hashicorp/vagrant
Vagrant is a tool for building and distributing development environments.
How vagrant is put together
HashiCorp Vagrant is a Ruby CLI tool for building and managing portable development environments across virtualization providers (VirtualBox, VMware, Hyper-V, Docker) and clouds. Its core is a plugin-oriented architecture: a central Environment/Machine model loads and merges Vagrantfile configuration through versioned (V1/V2) config loaders, then executes operations as middleware chains via an Action Runner/Warden. Functionality is extended through Ruby plugin definitions under plugins/ (commands, providers, hosts, guests, communicators, synced folders, pushes) plus newer Go-based SDK plugins under builtin/. Data flows from user Vagrantfiles and CLI arguments through config finalization into provider-specific machine actions, with box management, machine state indexes, subprocess execution, and HTTP downloading handled by utility modules.
Languages
Frameworks
Infrastructure
Major components
Core environment & machine model
lib/vagrant/environment.rb, machine.rb, box.rb, machine_index.rb load Vagrantfiles, resolve machines/boxes, and persist local machine state.
Action runner (middleware)
lib/vagrant/action/*.rb builds and runs stacked action chains (builder, runner, warden, hooks) that implement up/halt/provision lifecycles.
Config system (V1/V2)
lib/vagrant/config/loader.rb and versioned config classes parse, merge, validate, and finalize Vagrantfile configuration.
Plugin system
lib/vagrant/plugin/manager.rb, state_file.rb, v1.rb, v2.rb handle plugin installation state, registration, and the V1/V2 plugin APIs.
CLI command plugins
plugins/commands/* registers subcommands (box, cloud, cap, autocomplete, etc.) exposed through cli.rb.
Built-in Go SDK plugins
builtin/myplugin, otherplugin, httpdownloader, configvagrant are example/test components built on vagrant-plugin-sdk over gRPC.
Utility layer
lib/vagrant/util/* provides subprocess execution, downloading, SSH helpers, platform detection, credential scrubbing, and PowerShell invocation.
Templates & localization
templates/locales/en.yml and ERB templates provide i18n messages and generated files (NFS exports, package Vagrantfiles).
A quiet week with just one documentation tweak to the README.
1 weeksWeek of 2026-08-03
The past week on the Vagrant repository was very quiet, with only a single contribution merged. The activity was limited to a documentation update to the project's README, with no code changes, bug fixes, or new features shipped.
Docs
README update
The project's README file was updated (via pull request #13837), refreshing the introductory documentation that visitors and users see first.
Dependencies and code review
Dependency advisories
Security Watch
No known advisories across 0 scanned dependencies.
No known advisories in the scanned dependencies.
Code review
No concrete code-level issues confirmed.
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