`:quit` in the debugger should quit the whole program

(cherry picked from commit 2a8fe9a93837733e9dd9ed5c078734a35b203e14)
Change-Id: I71dadfef6b24d9272b206e9e2c408040559d8a1c

1 files changed, 20 insertions, 0 deletions

diff --git a/src/libexpr/repl-exit-status.hh b/src/libexpr/repl-exit-status.hh
new file mode 100644
index 000000000..08299ff61
--- /dev/null
+++ b/src/libexpr/repl-exit-status.hh
@@ -0,0 +1,20 @@
+#pragma once
+
+namespace nix {
+
+/**
+ * Exit status returned from the REPL.
+ */
+enum class ReplExitStatus {
+    /**
+     * The user exited with `:quit`. The program (e.g., if the REPL was acting
+     * as the debugger) should exit.
+     */
+    QuitAll,
+    /**
+     * The user exited with `:continue`. The program should continue running.
+     */
+    Continue,
+};
+
+}