Arch tfchain build script

PKGBUILD

pkgname="tfchain"
pkgver="2.6.0"
pkgrel="1"
pkgdesc="Threefold TFChain"
arch=("x86_64")
source=("https://example.com/${pkgname}-${pkgver}.tar.gz")
source=("https://github.com/threefoldtech/tfchain/archive/refs/tags/v${pkgver}.tar.gz")
license=("custom")
sha256sums=("a9059ae45895fff39d3eeeeaad2eda1298103d9f66232fca826d86f940cea010")
makedepends=("base-devel" "protobuf" "clang" "llvm" "gcc12" "rustup")

build() {
    # use rustup, specific version are needed and defined
    # in rust cargo file
    cd "${pkgname}-${pkgver}/substrate-node"
    CC=gcc-12 CXX=g++-12 cargo build --release
}

package() {
    mkdir -p "${pkgdir}/usr/bin"
    cp "${pkgname}-${pkgver}/substrate-node/target/release/tfchain" "${pkgdir}/usr/bin"
    chmod +x "${pkgdir}/usr/bin/tfchain"
}

prerequired.sh

#!/bin/bash

pacman -Sy
pacman -S --noconfirm fakeroot sudo base-devel

useradd -m maxux
echo "maxux ALL=(ALL:ALL) NOPASSWD: ALL" > /etc/sudoers.d/maxux

# Now run `makepkg -fs` as maxux user (cannot be done as root)