Fix lambda body parsing

src/imp/parser.rs

@@ -95,7 +95,7 @@ impl<'a> PyParser<'a> {
         }
       }
       let names = self.list_like(|p| parse_lam_var(p), "", ":", ",", false, 1)?;
-      let bod = self.parse_expr(inline, true)?;
+      let bod = self.parse_expr(inline, false)?;
       Ok(Expr::Lam { names, bod: Box::new(bod) })
     } else if self.starts_with("(") {
       self.advance_one();

tests/golden_tests/run_file/filter_bool_id.bend

@@ -0,0 +1,17 @@
+type Bool:
+  T
+  F
+
+def filter(f, ls):
+  match ls:
+    case List/Nil:
+      return List/Nil
+    case List/Cons:
+      match f(ls.head):
+        case Bool/T:
+          return List/Cons(ls.head, filter(f, ls.tail))
+        case Bool/F:
+          return filter(f, ls.tail)
+
+def main:
+  return filter(lambda x: x, [Bool/T])

tests/snapshots/run_file__filter_bool_id.bend.snap

@@ -0,0 +1,9 @@
+---
+source: tests/golden_tests.rs
+input_file: tests/golden_tests/run_file/filter_bool_id.bend
+---
+NumScott:
+[Bool/T]
+
+Scott:
+[Bool/T]