Figuring out Hosting Environment outside of MVC/ASP.NET 5 specific code

My ASP.NET 5 (RC1) project accesses, through couple of other layers, a Data Access Layer where I have to know connection string to my database. Technically I can read the connection string (this code is executed deep in Data Access Layer):

ConfigurationBuilder builder = new ConfigurationBuilder();
builder.AddJsonFile("appsettings.json");
IConfigurationRoot config = builder.Build();
var connectionString = config["Data:DefaultConnection:ConnectionString"];

But this code is unable to load a settings file corresponding to an environment. So, I have appsettings.json used in Production and appsettingsDevelopment.json which should be used in Developlment environment. What I need is an access to the property HostingEnvironment.EnvironmentName so it tells me what my current environment is (this code is executed deep in Data Access Layer):

HostingEnvironment env = new HostingEnvironment();
string envName = env.EnvironmentName;

The code above always returns environment Production, mostlikely this is just default value for the property. I understand that I am probably misusing the class and ideally its instance should be taken through Dependency Injection (in Startup/Controllers) so the Framework initializes it with right values but I need to know the environment very far from Startup/Controllers.

As an option I could pass a reference to IHostingEnvironment through all my layers down to Data Access Level but this solution does not look clean to me. What are my other options?