feat(tvix/eval): Support builtins.bitAnd r/4867

Bitwise `and` on integers.

Change-Id: I9f2a9182a057af26906683acd97a40dfabbdded8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6548
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI

1 files changed, 7 insertions, 0 deletions

diff --git a/tvix/eval/src/builtins/mod.rs b/tvix/eval/src/builtins/mod.rs
index 605c7c2607ef..009758fe0f33 100644
--- a/tvix/eval/src/builtins/mod.rs
+++ b/tvix/eval/src/builtins/mod.rs
@@ -101,6 +101,13 @@ fn pure_builtins() -> Vec<Builtin> {
                 Ok(Value::List(NixList::construct(output.len(), output)))
             })
         }),
+        Builtin::new("bitAnd", 2, |args, vm| {
+            force!(vm, &args[0], x, {
+                force!(vm, &args[1], y, {
+                    Ok(Value::Integer(x.as_int()? & y.as_int()?))
+                })
+            })
+        }),
         Builtin::new("catAttrs", 2, |mut args, _| {
             let list = args.pop().unwrap().to_list()?;
             let key = args.pop().unwrap().to_str()?;