Consider the following script:
% powerline-daemon -s powerline-test
% powerline --socket powerline-test -p/dev/null shell left
Config file not found in search paths (/dev/null): config.json
% powerline --socket powerline-test shell left
Config file not found in search paths (/dev/null): config.json
Note the problem: second call to powerline does not use offending path, but it
still emits the error “Config file not found in search paths”.
ZyX