diff --git a/apply.sh b/apply.sh
new file mode 100755
index 0000000..fff529a
--- /dev/null
+++ b/apply.sh
@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+cd "$( dirname "${BASH_SOURCE[0]}" )"
+# todo: fetch
+system=$(nix eval --raw .#stdenv.system)
+set -x
+nixos-rebuild build --flake .#
+nix build .#yorick-home --no-link
+home-manager switch --flake .#$system
+nixos-rebuild switch --flake .# --target-host root@localhost
+rm -f result
+set +x
+echo "Updating nix-index cache"
+(
+  filename="index-x86_64-$(uname | tr A-Z a-z)"
+  mkdir -p ~/.cache/nix-index
+  cd ~/.cache/nix-index
+  # -N will only download a new version if there is an update.
+  wget -q -N https://github.com/Mic92/nix-index-database/releases/latest/download/$filename
+  ln -f $filename files
+)