diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/default.nix b/default.nix
index 92db2ed..96824b2 100644
--- a/default.nix
+++ b/default.nix
@@ -1,7 +1,10 @@
-{ setuptools, buildPythonPackage }:
+{ setuptools, buildPythonPackage, pkgs, toPythonModule }:
 buildPythonPackage {
   name = "buildbot-nix";
   format = "pyproject";
   src = ./.;
   nativeBuildInputs = [ setuptools ];
+  propagatedBuildInputs = [
+    (toPythonModule pkgs.buildbot)
+  ];
 }
diff --git a/flake.nix b/flake.nix
index 250bc63..86e71d0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -42,6 +42,11 @@
               pkgs.ruff
             ];
           };
+          devShells.default = pkgs.mkShell {
+            packages = [
+              self'.packages.buildbot-nix
+            ];
+          };
           packages.buildbot-nix = pkgs.python3.pkgs.callPackage ./default.nix { };
           checks =
             let