diff options
Diffstat (limited to 'tvix/eval/src/value/mod.rs')
| -rw-r--r-- | tvix/eval/src/value/mod.rs | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/tvix/eval/src/value/mod.rs b/tvix/eval/src/value/mod.rs index 8a2ab19961..b628d7c4ee 100644 --- a/tvix/eval/src/value/mod.rs +++ b/tvix/eval/src/value/mod.rs @@ -275,11 +275,14 @@ impl Value { // Optimised attribute set comparison (Value::Attrs(a1), Value::Attrs(a2)) => Ok(Rc::ptr_eq(a1, a2) || a1.nix_eq(a2, vm)?), - // If either value is a thunk, the inner value must be - // compared instead. The compiler should ensure that - // thunks under comparison have been forced, otherwise it - // is a bug. - (Value::Thunk(lhs), Value::Thunk(rhs)) => Ok(*lhs.value() == *rhs.value()), + // If either value is a thunk, the thunk should be forced, and then the resulting value + // must be compared instead. + (Value::Thunk(lhs), Value::Thunk(rhs)) => { + lhs.force(vm)?; + rhs.force(vm)?; + + Ok(*lhs.value() == *rhs.value()) + } (Value::Thunk(lhs), rhs) => Ok(&*lhs.value() == rhs), (lhs, Value::Thunk(rhs)) => Ok(lhs == &*rhs.value()), |