Elixir

Applicability and integration

Elixir is supported only for Snyk Open Source.

Available integrations: CLI and IDE: test or monitor your app

Available functions:

• Test your app's SBOM using pkg:hex

• Test your app's packages using pkg:hex

Technical specifications

• Supported package manager: Mix or Hex

• Supported package registry: hex.pm

For Elixir, Snyk supports the Reports feature.

The Snyk Fix PR feature is not available for Elixir. This means that you will not be notified if the PR checks fail when the following conditions are met:

• The PR checks feature is enabled and configured to Only fail when the issues found have a fix available.

• "Fixed in" available is set to Yes.

CLI support for Elixir

To scan your dependencies, you must first install Elixir and Mix. For details, see the Elixir installation instructions.

Snyk offers security scanning to test your Elixir Projects for vulnerabilities using the CLI.

Mix is a build tool that compiles, tests, and creates Elixir projects. Mix manages dependencies by integrating with the Hex package manager.

Snyk builds a dependency tree for your Project by analyzing your mix.exs and mix.lock files. The mix.lock file must be present and in sync with the mix.exs file. After Snyk builds the tree, Snyk uses the vulnerability database to find vulnerabilities in the packages anywhere in the dependency tree.

Project naming

Projects in the Snyk UI are named according to the app keyword from the project/0 function exported by Mix.Project in the main mix.exs file.

To override the name, use the --project-name CLI option.

Mix umbrella projects

If you test a Mix umbrella project, Snyk detects that it is an umbrella project and includes all the child apps automatically.

Along with the main mix.exs, each app mix.exs appears as a separate Project in the Snyk UI, named according to the path to the app.

Snyk fully supports all :hex packages listed in the Mix project, including all their transitive dependencies and any vulnerabilities.

Hex support includes both Elixir and Erlang packages.

Snyk also has limited support for :path, :git and :github dependencies, but not their transitive dependencies or vulnerabilities.

• :path dependencies appear in the dependency tree by name

• :git and :github dependencies appear in the dependency tree by repository URL and version (either :branch, :tag or :ref, as defined in the mix.exs file)

When using asdf, ensure you set a version by running the asdf global elixir <version of your choice>.