diff --git a/.gitignore b/.gitignore
index 09d961b..41eca35 100644
--- a/.gitignore
+++ b/.gitignore
@@ -122,3 +122,11 @@ mako/*
 claude/*
 !claude/CLAUDE.md
 !claude/settings.json
+
+# direnv
+!direnv
+direnv/*
+!direnv/direnv.toml
+!direnv/lib
+direnv/lib/*
+!direnv/lib/use_dev.sh
diff --git a/direnv/direnv.toml b/direnv/direnv.toml
new file mode 100644
index 0000000..bf458e0
--- /dev/null
+++ b/direnv/direnv.toml
@@ -0,0 +1,2 @@
+[global]
+hide_env_diff = true
diff --git a/direnv/lib/use_dev.sh b/direnv/lib/use_dev.sh
new file mode 100644
index 0000000..7e28311
--- /dev/null
+++ b/direnv/lib/use_dev.sh
@@ -0,0 +1,7 @@
+# composable nix devshell from matej.nix
+# usage in .envrc: use dev uv_14 pg_18
+use_dev() {
+  for component in "$@"; do
+    use flake "dev#${component}"
+  done
+}
diff --git a/git/ignore b/git/ignore
index 5b27d54..6e8a08d 100644
--- a/git/ignore
+++ b/git/ignore
@@ -15,7 +15,6 @@ CLAUDE.local.md
 
 # nix
 .nix-venv
-.dev
 .envrc
 .direnv/