Add dynamic PATH helpers to bash profile

bash/.bash_profile

@@ -2,4 +2,5 @@
 # ~/.bash_profile
 #
 
+[[ -f ~/.profile ]] && . ~/.profile
 [[ -f ~/.bashrc ]] && . ~/.bashrc

bash/.bashrc

@@ -183,4 +183,13 @@ type -P cdl.sh &>/dev/null && source cdl.sh # this is also like an alias
 #-----------------------------------------------------------------------
 
 # opencode
-export PATH=/home/deyloop/.opencode/bin:$PATH
+if type path_prefix >/dev/null 2>&1; then
+  path_prefix "$HOME/.opencode/bin"
+else
+  case ":${PATH}:" in
+    *:"$HOME/.opencode/bin":*) ;;
+    *)
+      [ -d "$HOME/.opencode/bin" ] && export PATH="$HOME/.opencode/bin:$PATH"
+      ;;
+  esac
+fi

bash/.profile

@@ -55,14 +55,38 @@ export REPOS_DIR="$HOME/repos"
 
 #----------------------------------PATH---------------------------------
 
-PATH="$CARGO_HOME:$PATH"
-PATH="$SCRIPTS_DIR:$PATH"
-PATH="$HOME/.local/bin:$PATH"
-PATH="$PATH:$HOME/.local/go/bin"
+# Prepend directories to PATH, skipping any that are already present or missing.
+path_prefix() {
+  _path_prefix_dir=
+  for _path_prefix_dir in "$@"; do
+    [ -d "$_path_prefix_dir" ] || continue
+    case ":${PATH}:" in
+      *:"${_path_prefix_dir}":*) ;;
+      *) PATH="${_path_prefix_dir}:${PATH}" ;;
+    esac
+  done
+  export PATH
+  unset _path_prefix_dir
+}
+
+# Append directories to PATH, skipping any that are already present or missing.
+path_postfix() {
+  _path_postfix_dir=
+  for _path_postfix_dir in "$@"; do
+    [ -d "$_path_postfix_dir" ] || continue
+    case ":${PATH}:" in
+      *:"${_path_postfix_dir}":*) ;;
+      *) PATH="${PATH}:${_path_postfix_dir}" ;;
+    esac
+  done
+  export PATH
+  unset _path_postfix_dir
+}
+
+path_prefix "$CARGO_HOME" "$SCRIPTS_DIR" "$HOME/.local/bin"
 
 export GOPATH="$HOME/.local/go/packages"
-PATH="$PATH:$GOPATH/bin"
-export PATH
+path_postfix "$HOME/.local/go/bin" "$GOPATH/bin"
 
 
 #-----------------------------------------------------------------------