make: *** No rule to make target 'run'. Stop.

I installed grumpy using snap (sudo snap install grumpy). I would like to know which exactly is the root directory of the Grumpy source code distribution.

I'm asking this because I tried to do echo "print 'hello, world'" | make run into /snap/grumpy/ and get error:

$ echo "print 'hello, world'" | make run
make: *** No rule to make target 'run'.  Stop.

here my content from directory

$ ls /snap/grumpy/
15 current