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 3d24d48..23684b7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
-.git/*
+.*/
 **/__pycache__/
 interpreter
-debug/expr.nix
+debug/reqs.txt
 /media/
 result