Simplify zsh config file structure

.config/zsh/9-deduplicate-path-variable

@@ -0,0 +1,19 @@
+# In case a plugin adds a redundant path entry, remove duplicate entries
+# from PATH
+#
+# This snippet is from Mislav Marohnić <mislav.marohnic@gmail.com>'s
+# dotfiles repo at https://github.com/mislav/dotfiles
+dedupe_path() {
+  typeset -a paths result
+  paths=($path)
+
+  while [[ ${#paths} -gt 0 ]]; do
+    p="${paths[1]}"
+    shift paths
+    [[ -z ${paths[(r)$p]} ]] && result+="$p"
+  done
+
+  export PATH=${(j+:+)result}
+}
+
+dedupe_path