assume no dev tools by default

install.sh

@@ -112,6 +112,8 @@ elif [ "$(uname | grep -i 'Linux')" ]; then
     OS='ubuntu'
   elif [ "$(cat /etc/issue | grep -i 'elementary OS')" ]; then
     OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'Arch ')" ]; then
+    OS='ubuntu'
   elif [ "$(cat /etc/issue | grep -i 'Debian')" ]; then
     OS='ubuntu'
   elif [ "$(cat /etc/issue | grep -i 'Trisquel')" ]; then
@@ -121,13 +123,15 @@ elif [ "$(uname | grep -i 'Linux')" ]; then
   elif [ "$(cat /etc/issue | grep -i 'Raspbian')" ]; then
     OS='raspbian'
   elif [ "$(cat /etc/issue | grep -i 'Fedora')" ]; then
-    OS='fedora'
+    OS='ubuntu'
   elif [ "$(cat /etc/issue | grep -i 'Marvell')" ]; then
     OS='marvell'
+  else
+    OS='ubuntu'
   fi
 else
   echo "unsupported unknown os (non-mac, non-linux)"
-  exit 1
+  exit 500
 fi
 
 case "${OS}" in