Flat(h) | NixHashWithMode::Recursive(h) => {
+                    if h.algo != HashAlgo::Sha1 || h.algo != HashAlgo::Sha256 {
+                        return Err(OutputError::InvalidHashAlgo(h.algo.to_string()));
+                    }
+                }
+            }
+        }
+        if validate_output_paths {
+            if let Err(e) = StorePath::from_absolute_path(&self.path) {
+                return Err(OutputError::InvalidOutputPath(self.path.to_string(), e));
+            }
+        }
+        Ok(())
+    }
+}