Add Zsh config back

home/zsh/default.nix

@@ -0,0 +1,17 @@
+{...}: {
+  programs.zsh = {
+    enable = true;
+    enableAutosuggestions = true;
+    enableCompletion = true;
+    syntaxHighlighting.enable = true;
+    enableVteIntegration = true;
+    autocd = true;
+    historySubstringSearch.enable = true;
+    oh-my-zsh = {
+      enable = true;
+      plugins = ["colored-man-pages" "lol" "rand-quote"];
+      theme = "";
+    };
+    extraInit = "source ${./transient.zsh}\n";
+  };
+}

home/zsh/transient.zsh

@@ -0,0 +1,31 @@
+#!/usr/bin/env zsh
+
+zle-line-init() {
+    emulate -L zsh
+
+    [[ $CONTEXT == start ]] || return 0
+
+    while true; do
+        zle .recursive-edit
+        local -i ret=$?
+        [[ $ret == 0 && $KEYS == $'\4' ]] || break
+        [[ -o ignore_eof ]] || exit 0
+    done
+
+    local saved_prompt=$PROMPT
+    local saved_rprompt=$RPROMPT
+    PROMPT='%# '
+    RPROMPT=''
+    zle .reset-prompt
+    PROMPT=$saved_prompt
+    RPROMPT=$saved_rprompt
+
+    if ((ret)); then
+        zle .send-break
+    else
+        zle .accept-line
+    fi
+    return ret
+}
+
+zle -N zle-line-init