escher.h no such file or directory

[PoloNX]

Describe the bug

Hi, I'm trying to build epsilon with the app "calcboy" but I have one error.

Screenshots

➜  epsilon git:(master) ✗ make GB_ROM='/home/charlie/Documents/numworks/pok.gb' EPSILON_APPS='calcboy calculation graph code statistics solver sequence regression settings' PLATFORM=simulator epsilon_run
CXX     apps/apps_container.o
In file included from <command-line>:
./apps/calcboy/app.h:4:10: fatal error: escher.h: No such file or directory
    4 | #include <escher.h>
      |          ^~~~~~~~~~
compilation terminated.
make: *** [build/rules.mk:22: output/release/simulator/linux//apps/apps_container.o] Error 1

To Reproduce

Steps to reproduce the behavior:

1. do these commands :

   git clone https://github.com/numworks/epsilon
   git clone https://github.com/hallowed/calcboy
   cp -r calcboy/calcboy epsilon/apps
   cd epsilon
   make GB_ROM='...'  EPSILON_APPS='calcboy calculation graph code statistics solver sequence regression settings' PLATEFORM=emulator epsilon_run

2. see the error

Expected behavior

Normally epsilon build

Environment

• Epsilon version -> 19.5.2
• I'm building from arch linux

[RedGl0w]

This issue shouldn't be opened here, this repository has nothing to do with calcboy, which is the issue you have. However, I can already tell you that this isn't sure at all that the issue will be fixed in calcboy repository to support e19, because of they grey area of permitted usage of epsilon > 16 with the new license