just-mr: fix launcher forwarding

A local launcher should be forwarded, if it is different to
the default launcher (which is ["env", "--"]); in particular,
an explictly empy launcher should be forwarded.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/other_tools/just_mr/main.cpp b/src/other_tools/just_mr/main.cpp
index 70eaee3c..bedda552 100644
--- a/src/other_tools/just_mr/main.cpp
+++ b/src/other_tools/just_mr/main.cpp
@@ -1286,7 +1286,7 @@ void DefaultReachableRepositories(
         cmd.emplace_back(*arguments.common.just_mr_paths->root);
     }
     if (use_launcher and arguments.common.local_launcher and
-        not arguments.common.local_launcher->empty()) {
+        (arguments.common.local_launcher != kDefaultLauncher)) {
         cmd.emplace_back("--local-launcher");
         cmd.emplace_back(
             nlohmann::json(*arguments.common.local_launcher).dump());