Use $HOME instead of hardcoded username/tilde

dot_zshrc

@@ -96,8 +96,8 @@ fi
 # plugins, and themes. Aliases can be placed here, though oh-my-zsh
 # users are encouraged to define aliases within the ZSH_CUSTOM folder.
 # For a full list of active aliases, run `alias`.
-if [ -f ~/.bash_aliases ]; then
-	. ~/.bash_aliases
+if [ -f $HOME/.bash_aliases ]; then
+	. $HOME/.bash_aliases
 fi
 
 # To customize prompt, run `p10k configure` or edit ~/.p10k.zsh.
@@ -111,7 +111,10 @@ export GPG_TTY=$(tty)
 export MICRO_TRUECOLOR=1
 
 # rbenv (ruby)
-eval "$(rbenv init -)"
+if command -v rbenv &> /dev/null
+then
+	eval "$(rbenv init -)"
+fi
 
 # brew (obsolete by brew plugin)
 # eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
@@ -121,7 +124,7 @@ export BUN_INSTALL="$HOME/.bun"
 export PATH="$BUN_INSTALL/bin:$PATH"
 
 # bun completions
-[ -s "/home/xevion/.bun/_bun" ] && source "/home/xevion/.bun/_bun"
+[ -s "$HOME/.bun/_bun" ] && source "$HOME/.bun/_bun"
 
 export PATH=$PATH:/usr/local/go/bin
 export TERM=xterm-256color  # fixes terminal colors when ssh'ing into laptop
@@ -130,5 +133,10 @@ export TERM=xterm-256color  # fixes terminal colors when ssh'ing into laptop
 export PATH="$HOME/.local/share/bob/nvim-bin:$PATH"
 
 # java version manager
-export PATH="$HOME/.jenv/bin:$PATH"
-eval "$(jenv init -)"
+if [ -d $HOME/.jenv/bin ]; then
+	export PATH="$HOME/.jenv/bin:$PATH"
+	if command -v jenv &> /dev/null
+	then
+		eval "$(jenv init -)"
+	fi
+fi