diff --git a/sdata/subcmd-install/3.files-exp.sh b/sdata/subcmd-install/3.files-exp.sh
index c483cdd98..dd227fd4a 100644
--- a/sdata/subcmd-install/3.files-exp.sh
+++ b/sdata/subcmd-install/3.files-exp.sh
@@ -2,139 +2,149 @@
 # It's not for directly running.
 
 # See https://github.com/end-4/dots-hyprland/issues/2137
+#
+# Stage 1 todos:
+# TODO: add --exp-files-path <path>   Use <path> instead of the default yaml config
+# TODO: add --exp-files-regen         Force copy the default config to ${EXP_FILE_PATH} (auto do this when not existed)
 # TODO: Implement versioning, i.e. when user-defined yaml config file has version number mismatch with the default one, produce error. If only minor version number is not the same, the error can be ommitted via --exp-file-no-strict .
-# TODO: Implement user-define yaml with merging (override) ability for user who only wants little customization and is satisfied with most of the defaults.
+# TODO: add --exp-files-no-strict     Ignore error when minor version number is not the same
+#
+# Stage 2 todos:
 # TODO: Implement symlink (readable or non-readable) as sync mode
-# TODO: Implement --exp-file-reset-symlink to try to remove all symlink in .config and .local, which point to the local repo
+# TODO: add --exp-file-reset-symlink  Try to remove all symlink in .config and .local, which point to the local repo
 # TODO: Update help and doc about `--exp-files` and the yaml config, including the possible values of mode.
+#
+# Stage 3 todos:
+# TODO: Implement user-define yaml with merging (override) ability for user who only wants little customization and is satisfied with most of the defaults.
 # TODO: Support exclude pattern for each target to skip some files inside it.
 
+
 # Configuration file
-CONFIG_FILE="sdata/subcmd-install/3.files.yaml"
+CONFIG_FILE="sdata/subcmd-install/3.files-exp.yaml"
 
 # =============================================================================
 wizard_update_preferences() {
-    echo -e "${STY_CYAN}=== Dotfiles Customization ===${STY_RESET}"
-    
+  echo -e "${STY_CYAN}=== Dotfiles Customization ===${STY_RESET}"
+
     # Get current preferences
     current_shell=$(yq '.user_preferences.shell // "fish"' "$CONFIG_FILE")
     current_terminal=$(yq '.user_preferences.terminal // "kitty"' "$CONFIG_FILE")
     current_keybindings=$(yq '.user_preferences.keybindings // "default"' "$CONFIG_FILE")
-    
+
     echo "Current preferences:"
     echo "  Shell: $current_shell"
     echo "  Terminal: $current_terminal"
     echo "  Keybindings: $current_keybindings"
     echo
-    
+
     # Shell selection
     echo "Which shell do you prefer?"
     echo "1) fish (default)"
     echo "2) zsh"
     read -p "Enter choice [1-2]: " shell_choice
-    
+
     case "$shell_choice" in
-        1|"") shell="fish" ;;
-        2) shell="zsh" ;;
-        *) echo "Invalid choice, using fish"; shell="fish" ;;
+      1|"") shell="fish" ;;
+      2) shell="zsh" ;;
+      *) echo "Invalid choice, using fish"; shell="fish" ;;
     esac
-    
+
     # Terminal selection
     echo
     echo "Which terminal do you prefer?"
     echo "1) kitty (default)"
     echo "2) foot"
     read -p "Enter choice [1-2]: " terminal_choice
-    
+
     case "$terminal_choice" in
-        1|"") terminal="kitty" ;;
-        2) terminal="foot" ;;
-        *) echo "Invalid choice, using kitty"; terminal="kitty" ;;
+      1|"") terminal="kitty" ;;
+      2) terminal="foot" ;;
+      *) echo "Invalid choice, using kitty"; terminal="kitty" ;;
     esac
-    
+
     # Keybindings selection
     echo
     echo "Which keybinding style do you prefer?"
     echo "1) default (arrow keys)"
     echo "2) vim (H/J/K/L)"
     read -p "Enter choice [1-2]: " keybind_choice
-    
+
     case "$keybind_choice" in
-        1|"") keybindings="default" ;;
-        2) keybindings="vim" ;;
-        *) echo "Invalid choice, using default"; keybindings="default" ;;
+      1|"") keybindings="default" ;;
+      2) keybindings="vim" ;;
+      *) echo "Invalid choice, using default"; keybindings="default" ;;
     esac
-    
+
     # Update YAML in-place
     yq -i ".user_preferences.shell = \"$shell\"" "$CONFIG_FILE"
     yq -i ".user_preferences.terminal = \"$terminal\"" "$CONFIG_FILE"
     yq -i ".user_preferences.keybindings = \"$keybindings\"" "$CONFIG_FILE"
-    
+
     echo
     echo "Preferences updated!"
-}
+  }
 
 # Get user preference
 get_pref() {
-    yq -r ".user_preferences.$1" "$CONFIG_FILE"
+  yq -r ".user_preferences.$1" "$CONFIG_FILE"
 }
 
 # Check if pattern should be processed based on user preferences
 should_process_pattern() {
-    local pattern="$1"
-    local condition=$(echo "$pattern" | yq '.condition // "true"')
+  local pattern="$1"
+  local condition=$(echo "$pattern" | yq '.condition // "true"')
 
     # If no condition or condition is "true", always process
     if [[ "$condition" == "true" ]]; then
       return 0
     fi
-    
+
     # Extract the preference type and value from condition
     local type=$(echo "$condition" | yq '.type')
     local value=$(echo "$condition" | yq '.value')
-    
+
     [[ "$(get_pref "$type")" == "$value" ]]
-    
-}
+
+  }
 
 # Compare hashes of files/directories, return true if they are the same, false otherwise
 files_are_same() {
-    local path1="$1"
-    local path2="$2"
-    
+  local path1="$1"
+  local path2="$2"
+
     # Check if paths exist
     if [[ ! -e "$path1" || ! -e "$path2" ]]; then
-        return 1
+      return 1
     fi
-    
+
     # For directories, use find + md5sum to compare recursively
     # For files, use md5sum directly
     if [[ -d "$path1" && -d "$path2" ]]; then
-        # Compare directory contents using find and md5sum
-        local hash1=$(find "$path1" -type f -exec md5sum {} \; | sort -k 2 | md5sum | awk '{print $1}')
-        local hash2=$(find "$path2" -type f -exec md5sum {} \; | sort -k 2 | md5sum | awk '{print $1}')
-        [[ "$hash1" == "$hash2" ]]
+      # Compare directory contents using find and md5sum
+      local hash1=$(find "$path1" -type f -exec md5sum {} \; | sort -k 2 | md5sum | awk '{print $1}')
+      local hash2=$(find "$path2" -type f -exec md5sum {} \; | sort -k 2 | md5sum | awk '{print $1}')
+      [[ "$hash1" == "$hash2" ]]
     elif [[ -f "$path1" && -f "$path2" ]]; then
-        # Compare file hashes
-        local hash1=$(md5sum "$path1" | awk '{print $1}')
-        local hash2=$(md5sum "$path2" | awk '{print $1}')
-        [[ "$hash1" == "$hash2" ]]
+      # Compare file hashes
+      local hash1=$(md5sum "$path1" | awk '{print $1}')
+      local hash2=$(md5sum "$path2" | awk '{print $1}')
+      [[ "$hash1" == "$hash2" ]]
     else
-        # One is a file, one is a directory - different types
-        return 1
+      # One is a file, one is a directory - different types
+      return 1
     fi
-}
+  }
 
 # Find next backup number
 get_next_backup_number() {
-    local base_path="$1"
-    local counter=1
+  local base_path="$1"
+  local counter=1
 
-    while [[ -e "${base_path}.old.${counter}" ]]; do
-        ((counter++))
-    done
+  while [[ -e "${base_path}.old.${counter}" ]]; do
+    ((counter++))
+  done
 
-    echo $counter
+  echo $counter
 }
 
 # =============================================================================
@@ -152,118 +162,118 @@ readarray patterns < <(yq -o=j -I=0 '.patterns[]' "$CONFIG_FILE")
 
 # Process each pattern
 for pattern in "${patterns[@]}"; do
-    from=$(echo "$pattern" | yq '.from' - | envsubst)
-    to=$(echo "$pattern" | yq '.to' - | envsubst)
-    mode=$(echo "$pattern" | yq '.mode' - | envsubst)
-    condition=$(echo "$pattern" | yq '.condition // "true"')
-    
+  from=$(echo "$pattern" | yq '.from' - | envsubst)
+  to=$(echo "$pattern" | yq '.to' - | envsubst)
+  mode=$(echo "$pattern" | yq '.mode' - | envsubst)
+  condition=$(echo "$pattern" | yq '.condition // "true"')
+
     # Handle fontconfig fontset override
     # If FONTSET_DIR_NAME is set and this is the fontconfig pattern, use the fontset instead
     if [[ "$from" == "dots/.config/fontconfig" ]] && [[ -n "${FONTSET_DIR_NAME:-}" ]]; then
-        from="dots-extra/fontsets/${FONTSET_DIR_NAME}"
-        echo "Using fontset \"${FONTSET_DIR_NAME}\" for fontconfig"
+      from="dots-extra/fontsets/${FONTSET_DIR_NAME}"
+      echo "Using fontset \"${FONTSET_DIR_NAME}\" for fontconfig"
     fi
-    
+
     # Check if pattern should be processed
     if ! should_process_pattern "$pattern"; then
-        # Format condition message nicely
-        if [[ "$condition" != "true" ]]; then
-            cond_type=$(echo "$condition" | yq -r '.type // ""')
-            cond_value=$(echo "$condition" | yq -r '.value // ""')
-            if [[ -n "$cond_type" && -n "$cond_value" ]]; then
-                echo "Skipping $from -> $to (condition not met: $cond_type == '$cond_value')"
-            else
-                echo "Skipping $from -> $to (condition not met)"
-            fi
+      # Format condition message nicely
+      if [[ "$condition" != "true" ]]; then
+        cond_type=$(echo "$condition" | yq -r '.type // ""')
+        cond_value=$(echo "$condition" | yq -r '.value // ""')
+        if [[ -n "$cond_type" && -n "$cond_value" ]]; then
+          echo "Skipping $from -> $to (condition not met: $cond_type == '$cond_value')"
         else
-            echo "Skipping $from -> $to (condition not met)"
+          echo "Skipping $from -> $to (condition not met)"
         fi
-        continue
+      else
+        echo "Skipping $from -> $to (condition not met)"
+      fi
+      continue
     fi
-    
+
     echo "Processing: $from -> $to (mode: $mode)"
-    
+
     # Build exclude arguments for rsync
     excludes=()
     if echo "$pattern" | yq -e '.excludes' >/dev/null 2>&1; then
-        while IFS= read -r exclude; do
-            excludes+=(--exclude "$exclude")
-        done < <(echo "$pattern" | yq -r '.excludes[]')
+      while IFS= read -r exclude; do
+        excludes+=(--exclude "$exclude")
+      done < <(echo "$pattern" | yq -r '.excludes[]')
     fi
-    
+
     # Check if source exists
     if [[ ! -e "$from" ]]; then
-        echo "Warning: Source does not exist: $from (skipping)"
-        continue
+      echo "Warning: Source does not exist: $from (skipping)"
+      continue
     fi
-    
+
     # Ensure destination directory exists for files
     if [[ -f "$from" ]]; then
-        v mkdir -p "$(dirname "$to")"
+      v mkdir -p "$(dirname "$to")"
     fi
-    
+
     # Execute based on mode
     case $mode in
-        "sync")
-            if [[ -d "$from" ]]; then
-                warning_rsync_delete
-                v rsync -av --delete "${excludes[@]}" "$from/" "$to/"
-            else
-                warning_rsync_normal
-                # For files, don't use trailing slash and don't use --delete
-                v rsync -av "${excludes[@]}" "$from" "$to"
-            fi
-            ;;
-        "soft")
-            warning_rsync_normal
-            if [[ -d "$from" ]]; then
-                v rsync -av "${excludes[@]}" "$from/" "$to/"
-            else
-                # For files, don't use trailing slash
-                v rsync -av "${excludes[@]}" "$from" "$to"
-            fi
-            ;;
-        "hard")
+      "sync")
+        if [[ -d "$from" ]]; then
+          warning_rsync_delete
+          v rsync -av --delete "${excludes[@]}" "$from/" "$to/"
+        else
+          warning_rsync_normal
+          # For files, don't use trailing slash and don't use --delete
+          v rsync -av "${excludes[@]}" "$from" "$to"
+        fi
+        ;;
+      "soft")
+        warning_rsync_normal
+        if [[ -d "$from" ]]; then
+          v rsync -av "${excludes[@]}" "$from/" "$to/"
+        else
+          # For files, don't use trailing slash
+          v rsync -av "${excludes[@]}" "$from" "$to"
+        fi
+        ;;
+      "hard")
+        v cp -r "$from" "$to"
+        ;;
+      "hard-backup")
+        if [[ -e "$to" ]]; then
+          if files_are_same "$from" "$to"; then
+            echo "Files are identical, skipping backup"
+          else
+            backup_number=$(get_next_backup_number "$to")
+            v mv "$to" "$to.old.$backup_number"
             v cp -r "$from" "$to"
-            ;;
-        "hard-backup")
-            if [[ -e "$to" ]]; then
-                if files_are_same "$from" "$to"; then
-                    echo "Files are identical, skipping backup"
-                else
-                    backup_number=$(get_next_backup_number "$to")
-                    v mv "$to" "$to.old.$backup_number"
-                    v cp -r "$from" "$to"
-                fi
-            else
-                v cp -r "$from" "$to"
-            fi
-            ;;
-        "soft-backup")
-            if [[ -e "$to" ]]; then
-                if files_are_same "$from" "$to"; then
-                    echo "Files are identical, skipping backup"
-                else
-                    v cp -r "$from" "$to.new"
-                fi
-            else
-                v cp -r "$from" "$to"
-            fi
-            ;;
-        "skip")
-            echo "Skipping $from"
-            ;;
-        "skip-if-exists")
-            if [[ -e "$to" ]]; then
-                echo "Skipping $from (destination exists)"
-            else
-                v cp -r "$from" "$to"
-            fi
-            ;;
-        *)
-            echo "Unknown mode: $mode"
-            ;;
+          fi
+        else
+          v cp -r "$from" "$to"
+        fi
+        ;;
+      "soft-backup")
+        if [[ -e "$to" ]]; then
+          if files_are_same "$from" "$to"; then
+            echo "Files are identical, skipping backup"
+          else
+            v cp -r "$from" "$to.new"
+          fi
+        else
+          v cp -r "$from" "$to"
+        fi
+        ;;
+      "skip")
+        echo "Skipping $from"
+        ;;
+      "skip-if-exists")
+        if [[ -e "$to" ]]; then
+          echo "Skipping $from (destination exists)"
+        else
+          v cp -r "$from" "$to"
+        fi
+        ;;
+      *)
+        echo "Unknown mode: $mode"
+        ;;
     esac
-done
+  done
 
 #####################################################################################
diff --git a/sdata/subcmd-install/3.files.yaml b/sdata/subcmd-install/3.files-exp.yaml
similarity index 100%
rename from sdata/subcmd-install/3.files.yaml
rename to sdata/subcmd-install/3.files-exp.yaml
diff --git a/sdata/subcmd-install/options.sh b/sdata/subcmd-install/options.sh
index 5116ab9d5..c5e860215 100644
--- a/sdata/subcmd-install/options.sh
+++ b/sdata/subcmd-install/options.sh
@@ -36,11 +36,6 @@ New features (experimental):
                               see https://github.com/end-4/dots-hyprland/issues/1061 for details.
 ${STY_RST}"
 }
-# TODO: implement options below for --exp-files
-#      --exp-files-path <path> Use <path> instead of the default yaml config
-#      --exp-files-no-strict   Ignore error when minor version number is not the same
-#      --exp-files-regen       Force copy the default config to ${EXP_FILE_PATH}
-#                              (auto do this when not existed)
 
 cleancache(){
   rm -rf "${REPO_ROOT}/cache"