chore(third_party/gopkgs): Add Google Maps API client & deps

third_party/gopkgs/github.com/google/uuid/default.nix

@@ -0,0 +1,12 @@
+{ pkgs, ... }:
+
+pkgs.buildGo.external {
+  path = "github.com/google/uuid";
+
+  src = pkgs.third_party.fetchFromGitHub {
+    owner = "google";
+    repo = "uuid";
+    rev = "c2e93f3ae59f2904160ceaab466009f965df46d6";
+    sha256 = "0zw8fvl6jqg0fmv6kmvhss0g4gkrbvgyvl2zgy5wdbdlgp4fja0h";
+  };
+}

third_party/gopkgs/golang.org/x/sys/default.nix

@@ -6,7 +6,4 @@ pkgs.buildGo.external {
     url = "https://go.googlesource.com/sys";
     rev = "ac6580df4449443a05718fd7858c1f91ad5f8d20";
   };
-
-  deps = with pkgs.third_party; [
-  ];
 }

third_party/gopkgs/golang.org/x/time/default.nix

@@ -0,0 +1,10 @@
+{ pkgs, ... }:
+
+pkgs.buildGo.external {
+  path = "golang.org/x/time";
+
+  src = builtins.fetchGit {
+    url = "https://go.googlesource.com/time";
+    rev = "555d28b269f0569763d25dbe1a237ae74c6bcc82";
+  };
+}

third_party/gopkgs/googlemaps.github.io/maps.nix

@@ -0,0 +1,17 @@
+{ pkgs, ... }:
+
+pkgs.buildGo.external {
+  path = "googlemaps.github.io/maps";
+
+  src = pkgs.third_party.fetchFromGitHub {
+    owner = "googlemaps";
+    repo = "google-maps-services-go";
+    rev = "a46d9fca56ac82caa79408b2417ea93a75e3b986";
+    sha256 = "1zpl85yd3m417060isdlhxzakqkf4f59jgpz3kcjp2i0mkrskkjs";
+  };
+
+  deps = with pkgs.third_party; map (p: p.gopkg) [
+    gopkgs."github.com".google.uuid
+    gopkgs."golang.org".x.time.rate
+  ];
+}