dep: enable all platforms

pkgs/development/tools/dep/default.nix

@@ -21,7 +21,7 @@ buildGoPackage rec {
     homepage = https://github.com/golang/dep;
     description = "Go dependency management tool";
     license = licenses.bsd3;
-    platforms = platforms.linux;
+    platforms = platforms.all;
     maintainers = [ maintainers.carlsverre ];
   };
 }