diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..080fd39
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,24 @@
+let
+  sources = import ./npins;
+
+  importNixpkgsPath =
+    arch: p:
+    import p {
+      config.allowUnfree = true;
+      overlays = import ./pkgs/overlays.nix;
+      system = arch;
+    };
+
+  pkgs = import sources."nixos-unstable" {
+    config.allowUnfree = true;
+    overlays = import ./pkgs/overlays.nix;
+  };
+  agenix = sources.agenix;
+in
+pkgs.mkShell {
+  packages = [
+    pkgs.npins
+    pkgs.colmena
+    (pkgs.callPackage "${agenix}/pkgs/agenix.nix" { })
+  ];
+}