elan vs mise

elan manages installations of the Lean theorem prover on Linux, macOS and Windows. Its `lean` and `lake` binaries use a project’s `lean-toolchain` file to select the specified Lean version and download it when needed. The separate `elan` command provides manual control to install, select, run or uninstall Lean versions. The project supports version pinning, lockfiles, automatic switching, shell integration and CI/CD use. Installation options include shell instructions for Linux and macOS, a PowerShell method for Windows, and release downloads for supported platforms. The README recommends the Nixpkgs version on NixOS because toolchains downloaded by elan require patching there. Lake needs git to download dependencies. The project describes itself as a fork of rustup adapted for Lean infrastructure. elan is free at free, and the repository lists Apache-2.0 and MIT licenses. The releases page identifies v4.2.4 as the latest release.

mise is a free, MIT-licensed open-source tool for managing development runtimes, command-line tools, environment variables, and project tasks from a configuration file. It runs on Linux, macOS, and Windows and lists a registry of more than 1,000 tools. Projects can pin tool versions and share those choices with teams and continuous-integration systems. Configuration can load variables from dotenv files, secrets, and shell commands. Tasks can define build, test, lint, and other commands with dependencies and arguments, with task graphs, affected-build handling, and remote caching listed. The bootstrap command can declare packages, dotfiles, repositories, and services for machine setup. Shell hooks cover bash, zsh, fish, nushell, PowerShell, and other shells. Documentation describes GitHub Actions, GitLab CI, and Xcode Cloud use. Community plugins are listed for Emacs, IntelliJ, Neovim, and VSCode, with support depending on editor, extension, and language. Security controls include trust settings, safe and paranoid modes, checksums, signatures, provenance, and artifact attestations.