fix go

pkgs/bluesky/default.nix

···
     "cmd/palomar"
   ];
 
+  buildFlags = [ "-mod=vendor" ];
+
+  preBuild = ''
+    export HOME=$TMPDIR
+  '';
+
   meta = with lib; {
     description = "Go source code for Bluesky's atproto services";
     homepage = "https://github.com/bluesky-social/indigo";
     license = licenses.mit;
     maintainers = with maintainers; [ ];
   };
-}
+}