diff --git a/default.nix b/default.nix
index c6e23fa..76909d6 100644
--- a/default.nix
+++ b/default.nix
@@ -17,4 +17,13 @@ pkgs.haskell-nix.project {
     name = "rel8";
     src = ./.;
   };
+
+  modules = [ 
+    { packages.rel8 = {
+        preCheck = ''
+          export PATH="${pkgs.postgresql}/bin:${"$PATH"}"
+        '';
+      };
+    }
+  ];
 }
diff --git a/jobs.nix b/jobs.nix
index 42bc5a5..3e6e3c8 100644
--- a/jobs.nix
+++ b/jobs.nix
@@ -1,5 +1,5 @@
-let project = import ./.;
+let rel8 = (import ./.).hsPkgs.rel8;
 in { 
-  rel8 = project.hsPkgs.components.library; 
-  tests = project.hsPkgs.components.checks.tests; 
+  rel8 = rel8.components.library; 
+  tests = rel8.checks.tests; 
 }