Add zsh, swap alacritty for kitty

Adds zsh with nix-your-shell support

switch from alacritty to kitty

Add zsh

Fix ZSH, and switch to ZSH from alacritty

Add zsh prompt

Swap any-nix-shell for nix-your-shell

programs/zsh/default.nix

@@ -0,0 +1,31 @@
+{ config, pkgs, ... }:
+{
+  programs.zsh = {
+    enable = true;
+    enableCompletion = true;
+    autosuggestion.enable = true;
+    syntaxHighlighting.enable = true;
+    dotDir = ".config/zsh";
+
+    history.save = 10000;
+    history.size = 10000;
+    history.path = "${config.xdg.dataHome}/zsh/history";
+    initExtra = ''
+      # Nix-shell
+      ${pkgs.nix-your-shell}/bin/nix-your-shell zsh | source /dev/stdin
+
+      # Prompt
+      autoload -U colors && colors
+      autoload -Uz vcs_info
+      precmd_vcs_info() { vcs_info }
+      precmd_functions+=( precmd_vcs_info )
+      setopt prompt_subst
+      zstyle ':vcs_info:*' check-for-changes true
+      zstyle ':vcs_info:*' unstagedstr '·*'
+      zstyle ':vcs_info:*' stagedstr '·+'
+      zstyle ':vcs_info:git:*' formats '%b%u%c'
+      export PROMPT="%(0?.%F{white}.%? %F{red})τ%f "
+      export RPROMPT="%F{yellow}\$vcs_info_msg_0_%f %F{blue}%~%f"
+    '';
+  };
+}