Installation

Editor Extensions

Some extensions will manage Expert for you.

Read more.

Package Managers

Homebrew

You can use Homebrew to install the latest version of Expert.

brew install expert

Mason

:MasonInstall expert

Nix

Nixpkgs

Expert can be added to your devShells or used with nix run nixpkgs#expert

Flake

We provide a flake that can be used.

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    expert.url = "github:expert-lsp/expert";
  };

  outputs = {
    self,
    nixpkgs,
    expert,
  }: let
    systems = [
      "x86_64-linux"
      "aarch64-darwin"
    ];
    forAllSystems = f:
      nixpkgs.lib.genAttrs systems (system:
        f {
          inherit system;
          pkgs = nixpkgs.legacyPackages.${system};
        });
  in {
    devShells = forAllSystems ({
      system,
      pkgs,
    }: {
      default = pkgs.mkShell {
        packages = with pkgs; [
          elixir_1_18
          erlang
          expert.packages.${system}.default
        ];
      };
    });
  };
}

beam-flakes

Not currently supported in beam-flakes.

Archlinux

Install the AUR expert-git package.

yay -s expert-git

or

paru -s expert-git

Version Managers

Mise

Mise can install Expert, supporting all released versions, including on Windows.

Install

mise use expert

List versions

mise ls-remote expert

GitHub Releases

You can easily install Expert with the gh CLI and save it somewhere on your machine.

# Linux AMD64
gh release download nightly \
  --pattern *linux_amd64 \
  --output ~/.local/bin/expert \
  --clobber \
  --repo expert-lsp/expert

# Apple Silicon
gh release download nightly \
  --pattern *darwin_arm64 \
  --output ~/.local/bin/expert \
  --clobber \
  --repo expert-lsp/expert

chmod +x ~/.local/bin/expert

You can also manually download the executable from the releases page.

Source

Recipes for building from source are located in our justfile. The following builds a release for your OS, copies it to ~/.local/libexec/expert, and symlinks the executable to ~/.local/bin/expert.

just install

You can install it somewhere other than ~/.local with the --prefix flag.