diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/template/rust/.envrc b/template/rust/.envrc
new file mode 100644
index 0000000..89917d6
--- /dev/null
+++ b/template/rust/.envrc
@@ -0,0 +1,2 @@
+export CARGO_HOME=$(pwd)/cargo
+use flake