riscv-collab/riscv-gnu-toolchain

brew install flyctl && fly launch --from https://github.com/riscv-collab/riscv-gnu-toolchain

curl -L https://fly.io/install.sh | sh && fly launch --from https://github.com/riscv-collab/riscv-gnu-toolchain

iwr https://fly.io/install.ps1 -useb | iex; fly launch --from https://github.com/riscv-collab/riscv-gnu-toolchain