For code to insert information like the git version, build time, compiler version etc, there is a special module called c2. This pseudo-module exports symbols that contain this information and can be easily used like:

module hello;

import stdio as io;
import c2;

public func int32 main(int32 argc, char*[] argv) {
    io.printf("buildtime is %s\n", c2.buildtime);
    io.printf("c2c version is %s\n", c2.version);
    return 0;
}

No need for dirty macros, code-generation scripts etc...

In addition, the C2 module also holds some commonly used symbols. This way, no symbols have to be placed at the global namespace and thus a naming conflict can always be resolved by the programmer.

See Basic types for a list of symbols.

The C2 also contains several C types used to map C functions to C2's interface files. See External Libraries for information on the types and interface files.