Issue was::
$ LANG=C make nvm.clean
INFO: NVM is not installed
make: *** [Makefile:99: nvm.clean] Error 42
Now::
$ LANG=C make nvm.clean
CLEAN [NVM] not installed
BTW: change info_msg to build_msg
Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>