diff --git a/zshrc/merlin_devbox.zsh b/zshrc/merlin_devbox.zsh
index 5328c67..e1f397e 100644
--- a/zshrc/merlin_devbox.zsh
+++ b/zshrc/merlin_devbox.zsh
@@ -1,40 +1,21 @@
-# Merlin devbox specific aliases
-alias l=ls
-alias ll='ls -l --color=auto'
-alias infosys='cd ~/repos/infosys; pushonline -minfosys'
-export PATH=/opt/tiger/tce/tce_tools/bin:/home/tiger/.local/bin:/opt/common_tools:/usr/local/go/bin:$PATH
+# Patch prep_env.sh for zsh compatibility before sourcing
+source <(sed -e 's/^shopt -s histappend$/[[ -n "${BASH_VERSION}" ]] \&\& shopt -s histappend/' \
+             -e 's/\${!\([^}]*\)}/${(P)\1}/g' \
+             /workspace/mlx/../vscode/prep_env.sh)
 
-alias cp='cp -i'
-alias mv='mv -i'
-alias m='more'
-alias ll='ls -l'
-alias lsl='ls -lrt'
-alias lm='ls -al|more'
-alias l='ls -lrt'
-alias c='cat'
-alias v='vi'
-alias cl='clear'
-alias pg='ps -ef| grep '
-
-# Set terminal type to xterm for better compatibility with terminal features
-# export TERM=xterm
-
-# Customize command prompt to show: hostname(TCE_info):current_directory$
-# \h = hostname, \W = current working directory basename, \$ = $ for user/# for root
-# export PS1='\h($TCE_PSM@$TCE_CLUSTER:$TCE_ENV):\W\$ '
-
-source /workspace/mlx/../vscode/prep_env.sh
 # sh -c /opt/tiger/mlx_deploy/greeting.sh
-source /opt/tiger/mlx_deploy/mlxrc
-if [ -f /opt/tiger/mlx_deploy/pythonpath_rc ]; then
+
+if [ -f "/opt/tiger/mlx_deploy/pythonpath_rc" ]; then
     source /opt/tiger/mlx_deploy/pythonpath_rc
 fi
-if command -v import_hdfs_envs.sh > /dev/null 2>&1 && [ -z  ]; then source import_hdfs_envs.sh; fi
-if [ -f /opt/tiger/rh2_bashrc ]; then
+
+if [ -f "/opt/tiger/rh2_bashrc" ]; then
     source /opt/tiger/rh2_bashrc
 fi
+
 source /opt/tiger/mlx_deploy/userrc
 
+. "$HOME/.cargo/env"
 
 # huggingface proxy
 export HF_NETWORK_PROXY=http://huggingface-proxy-sg.byted.org
diff --git a/zshrc/prep_env.sh b/zshrc/prep_env.sh
index 14f8681..71533bf 100644
--- a/zshrc/prep_env.sh
+++ b/zshrc/prep_env.sh
@@ -13,7 +13,7 @@ export HISTSIZE=100000
 export HISTFILESIZE=200000
 
 # 2. 在关闭终端时追加历史记录，而不是覆盖
-shopt -s histappend
+[[ -n "${BASH_VERSION}" ]] && shopt -s histappend
 
 # 3. 忽略重复及以空格开头的命令
 export HISTCONTROL=ignoreboth
@@ -100,7 +100,11 @@ export SEC_KV_AUTH=1
 _base_no_proxy=".byted.org,byted.org,.bytedance.net,bytedance.net"
 
 for _v in NO_PROXY no_proxy; do
-    _cur="${!_v}"
+    if [[ -n "${BASH_VERSION}" ]]; then
+        _cur="${!_v}"
+    else
+        _cur="${(P)_v}"
+    fi
     if [[ -z "${_cur}" ]]; then
         export ${_v}="${_base_no_proxy}"
     else
@@ -150,10 +154,12 @@ if [[ "$WORKSPACE_ENVS_SET" != "1" ]]; then
     envfile="/etc/.container_env"
     if [[ -f $envfile ]]; then
         while IFS= read -r line; do
-            if [[ ! -v ${line%%=*} ]]; then # env is not set
-                export "${line%%=*}=${line#*=}"
+            _varname="${line%%=*}"
+            if eval "[[ -z \"\${${_varname}+x}\" ]]"; then # env is not set
+                export "${_varname}=${line#*=}"
             fi
         done <"$envfile"
+        unset _varname
     fi
 
     if [[ -n "${ZSH_VERSION}" ]]; then
@@ -220,16 +226,20 @@ worker_envfile="/etc/worker_envs_$ARNOLD_WORKER_ID"
 user_worker_envfile="$HOME/.worker_envs/worker_envs_$ARNOLD_WORKER_ID"
 if [[ -f $user_worker_envfile ]]; then
     while IFS= read -r line; do
-        if [[ ! -v ${line%%=*} ]]; then # env is not set
-            export "${line%%=*}=${line#*=}"
+        _varname="${line%%=*}"
+        if eval "[[ -z \"\${${_varname}+x}\" ]]"; then # env is not set
+            export "${_varname}=${line#*=}"
         fi
     done <"$user_worker_envfile"
+    unset _varname
 elif [[ -f $worker_envfile ]]; then
     while IFS= read -r line; do
-        if [[ ! -v ${line%%=*} ]]; then # env is not set
-            export "${line%%=*}=${line#*=}"
+        _varname="${line%%=*}"
+        if eval "[[ -z \"\${${_varname}+x}\" ]]"; then # env is not set
+            export "${_varname}=${line#*=}"
         fi
     done <"$worker_envfile"
+    unset _varname
 fi
 
 ############################################################
@@ -276,7 +286,11 @@ if [[ -f "$envfile" ]]; then
 
         if [[ " $env_white_list " == *" $var_name "* ]]; then
             # 变量已设置且在白名单中，追加新值并去重
-            existing_value="${!var_name}"
+            if [[ -n "${BASH_VERSION}" ]]; then
+                existing_value="${!var_name}"
+            else
+                existing_value="${(P)var_name}"
+            fi
             if [[ -n "$existing_value" ]]; then
                 new_value="$var_value:$existing_value"
                 dedup_value=$(deduplicate_env "$new_value")
@@ -292,6 +306,10 @@ fi
 # GPU 相关（原 prep_env.sh）
 ############################################################
 if [[ -n $NVIDIA_VISIBLE_DEVICES && $NVIDIA_VISIBLE_DEVICES != 'none' ]]; then
-    cur_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    if [[ -n "${ZSH_VERSION}" ]]; then
+        cur_dir="$(cd "$(dirname "$0")" && pwd)"
+    else
+        cur_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+    fi
     source "$cur_dir"/nvidia.sh
 fi