chore(tvix/eval): implement From<OrdMap<..>> for NixAttrs r/5884

Again simplifying some code down the line, where bits of code that
construct attribute sets already have the final structure available.

Change-Id: I0bb7a1daa63298122b51be73d35d695a4f73f8b0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/8140
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI

1 files changed, 6 insertions, 0 deletions

diff --git a/tvix/eval/src/value/attrs.rs b/tvix/eval/src/value/attrs.rs
index 9b7a683ce3..b9c5adba19 100644
--- a/tvix/eval/src/value/attrs.rs
+++ b/tvix/eval/src/value/attrs.rs
@@ -94,6 +94,12 @@ impl AttrsRep {
 #[derive(Clone, Debug, Default)]
 pub struct NixAttrs(pub(super) AttrsRep);
 
+impl From<OrdMap<NixString, Value>> for NixAttrs {
+    fn from(map: OrdMap<NixString, Value>) -> Self {
+        NixAttrs(AttrsRep::Im(map))
+    }
+}
+
 impl<K, V> FromIterator<(K, V)> for NixAttrs
 where
     NixString: From<K>,