What mechanisms are there to run with a reduced environment when debugging?

[starball5]

VS Code's integrated terminal has the terminal.integrated.inheritEnv setting, and the various terminal profile settings allow you to "unset" things from the base environment by "setting" them to null in the terminal profile, but terminal.integrated.inheritEnv doesn't seem to affect programs being debugged by this extension when using the internal console, and the cppdbg launch config type doesn't have the same set-to-null-to-erase mechanism.

Reading the description of the environment property of the cppdbg launch config type, it says it own supports adding to the environment.

Is there any way to "remove" things from the environment? And is there a way to not inherit any environment?