goenv vs rustup

goenv manages Go versions on Linux and macOS using a model similar to pyenv and rbenv. It supports global selections, per-project versions, and environment-variable overrides. Shim executables placed in PATH route Go commands to the selected installation, enabling automatic switching and project version pinning. The installation guide says goenv downloads prebuilt Go binaries provided by Google, while new Go versions are added automatically on a daily cron schedule. The project identifies v3 as its current stable version and recommends it for new installations; it says v3 is fully backward compatible with v2. Version 2 receives security patches and critical bug fixes, with support ending on or before December 31, 2028. Setup documentation covers Bash and Zsh, including a .bashrc note for Ubuntu. Installation options include Homebrew and ZPlug for Zsh, and the README includes AWS CodeBuild guidance. goenv is free under the MIT license.

rustup installs Rust from its official release channels and manages the toolchains and supporting components developers use. It can switch among stable, beta, and nightly compilers, keep toolchains updated, and install specific versions or dated releases. For cross-compilation, add a target’s standard library with `rustup target add`; Android builds also require the Android NDK and usually a linker. rustup manages official channels, archived releases, alternate hosts, and local builds. It installs command proxies for tools including rustc, rustdoc, Cargo, rust-analyzer, Clippy, and Miri. Component availability varies by release and toolchain, especially for nightly. Installation uses a shell script on Unix and rustup-init.exe on Windows. Downloads use HTTPS, but download signatures are not yet validated. rustup is free and open source, with a free plan. Its listed supported platforms are Linux, macOS, and Windows; the installer also runs on FreeBSD, NetBSD, Solaris, and illumos.