new file mode 100755
--- /dev/null
+++ b/bin/cpm
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+. ~/.lib/sh/stubexec.sh
+
+stubexec $*
+
+curl -fsSL --compressed https://git.io/cpm |
+  perl - install -g App::cpm
+
+plenv rehash || :
+
+stubexec $*