diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..92db2ed
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,7 @@
+{ setuptools, buildPythonPackage }:
+buildPythonPackage {
+  name = "buildbot-nix";
+  format = "pyproject";
+  src = ./.;
+  nativeBuildInputs = [ setuptools ];
+}
diff --git a/flake.lock b/flake.lock
index 5094dcc..faa9355 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1696343447,
-        "narHash": "sha256-B2xAZKLkkeRFG5XcHHSXXcP7To9Xzr59KXeZiRf4vdQ=",
+        "lastModified": 1698579227,
+        "narHash": "sha256-KVWjFZky+gRuWennKsbo6cWyo7c/z/VgCte5pR9pEKg=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "c9afaba3dfa4085dbd2ccb38dfade5141e33d9d4",
+        "rev": "f76e870d64779109e41370848074ac4eaa1606ec",
         "type": "github"
       },
       "original": {
@@ -22,16 +22,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1698266953,
-        "narHash": "sha256-jf72t7pC8+8h8fUslUYbWTX5rKsRwOzRMX8jJsGqDXA=",
+        "lastModified": 1698653593,
+        "narHash": "sha256-4SW5hJ7ktIO6j1+aNah0c9u+XDxjR4uYwPVtkVZynrs=",
         "owner": "Nixos",
         "repo": "nixpkgs",
-        "rev": "75a52265bda7fd25e06e3a67dee3f0354e73243c",
+        "rev": "423b31f1b24ec8d82baec9a5bb969da892010e6d",
         "type": "github"
       },
       "original": {
         "owner": "Nixos",
-        "ref": "nixpkgs-unstable",
+        "ref": "nixos-unstable-small",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -50,11 +50,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1697388351,
-        "narHash": "sha256-63N2eBpKaziIy4R44vjpUu8Nz5fCJY7okKrkixvDQmY=",
+        "lastModified": 1698438538,
+        "narHash": "sha256-AWxaKTDL3MtxaVTVU5lYBvSnlspOS0Fjt8GxBgnU0Do=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "aae39f64f5ecbe89792d05eacea5cb241891292a",
+        "rev": "5deb8dc125a9f83b65ca86cf0c8167c46593e0b1",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 6740723..53c1036 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,7 +3,7 @@
   description = "A nixos module to make buildbot a proper Nix-CI.";
 
   inputs = {
-    nixpkgs.url = "github:Nixos/nixpkgs/nixpkgs-unstable";
+    nixpkgs.url = "github:Nixos/nixpkgs/nixos-unstable-small";
     flake-parts.url = "github:hercules-ci/flake-parts";
     flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
 
@@ -39,6 +39,7 @@
               pkgs.bashInteractive
             ];
           };
+          packages.buildbot-nix = pkgs.python3.pkgs.callPackage ./default.nix { };
           checks =
             let
               nixosMachines = lib.mapAttrs' (name: config: lib.nameValuePair "nixos-${name}" config.config.system.build.toplevel) ((lib.filterAttrs (_: config: config.pkgs.system == system)) self.nixosConfigurations);
diff --git a/nix/master.nix b/nix/master.nix
index e06edd8..ce0756f 100644
--- a/nix/master.nix
+++ b/nix/master.nix
@@ -86,8 +86,6 @@ in
     services.buildbot-master = {
       enable = true;
       extraImports = ''
-        import sys
-        sys.path.append("${../buildbot_nix}")
         from datetime import timedelta
         from buildbot_nix import GithubConfig, NixConfigurator
       '';
@@ -130,7 +128,6 @@ in
         ps.treq
         ps.psycopg2
         (ps.toPythonModule pkgs.buildbot-worker)
-        ps.setuptools
         pkgs.buildbot-plugins.www
         pkgs.buildbot-plugins.www-react
         pkgs.buildbot-plugins.console-view
@@ -138,10 +135,12 @@ in
         pkgs.buildbot-plugins.grid-view
         pkgs.buildbot-plugins.wsgi-dashboards
         pkgs.buildbot-plugins.badges
+        (pkgs.python3.pkgs.callPackage ../default.nix { })
       ];
     };
 
     systemd.services.buildbot-master = {
+      after = [ "postgresql.service" ];
       serviceConfig = {
         # in master.py we read secrets from $CREDENTIALS_DIRECTORY
         LoadCredential = [
diff --git a/pyproject.toml b/pyproject.toml
index 8dc587c..8969d53 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,30 @@
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "buildbot-nix"
+authors = [
+    { name = "Jörg Thalheim", email = "joerg@thalheim.io" },
+]
+description = "A nixos module to make buildbot a proper Nix-CI."
+readme = "README.rst"
+requires-python = ">=3.9"
+license = {text = "MIT"}
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Topic :: Utilities",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python"
+]
+version = "0.0.1"
+
+[tool.setuptools]
+packages = ["buildbot_nix"]
+
 [tool.ruff]
 target-version = "py311"
 line-length = 88