move fish functions into nix

modules/desktop/i3.nix

@@ -227,6 +227,7 @@
         window = {
           border = 1;
           hideEdgeBorders = "both";
+          titlebar = false;
         };
         workspaceAutoBackAndForth = false;
         workspaceOutputAssign = [ ];

modules/desktop/xorg.nix

@@ -25,5 +25,10 @@
       xclip # Clipboard
     ];
 
+  home-manager.users.${user}.programs.fish.shellAliases = {
+    pbcopy = "xclip -selection clipboard -in";
+    pbpaste = "xclip -selection clipboard -out";
+  };
+
 }