v2.5.0

Enhancements

• Add organization-defined dependency policies that filter the package versions available during dependency resolution. An organization publishes a named policy through its repository, and a project opts into one with the policy config (HEX_POLICY, [org: "ORG", name: "NAME"] in the mix.exs :hex block, or mix hex.config). A policy constrains one or more repositories — typically the organization's own repo and hexpm — and for each can block releases that:

  • carry a security advisory at or above a minimum severity
  • are retired for one of a given set of reasons
  • are newer than a release-age cooldown window

  Per-package allow/deny overrides take precedence over the restriction (an allow also exempts the release, and the most specific match wins), and versions already in mix.lock are never filtered. Use mix hex.policy show to summarize the active policy and mix hex.policy why PACKAGE to see why specific versions are blocked.

• Add a configurable release-age cooldown to dependency resolution that withholds freshly published versions until they reach a minimum age, mitigating supply-chain attacks where a compromised release is pulled into projects before it can be detected and retired. Configure it with the cooldown config (HEX_COOLDOWN), accepting durations like 7d, 2w, or 1mo, and exempt specific repositories with cooldown_exclude_repos. Versions already in mix.lock, and locked versions that are retired or carry an advisory, bypass the cooldown so existing projects and security fixes are never held back.

• Warn about packages with known security advisories during mix deps.get and mix deps.update

• Add mix hex.search QUERY to search documentation from the terminal, and move package name search to mix hex.package search

• Add --page and --format md options to mix hex.docs

• Support JSON output in mix hex.outdated

• Annotate cooldown-held versions in mix hex.outdated

• Validate package files in mix hex.build

• Accept LicenseRef- license identifiers in mix hex.build

• Use subdomain URLs (PACKAGE.hexdocs.pm) for package docs

• Escape terminal control sequences in server-provided x-hex-message headers

Bug fixes

• Fix a crash when a server responds with an x-hex-message header
• Deduplicate aliased security advisories
• Warn when the OAuth session cannot be refreshed instead of silently sending unauthenticated requests

Deprecations

• Deprecate mix hex.organization auth ORGANIZATION without --key; authenticate as a user with mix hex.user auth instead, or pass a pre-generated organization key with --key for CI
• Deprecate authenticating to organization repositories with a stored key; a future release will require mix hex.user auth or a short-lived organization token
• Deprecate authenticating to organization repositories with HEX_REPOS_KEY; authenticate per organization with mix hex.organization auth ORGANIZATION --key KEY (HEX_REPOS_KEY continues to authenticate the base hexpm repository and trusted mirrors)