Install Rust on Windows 10 with msys2

• Install MSYS2
• Update MSYS2 packages by executing

  pacman -Sy
  pacman -Syu

  in MSYS2 Terminal
• Install git and mingw-w64-x86_64-toolchain in MSYS2 terminal:

  pacman -S git
  pacman -S mingw-w64-x86_64-toolchain

• Install mingw-w64-x86_64-rust in MSYS2 terminal:

  pacman -S mingw-w64-x86_64-rust

  Now the rust compiler is installed. You can stop here if you do not need rustup to manage the Rust compiler environment.
• To use rustup, clone the git repository:

  git clone https://github.com/rust-lang/rustup.git

• Compile and run rustup:

  cd rustup
  cargo run --release

  Rustup will detects the previous install rust compiler and asks to uninstall it before you can continue. You need to open a new MSYS2 terminal and run

  pacman -R mingw-w64-x86_64-rust

  and then go back to the rustup installation terminal, choose yes to continue the installation.
  On the next question choose: Custom installation and chose as host triple: x86_64-pc-windows-gnu
• After rustup installation, the cargo command will be install to $HOME/.cargo/bin. You will need to install it in your PATH environment variable.