Add posix man pages

layers/workstation.nix

@@ -6,6 +6,8 @@
     ./vscode.nix
   ];
 
+  documentation.dev.enable = true;
+
   environment.systemPackages = with pkgs; [
     virtmanager
     keepassxc
@@ -13,6 +15,8 @@
     tdesktop
     spotify
     gimp
+
+    posix_man_pages
   ];
 
   users.users.jens = {