Add pyenv check in initializations

initializations.zsh

@@ -1,13 +1,15 @@
 #!/bin/zsh
 
 if [[ "$OSTYPE" == "linux-gnu" ]]; then
-	export PATH=/usr/local/bin:$PATH
-	export PYENV_ROOT="$HOME/.pyenv"
-	export PATH="$PYENV_ROOT/bin:$PATH"
+	if which pyenv > /dev/null; then
+		export PATH=/usr/local/bin:$PATH
+		export PYENV_ROOT="$HOME/.pyenv"
+		export PATH="$PYENV_ROOT/bin:$PATH"
 
 	# For whatever reason the linux version of pyenv doesnt install `pyenv-virtualenv-init`.
-	eval "$(pyenv init -)"
-	eval "$(pyenv virtualenv-init -)"
+		eval "$(pyenv init -)"
+		eval "$(pyenv virtualenv-init -)"
+	fi
 fi
 
 if which pyenv-virtualenv-init > /dev/null; then