Don’t require `ca-derivations` when `__contentAddressed = false`

If we explicitely opt-out of it, there’s no need to require the
experimental feature

1 files changed, 2 insertions, 1 deletions

diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 6b3cafec8..f05cca169 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -985,8 +985,9 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
             }
 
             if (i->name == state.sContentAddressed) {
-                settings.requireExperimentalFeature(Xp::CaDerivations);
                 contentAddressed = state.forceBool(*i->value, pos);
+                if (contentAddressed)
+                    settings.requireExperimentalFeature(Xp::CaDerivations);
             }
 
             /* The `args' attribute is special: it supplies the