diff --git a/.chezmoiscripts/run_before_20_install_dev_lang.sh.tmpl b/.chezmoiscripts/run_before_20_install_dev_lang.sh.tmpl
index 379a251..57bc3bd 100644
--- a/.chezmoiscripts/run_before_20_install_dev_lang.sh.tmpl
+++ b/.chezmoiscripts/run_before_20_install_dev_lang.sh.tmpl
@@ -16,6 +16,10 @@ if [ ! -d "$HOME/apps" ]; then
 fi
 
 function install_golang {
+  if command -v go ; then 
+    return 0
+  fi
+
   local tmpDir=$(mktemp -d)
   local url="https://go.dev/dl/go$GO_VERSION.$OSTYPE-$ARCH.tar.gz"
 
@@ -40,6 +44,9 @@ function install_golang {
 }
 
 function install_nodejs {
+  if command -v node ; then 
+    return 0
+  fi
   local tmpDir=$(mktemp -d)
 
   local arch=""
@@ -81,6 +88,9 @@ function install_nodejs {
 }
 
 function install_rust {
+  if command -v cargo ; then 
+    return 0
+  fi
   curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- --profile default -y
 }