Can I use Weld in the manner to how I can use Google Guice?

Google Guice does not need any container or application stack,
it only needs its libs to work. So I can use Dependency Injection in any Java-Project.

I know, I can do more with CDI (Weld) than with DI (Guice).

According to Weld-Documentation:

Weld provides a complete SPI allowing Java EE containers such as JBoss AS and GlassFish to use Weld as their
built-in CDI implementation. Weld also runs in servlet engines like Tomcat and Jetty, or even in a plain Java SE
environment.

So I assume, that I only need the libs of CDI and can make use of it in any environment. Am I right?

The package javax.inject. is a CDI-Package.

But what about the javax.enterprise.context. (ApplicationScope,...).
These are related to HTTP-Scopes, so what about the CONTEXT Dependency Injection.
Do I need to implement a CONTEXT of my environment (for example, not a HTTP-JSF-Environment) to make use of the CONTEX Dependency Injection or can I ignore the CONTEXT in such environment, when I only want to make use of DI in the manner of Google Guice?

Is Weld really 100% portable (without any SPI) as Google Guice is?