Major config overhaul: use custom modules, setup for multi-host config, and less boilerplate

modules/user/shell/default.nix

@@ -0,0 +1,63 @@
+{ config, lib, pkgs, ... }:
+
+let
+  cfg = config.userSettings.shell;
+in {
+  options = {
+    userSettings.shell = {
+      enable = lib.mkEnableOption "Enable fancy zsh with some necessary CLI utilities";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.zsh = {
+      enable = true;
+      enableAutosuggestions = true;
+      syntaxHighlighting.enable = true;
+      enableCompletion = true;
+      shellAliases = {
+        ls = "eza --icons -l -T -L=1";
+        cat = "bat";
+        htop = "btm";
+        fd = "fd -Lu";
+        w3m = "w3m -no-cookie -v";
+        neofetch = "disfetch";
+        fetch = "disfetch";
+        gitfetch = "onefetch";
+        "," = "comma";
+        ",," = "comma-shell";
+      };
+      initExtra = ''
+      PROMPT=" ◉ %U%F{magenta}%n%f%u@%U%F{blue}%m%f%u:%F{yellow}%~%f
+       %F{green}→%f "
+      RPROMPT="%F{red}▂%f%F{yellow}▄%f%F{green}▆%f%F{cyan}█%f%F{blue}▆%f%F{magenta}▄%f%F{white}▂%f"
+      [ $TERM = "dumb" ] && unsetopt zle && PS1='$ '
+      bindkey '^P' history-beginning-search-backward
+      bindkey '^N' history-beginning-search-forward
+      '';
+    };
+
+    programs.bash = {
+      enable = true;
+      enableCompletion = true;
+      shellAliases = config.programs.zsh.shellAliases;
+    };
+
+    home.packages = with pkgs; [
+      gnugrep gnused w3m
+      bat eza bottom fd bc
+      direnv nix-direnv
+    ];
+
+    programs.neovim = {
+      enable = true;
+      viAlias = true;
+      vimAlias = true;
+    };
+
+    programs.direnv.enable = true;
+    programs.direnv.enableZshIntegration = true;
+    programs.direnv.nix-direnv.enable = true;
+    programs.direnv.nix-direnv.package = pkgs.nix-direnv-flakes;
+  };
+}