diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..1d953f4
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
diff --git a/.gitignore b/.gitignore
index 03f357d..01c6686 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@ result
 *.zip
 *.qcow2
 work.nix
+.direnv/