diff --git a/.envrc b/.envrc
new file mode 100644
index 000000000..3550a30f2
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/flake-parts/devShells/default.nix b/flake-parts/devShells/default.nix
new file mode 100644
index 000000000..fca22b4a4
--- /dev/null
+++ b/flake-parts/devShells/default.nix
@@ -0,0 +1,14 @@
+{
+  perSystem = {
+    lib,
+    pkgs,
+    self',
+    ...
+  }: {
+    devShells.default = pkgs.mkShell {
+      packages = [
+        pkgs.tea
+        self'.packages.tea-create-pr
+      ];
+    };
+}
diff --git a/flake.nix b/flake.nix
index 8463cb6b2..d92345ecd 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,6 +18,7 @@
         "aarch64-linux"
       ];
       imports = [
+        ./flake-parts/devShells
         ./flake-parts/formatting.nix
         ./flake-parts/modules.nix
         ./flake-parts/packages.nix