Closed veritas9872 closed 7 months ago
Currently, variables such as PYTHONPATH are specified via PYTHONPATH=$EXTRA_PATH:$PYTHONPATH. However, this creates a dirty variable when PYTHONPATH is empty. Use the ${+$EXTRA_PATH} syntax for cleaner variables.
PYTHONPATH
PYTHONPATH=$EXTRA_PATH:$PYTHONPATH
${+$EXTRA_PATH}
Currently, variables such as
PYTHONPATHare specified viaPYTHONPATH=$EXTRA_PATH:$PYTHONPATH. However, this creates a dirty variable whenPYTHONPATHis empty. Use the${+$EXTRA_PATH}syntax for cleaner variables.