Setting RUSTUP_HOME and CARGO_HOME before running rustup installation does not work in Windows

Question

Defining RUSTUP_HOME and/or CARGO_HOME environment variables to override default installation directory for .cargo and .rustup does not work (in Windows at least).

Steps to reproduce:

• Define RUSTUP_HOME as an environment variable
• Define CARGO_HOME as an environment variable
• Double click on rustup-init.exe to begin the installation
  
  

Result:

.rustup and .cargo will be installed at the default directory which is %USERPROFILE%.

Answer 1

After defining RUSTUP_HOME and CARGO_HOME environment variables, run rustup-init.exe from the terminal like .\Downloads\rustup-init.exe instead of double clicking the .exe file.