diff --git a/.envrc b/.envrc
new file mode 100644
index 00000000..3900d246
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix --arg pkgs 'import <nixpkgs> { }'
diff --git a/.gitignore b/.gitignore
index 385b151a..5ea73acc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,3 +24,5 @@ src/artifacts/
 src/ftd2xx.dll
 
 scripts/swolisten
+
+.direnv/