gobetween: update vendored lxd

This allows us to drop the overrideModAttrs workaround, vendoring has been fixed in the newer lxd version.

pkgs/servers/gobetween/default.nix

@@ -13,25 +13,15 @@ buildGoModule rec {
 
   deleteVendor = true;
 
+  patches = [
+    ./gomod.patch
+  ];
+
   buildPhase = ''
     make -e build${lib.optionalString enableStatic "-static"}
   '';
 
-  lxd = fetchFromGitHub {
-    owner = "lxc";
-    repo = "lxd";
-    rev = "814c96fcec7478c9cac9582fead011b2dee0af5b";
-    sha256 = "03k2mwkfzgqmgzgxw46mymgkidbjlfv70pzw8hlyi18ag8jj4g5j";
-  };
-
-  overrideModAttrs = (_: {
-      postBuild = ''
-      rm -r vendor/github.com/lxc/lxd
-      cp -r --reflink=auto ${lxd} vendor/github.com/lxc/lxd
-      '';
-    });
-
-  vendorSha256 = "1nnz75mv27iwl5z7wa986gs8mhyn10452vini5x90yfx523bg589";
+  vendorSha256 = "1nkni9ikpc0wngh5v0qmlpn5s9v85lb2ih22f3h3lih7nc29yv87";
 
   installPhase = ''
     mkdir -p $out/bin

pkgs/servers/gobetween/gomod.patch

@@ -0,0 +1,13 @@
+diff --git a/src/go.mod b/src/go.mod
+index 3242342..795c306 100644
+--- a/src/go.mod
++++ b/src/go.mod
+@@ -28,7 +28,7 @@ require (
+ 	github.com/juju/go4 v0.0.0-20160222163258-40d72ab9641a // indirect
+ 	github.com/juju/persistent-cookiejar v0.0.0-20171026135701-d5e5a8405ef9 // indirect
+ 	github.com/juju/webbrowser v1.0.0 // indirect
+-	github.com/lxc/lxd v0.0.0-20200706202337-814c96fcec74
++	github.com/lxc/lxd v0.0.0-20200727014606-0d408e8e8ebb
+ 	github.com/mattn/go-colorable v0.1.7 // indirect
+ 	github.com/miekg/dns v1.1.30
+ 	github.com/mitchellh/go-testing-interface v1.14.0 // indirect