Swift

mise can be used to manage multiple versions of swift on the same system. Swift is supported on macOS and Linux.

Usage

Install Swift for the current project and check the selected toolchain:

mise use swift@latest
mise exec -- swift --version

Use mise use -g swift@latest for a personal default. In an existing Swift package with Package.swift, run mise exec -- swift build to build it.

On Linux, Swift archives target specific distributions and require compatible system libraries. mise records the selected distribution in lockfile options; use a lock entry built for your target distribution. The Swift core plugin does not currently support Windows.

See a mise guide for Swift developers for how to use mise with swift.

Tool Options

The following tool-options are available for the swift backend. These options go in the [tools] section of mise.toml.

install_env

Set environment variables for install-time commands run by the core swift backend:

[tools]
swift = { version = "latest", install_env = { HTTPS_PROXY = "http://proxy.example" } }

Settings

swift.gpg_verify

• Type: boolean(optional)
• Env: MISE_SWIFT_GPG_VERIFY
• Default: None

Verify OpenPGP signatures for swift (built-in, no external gpg required). Set to false to disable.

swift.platform

• Type: string
• Env: MISE_SWIFT_PLATFORM
• Default: "osx" | "windows10" | "ubuntu20.04" | "ubuntu22.04" | "ubuntu24.04" | "amazonlinux2" | "ubi9" | "fedora39"

Override the platform to use for precompiled binaries.