Strip path from binary in first arg

This allows passing a binary with filepath, so long as there is no other cache with the same name

evalcache.plugin.zsh

@@ -7,7 +7,8 @@
 export ZSH_EVALCACHE_DIR=${ZSH_EVALCACHE_DIR:-"$HOME/.zsh-evalcache"}
 
 function _evalcache () {
-  local cacheFile="$ZSH_EVALCACHE_DIR/init-$1.sh"
+  BINARY=$1
+  local cacheFile="$ZSH_EVALCACHE_DIR/init-${BINARY##*/}.sh"
 
   if [ "$ZSH_EVALCACHE_DISABLE" = "true" ]; then
     eval "$("$@")"