feat: big refactor

modules/core/shell.nix

@@ -0,0 +1,44 @@
+{ pkgs, ... }:
+let
+  common = import ./common.nix;
+in
+{
+  programs.zsh = {
+    enable = true;
+  };
+
+  users.users.gandalf = {
+    shell = pkgs.zsh;
+  };
+
+  environment = {
+    shellAliases = common.aliases;
+  };
+
+  programs = {
+    htop.enable = true;
+    iftop.enable = true;
+  };
+
+  documentation = {
+    enable = true;
+    doc.enable = true;
+    dev.enable = true;
+    man = {
+      enable = true;
+      generateCaches = true;
+      man-db.enable = true;
+    };
+
+  };
+
+  environment.systemPackages = with pkgs; [
+    man-pages
+    man-pages-posix
+    ncurses
+  ];
+
+  programs.nh = {
+    enable = true;
+  };
+}