mason-org/mason.nvim v2.3.0

on GitHub

2.3.0 (2026-05-22)

mason.el Emacs plugin

The mason.el Emacs plugin, developed by @deirn, has been transferred to the Mason organization. The plugin gives Emacs developers access to the same core registry as Neovim users, with seamless access to developer tooling directly inside the editor.

Give @deirn a follow and mason.el a star if you'd like!

New firewall feature

Mason now supports the Socket.dev firewall. This feature is disabled by default and can be enabled like so:

require("mason").setup {
  firewall = {
    enable = true
  }
}

Refer to :h mason-firewall for more information.

Features

• add support for socket.dev firewall client (#2088) (24e77d5)
• add the infrastructure to support "system" packages (#2085) (8e921c2)
• npm: add install_args setting (#1581) (8fdc4b0)
• registry: add registry_cache setting for controlling cache behaviour (#2089) (cbf8d28)

Bug Fixes

• actually emit the receipt in uninstall event payloads (#2071) (b03fb0f)
• powershell: conform to single quotes (#1740) (12ddd18)
• pypi: add python 3.13 and 3.14 to list of fallbacks (#2081) (e54f5bf)
• spawn: handle cases where PATH env on Windows is not set (#2080) (cb8445f)