diff --git a/bin/eufonctl.sh b/bin/eufonctl.sh
new file mode 100755
index 0000000..63aac8b
--- /dev/null
+++ b/bin/eufonctl.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+SOCAT=socat
+display=$1
+test -n "$display" || display=$WAYLAND_DISPLAY
+test -n "$display" || display=wayland-0
+
+socket_name="${XDG_RUNTIME_DIR}/kiwmi-repl.${display}.socket"
+
+${SOCAT} - unix-connect:$socket_name
diff --git a/default.nix b/default.nix
index bb862a6..38e092b 100644
--- a/default.nix
+++ b/default.nix
@@ -10,6 +10,7 @@
 , gtk3
 , gtk-layer-shell
 , lua5_3
+, socat
 } :
 let
   lua = lua5_3;
@@ -63,5 +64,12 @@ stdenv.mkDerivation {
     webkitgtk
   ];
 
+  installPhase = ''
+    mkdir -p $out/bin
+    substitute bin/eufon.sh $out/bin/eufon \
+      --replace SOCAT=socat SOCAT=${socat}/bin/socat
+    chmod +x $out/bin/eufon
+  '';
+
   src = ./.;
 }