dub

Build project

$ dub build

$ dub run

$ dub init [name]

$ dub add [package]

$ dub upgrade

$ dub test

$ dub build --build=docs

$ dub fetch [package]

dub command [options]

dub is the official package manager and build tool for the D programming language. It handles dependency management, project compilation, testing, and distribution, providing a complete project lifecycle management solution for D developers.
The tool uses a JSON or SDL (Simple Declarative Language) configuration file (dub.json or dub.sdl) to describe project structure, dependencies, build configurations, and metadata. Dependencies are automatically fetched from the DUB registry (code.dlang.org) and cached locally.
dub supports multiple build configurations (debug, release, unittest), allowing developers to define different compiler flags and dependencies for various scenarios. It can generate project files for IDEs and integrates with D compilers (dmd, ldc, gdc) automatically.
The package ecosystem revolves around semantic versioning, with dub resolving dependency trees and selecting compatible versions. Projects can specify exact versions, version ranges, or branch references for dependencies. The upgrade command updates dependencies while respecting version constraints.

dub.json or dub.sdl

Project configuration file defining dependencies, build settings, and metadata.

User-level DUB settings including custom registry URLs and default paths.

build

Build project.

Build and run.

Run unit tests.

Initialize new project.

Add dependency.

Remove dependency.

Upgrade dependencies.

Fetch package.

Clean build artifacts.

Show project description.

dmd(1), ldc(1)