diff --git a/lib.nix b/lib.nix
index 1c7a2af..e6836b6 100644
--- a/lib.nix
+++ b/lib.nix
@@ -141,12 +141,11 @@ in
       script = pkgs.writeShellApplication {
         name = "run-postgres";
         text = ''
-            set -euo pipefail
-            export PGDATA=$(pwd)/${data_dir} PGHOST=$(pwd)/${runtimeDir} PGPORT=${builtins.toString port}
-          pwd
-            mkdir -p ${lib.escapeShellArg runtimeDir}
-            ${setupScript}/bin/setup-postgres
-            exec ${package}/bin/postgres
+          set -euo pipefail
+          export PGDATA=${data_dir} PGHOST=${runtimeDir} PGPORT=${builtins.toString port}
+          mkdir -p ${lib.escapeShellArg runtimeDir}
+          ${setupScript}/bin/setup-postgres
+          ${package}/bin/postgres
         '';
       };
     in