Speed improvements on iSH

configs/shells/zsh/.zshrc

@@ -2,6 +2,11 @@
 # There are some important env vars that need to exist
 export EWCONFIG_ROOT="$HOME/.config/ewconfig"
 
+# Auto-detect if we are running inside of ISH (IOS Shell)
+if [ $(uname -r | grep -c "\-ish$") -gt 0 ]; then
+    export EWCONFIG_IN_ISH=1
+fi
+
 # Load my custom prompt and macros
 . $EWCONFIG_ROOT/configs/shells/zsh/prompt.sh
 . $EWCONFIG_ROOT/configs/shells/zsh/macros.sh

configs/shells/zsh/prompt.sh

@@ -29,20 +29,26 @@ fi
 # Add the common prompt parts
 export PROMPT="${PROMPT}%{$fg[cyan]%}%~ ${USER_ICON} %{$reset_color%}"
 setopt prompt_subst
-autoload -Uz vcs_info
-zstyle ':vcs_info:*' actionformats \
-    '%F{5}(%f%s%F{5})%F{3}-%F{5}[%F{2}%b%F{3}|%F{1}%a%F{5}]%f '
-zstyle ':vcs_info:*' formats \
-    '%F{5}(%f%s%F{5})%F{3}-%F{5}[%F{2}%b%F{5}]%f '
-zstyle ':vcs_info:(sv[nk]|bzr):*' branchformat '%b%F{1}:%F{3}%r'
 
-zstyle ':vcs_info:*' enable git cvs svn
+# Don't bother rendering VCS info on weak systems. Just fallback to the time and status
+if [ -n "$EWCONFIG_IN_ISH" ]; then
+    autoload -Uz vcs_info
+    zstyle ':vcs_info:*' actionformats \
+        '%F{5}(%f%s%F{5})%F{3}-%F{5}[%F{2}%b%F{3}|%F{1}%a%F{5}]%f '
+    zstyle ':vcs_info:*' formats \
+        '%F{5}(%f%s%F{5})%F{3}-%F{5}[%F{2}%b%F{5}]%f '
+    zstyle ':vcs_info:(sv[nk]|bzr):*' branchformat '%b%F{1}:%F{3}%r'
 
-# or use pre_cmd, see man zshcontrib
-vcs_info_wrapper() {
-    vcs_info
-    if [ -n "$vcs_info_msg_0_" ]; then
-        echo "%{$fg[grey]%}${vcs_info_msg_0_}%{$reset_color%}$del"
-    fi
-}
-export RPROMPT=$'%T $(vcs_info_wrapper)%?'
+    zstyle ':vcs_info:*' enable git cvs svn
+
+    # or use pre_cmd, see man zshcontrib
+    vcs_info_wrapper() {
+        vcs_info
+        if [ -n "$vcs_info_msg_0_" ]; then
+            echo "%{$fg[grey]%}${vcs_info_msg_0_}%{$reset_color%}$del"
+        fi
+    }
+    export RPROMPT=$'%T $(vcs_info_wrapper)%?'
+else
+    export RPROMPT=$'%T %?'
+fi