refactor adding paths

.profile

@@ -8,22 +8,39 @@
 # for ssh logins, install and configure the libpam-umask package.
 #umask 022
 
-# set PATH so it includes user's private bin if it exists
-if [ -d "$HOME/.local/bin" ] ; then
-    PATH="$HOME/.local/bin:$PATH"
-fi
+add_path () {
+    local EXTRA_PATH="${1}"
                 
-if [[ -x "$(command -v hx)" ]] ; then
-    export EDITOR="hx"
-elif [[ -x "$(command -v vim)" ]] ; then
-    export EDITOR="vim"
-fi
+    if [[ -d "$EXTRA_PATH" ]]; then
+        case ":$PATH:" in
+            *:"$EXTRA_PATH":*)
+                ;;
+            *)
+                export PATH="$EXTRA_PATH:$PATH"
+                ;;
+        esac
+    fi
+}
+
+# set PATH so it includes user's private bin
+add_path "$HOME/.local/bin"
 
 # set GOPATH and add bin directory to PATH variable
 export GOPATH="$HOME/.local/lib/go"
 
-if [ -d "$GOPATH/bin" ] ; then
-    PATH="$GOPATH/bin:$PATH"
+add_path "$GOPATH/bin"
+
+# add nvm bin to path
+add_path "$HOME/.nvm/current/bin"
+
+# add cargo/rust bin to path
+add_path "$HOME/.cargo/bin"
+
+# set default editor
+if [[ -x "$(command -v hx)" ]] ; then
+    export EDITOR="hx"
+elif [[ -x "$(command -v vim)" ]] ; then
+    export EDITOR="vim"
 fi
 
 # set default options for less