The AppGameKit Studio requirements are shown below, so these probably apply to building the Repo as well:-
MINIMUM:
Requires a 64-bit processor and operating system
OS: Windows 10
Processor: Intel Celeron / Athlon Sempron
Memory: 1 GB RAM
Graphics: Open GL 2.0 compatible
Storage: 2 GB available space
Sound Card: N/A
RECOMMENDED:
Requires a 64-bit processor and operating system
OS: Windows 10 or better
Processor: Intel Core i3 / Athlon FX series or better
Memory: 2 GB RAM
Graphics: Nvidia Geforce 500 series / ATI Radeon HD 6000 series or better
Storage: 2 GB available space
Sound Card: N/A
I'll add something to the guide later