Eget: easy pre-built binary installation

Go Report Card Release MIT License

Eget is the best way to easily get pre-built binaries for your favorite tools. It downloads and extracts pre-built binaries from releases on GitHub. To use it, provide a repository and Eget will search through the assets from the latest release in an attempt to find a suitable prebuilt binary for your system. If one is found, the asset will be downloaded and Eget will extract the binary to the current directory. Eget should only be used for installing simple, static prebuilt binaries, where the extracted binary is all that is needed for installation. For more complex installation, you may use the --download-only option, and perform extraction manually.

Eget Demo

For software maintainers, if you provide prebuilt binaries on GitHub, you can list eget as a one-line method for users to install your software.

Eget has a number of detection mechanisms and should work out-of-the-box with most software that is distributed via single binaries on GitHub releases. First try using Eget on your software, it may already just work. Otherwise, see the FAQ a clear set of rules to make your software compatible with Eget.

For more in-depth documentation, see DOCS.md.

Examples

eget zyedidia/micro --tag nightly
eget jgm/pandoc --to /usr/local/bin
eget junegunn/fzf
eget neovim/neovim
eget ogham/exa
eget --system darwin/amd64 sharkdp/fd
eget BurntSushi/ripgrep
eget -f eget.1 zyedidia/eget
eget zachjs/sv2v

How to get Eget

Before you can get anything, you have to get Eget. If you already have Eget and want to upgrade, use eget zyedidia/eget.

Quick-install script

curl -o eget.sh https://zyedidia.github.io/eget.sh
shasum -a 256 eget.sh # verify with hash below
bash eget.sh

Or alternatively (less secure):

curl https://zyedidia.github.io/eget.sh | sh

You can then place the downloaded binary in a location on your $PATH such as /usr/local/bin.

To verify the script, the sha256 checksum is 0e64b8a3c13f531da005096cc364ac77835bda54276fedef6c62f3dbdc1ee919 (use shasum -a 256 eget.sh after downloading the script).

One of the reasons to use eget is to avoid running curl into bash, but unfortunately you can’t eget eget until you have eget.

Pre-built binaries

Pre-built binaries are available on the releases page.

From source

Install the latest released version:

go install github.com/zyedidia/[email protected]

or install from HEAD:

git clone https://github.com/zyedidia/eget
cd eget
make build # or go build (produces incomplete version information)

A man page can be generated by cloning the repository and running make eget.1 (requires pandoc). You can also use eget to download the man page: eget -f eget.1 zyedidia/eget.

Usage

The PROJECT argument passed to Eget should either be a GitHub repository, formatted as user/repo, in which case Eget will search the release assets, or a direct URL, in which case Eget will directly download and extract from the given URL.

If Eget downloads an asset called xxx and there also exists an asset called xxx.sha256 or xxx.sha256sum, Eget will automatically verify that the SHA-256 checksum of the downloaded asset matches the one contained in that file, and abort installation if a mismatch occurs.

When installing an executable, Eget will place it in the current directory by default. If the environment variable EGET_BIN is non-empty, Eget will place the executable in that directory.

Usage:
  eget [OPTIONS] PROJECT

Application Options:
  -t, --tag=           tagged release to use instead of latest
      --pre-release    include pre-releases when fetching the latest version
      --to=            move to given location after extracting
  -s, --system=        target system to download for (use "all" for all choices)
  -f, --file=          file name to extract
  -q, --quiet          only print essential output
      --download-only  stop after downloading the asset (no extraction)
      --asset=         download a specific asset containing the given string
      --sha256         show the SHA-256 hash of the downloaded asset
      --verify-sha256= verify the downloaded asset checksum against the one provided
  -v, --version        show version information
  -h, --help           show this help message

FAQ

How is this different from a package manager?

Eget only downloads pre-built binaries uploaded to GitHub by the developers of the repository. It does not maintain a central list of packages, nor does it do any dependency management. Eget does not “install” executables by placing them in system-wide directories (such as /usr/local/bin) unless instructed, and it does not maintain a registry for uninstallation. Eget works best for installing software that comes as a single binary with no additional files needed (CLI tools made in Go, Rust, or Haskell tend to fit this description).

Is this secure?

Eget does not run any downloaded code — it just finds executables from GitHub releases and downloads/extracts them. If you trust the code you are downloading (i.e. if you trust downloading pre-built binaries from GitHub) then using Eget is perfectly safe. If Eget finds a matching asset ending in .sha256 or .sha256sum, the SHA-256 checksum of your download will be automatically verified. You can also use the --sha256 or --verify-sha256 options to manually verify the SHA-256 checksums of your downloads (checksums are provided in an alternative manner by your download source).

Does this work only for GitHub repositories?

At the moment Eget only supports searching GitHub releases and direct URLs. If you provide a direct URL instead of a GitHub repository, Eget will skip the detection phase and download directly from the given URL.

How can I make my software compatible with Eget?

Eget should work out-of-the-box with many methods for releasing software, and does not require that you build your release process for Eget in particular. However, here are some rules that will guarantee compatibility with Eget.

  • Provide your pre-built binaries as GitHub release assets.
  • Format the system name as OS_Arch and include it in every pre-built binary name. Supported OSes are darwin/macos, windows, linux, netbsd, openbsd, freebsd, android, illumos, solaris, plan9. Supported architectures are amd64, i386, arm, arm64, riscv64.
  • If desired, include *.sha256 files for each asset, containing the SHA-256 checksum of each asset. These checksums will be automatically verified by Eget.
  • Include only a single executable or appimage per system in each release archive.
  • Use .tar.gz, .tar.bz2, .tar.xz, .tar, or .zip for archives. You may also directly upload the executable without an archive, or a compressed executable ending in .gz, .bz2, or .xz.

Contributing

If you find a bug, have a suggestion, or something else, please open an issue for discussion. Pull requests will only be accepted if they close an issue marked as “pr-approved”. See DOCS.md for more in-depth documentation.

GitHub

https://github.com/zyedidia/eget