if you use arch by the way you can install it from AUR ( yay -S wefetch )
compilation from source code:
step 1: you need installed gcc and git package ( Gnu Complier Collection )
$ sudo apt install gcc git - debian-based
$ sudo pacman -S gcc git - arch-based
step 2: download the project repository
$ git clone https://github.com/Nick-cpp/wefetch
step 3: compilation & installation
$ cd wefetch/
$ g++ -std=c++17 wefetch.cpp -o wefetch
$ sudo install -Dm755 wefetch "$pkgdir/usr/bin/wefetch"
step 4: program launch
$ wefetch