diff --git a/localbuild.sh b/localbuild.sh
deleted file mode 100755
index 9d56b4bb..00000000
--- a/localbuild.sh
+++ /dev/null
@@ -1 +0,0 @@
-NO_REMOTE=true ./build.sh $@
diff --git a/substituterbuild.sh b/substituterbuild.sh
new file mode 100755
index 00000000..40cad0b9
--- /dev/null
+++ b/substituterbuild.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -euo pipefail
+set -x
+
+export NO_REMOTE=true
+for machine in machines/*
+do
+    output=$(./build.sh $machine)
+    nix-env --set -p /nix/var/nix/profiles/per-user/charlotte/${machine#machines/} $output
+done