An environment variable set within uranium is active for not only the lifetime of the build, but for any entry points or scripts generated as well.
environment variables can be modified as a regular dictionary:
import os
def main(build):
build.envvars["EDITOR"] = "emacs"
build.envvars["LD_LIBRARY_PATH"] = os.path.join(build.root, "lib")uranium.environment_variables.EnvironmentVariables