diff options
Diffstat (limited to 'src/libexpr/eval.cc')
| -rw-r--r-- | src/libexpr/eval.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc index 0470deee9c0c..77cab55d034c 100644 --- a/src/libexpr/eval.cc +++ b/src/libexpr/eval.cc @@ -137,6 +137,8 @@ Expr evalExpr2(EvalState & state, Expr e) /* Any encountered variables must be undeclared or primops. */ if (atMatch(m, e) >> "Var" >> s1) { if (s1 == "null") return primNull(state); + if (s1 == "true") return ATmake("Bool(True)"); + if (s1 == "false") return ATmake("Bool(False)"); return e; } |