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Add command

As explained in Julia as a Second Language

The add command is a Julia package-manager command that adds a package to an environment and records a package version.

The add command adds packages to the active Julia environment, resolves their versions, and records them so the environment does not unexpectedly change when third-party packages evolve. section 16.3

Adding environment dependencies

In the hobby environment, `pkg> add OhMyREPL Revise` resolves package versions and updates both `Project.toml` and `Manifest.toml`. The environment can then load these packages from the Julia REPL.

Choose the command according to whether the package is used or actively developed:

  • Use `add` for ordinary third-party dependencies whose resolved versions should remain stable. section 16.3
  • Use `dev ./ToyGeometry` for a package under active development, so local code changes are available without explicit updates. section 16.3

How Julia as a Second Language covers it

How deep it goes
Shows package resolution and recorded versions, but defers detailed dependency-management internals.
Examples
Uses `add OhMyREPL Revise` to demonstrate dependency resolution and environment-file updates.
What it assumes
Assumes a Julia package-manager environment is active and distinguishes package use from active package development.
What you can do after
Operate/configure a Julia environment by adding dependencies with resolved, recorded package versions.
How it connects
Connects package environments with dependencies, package versions, and the dev command.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Julia as a Second Language. The section links point to the parts of the book it draws on.