diff --git a/.env b/.env
new file mode 100644
index 0000000..e69de29
diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..9d142d2
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,6 @@
+dotenv
+#[ -d .venv ] || (python -m venv .venv; python -m pip install rbtools)
+#[ -f .venv/bin/activate ] && source .venv/bin/activate
+watch_file devShell.nix shell.nix flake.nix
+#use flake || use nix
+
diff --git a/.gitignore b/.gitignore
index a23f68e..085e004 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
+.direnv/
 .nvimlog
-*.priv.*
\ No newline at end of file
+*.priv.*
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..e74aab0
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,10 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  # nativeBuildInputs is usually what you want -- tools you need to run
+  nativeBuildInputs = with pkgs.buildPackages; [
+    ripgrep
+    envsubst
+  ];
+  DOCKER_BUILDKIT = 1;
+}