hugo/content/en/hugo-modules/use-modules.md
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title linktitle description date categories keywords menu weight sections_weight draft aliases toc
Use Hugo Modules Use Hugo Modules How to use Hugo Modules to build and manage your site. 2019-07-24
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Prerequisite

{{< gomodules-info >}}

Initialize a New Module

Use hugo mod init to initialize a new Hugo Module. If it fails to guess the module path, you must provide it as an argument, e.g.:

hugo mod init github.com/gohugoio/myShortcodes

Also see the CLI Doc.

Use a Module for a Theme

The easiest way to use a Module for a theme is to import it in the config.

  1. Initialize the hugo module system: hugo mod init github.com/<your_user>/<your_project>
  2. Import the theme:

{{< code-toggle file="config" >}} [module] module.imports path = "github.com/spf13/hyde" {{< /code-toggle >}}

Update Modules

Modules will be downloaded and added when you add them as imports to your configuration, see Module Imports.

To update or manage versions, you can use hugo mod get.

Some examples:

Update All Modules

hugo mod get -u

Update All Modules Recursively

hugo mod get -u ./...

Update One Module

hugo mod get -u github.com/gohugoio/myShortcodes

Get a Specific Version

hugo mod get github.com/gohugoio/myShortcodes@v1.0.7

Also see the CLI Doc.

Make and test changes in a module

One way to do local development of a module imported in a project is to add a replace directive to a local directory with the source in go.mod:

replace github.com/bep/hugotestmods/mypartials => /Users/bep/hugotestmods/mypartials

If you have the hugo server running, the configuration will be reloaded and /Users/bep/hugotestmods/mypartials put on the watch list.

Instead of modifying the go.mod files, you can also use the modules config replacements option.

Print Dependency Graph

Use hugo mod graph from the relevant module directory and it will print the dependency graph, including vendoring, module replacement or disabled status.

E.g.:

hugo mod graph

github.com/bep/my-modular-site github.com/bep/hugotestmods/mymounts@v1.2.0
github.com/bep/my-modular-site github.com/bep/hugotestmods/mypartials@v1.0.7
github.com/bep/hugotestmods/mypartials@v1.0.7 github.com/bep/hugotestmods/myassets@v1.0.4
github.com/bep/hugotestmods/mypartials@v1.0.7 github.com/bep/hugotestmods/myv2@v1.0.0
DISABLED github.com/bep/my-modular-site github.com/spf13/hyde@v0.0.0-20190427180251-e36f5799b396
github.com/bep/my-modular-site github.com/bep/hugo-fresh@v1.0.1
github.com/bep/my-modular-site in-themesdir

Also see the CLI Doc.

Vendor Your Modules

hugo mod vendor will write all the module dependencies to a _vendor folder, which will then be used for all subsequent builds.

Note that:

  • You can run hugo mod vendor on any level in the module tree.
  • Vendoring will not store modules stored in your themes folder.
  • Most commands accept a --ignoreVendorPaths flag, which will then not use the vendored modules in _vendor for the module paths matching the Glob pattern given.

Also see the CLI Doc.

Tidy go.mod, go.sum

Run hugo mod tidy to remove unused entries in go.mod and go.sum.

Also see the CLI Doc.

Clean Module Cache

Run hugo mod clean to delete the entire modules cache.

Note that you can also configure the modules cache with a maxAge, see File Caches.

Also see the CLI Doc.

Module Workspaces

{{< new-in "0.109.0" >}}

Workspace support was added in Go 1.18 and Hugo got solid support for it in the v0.109.0 version.

A common use case for a workspace is to simplify local development of a site with its theme modules.

A workspace can be configured in a *.work file and activated with the module.workspace setting, which for this use is commonly controlled via the HUGO_MODULE_WORKSPACE OS environment variable.

See the hugo.work file in the Hugo Docs repo for an example:

go 1.19

use .
use ../gohugoioTheme

Using the use directive, list all the modules you want to work on, pointing to its relative location. As in the example above, it's recommended to always include the main project (the ".") in the list.

With that you can start the Hugo server with that workspace enabled:

HUGO_MODULE_WORKSPACE=hugo.work hugo server --ignoreVendorPaths "**"

The --ignoreVendorPaths flag is added above to ignore any of the vendored dependencies inside _vendor. If you don't use vendoring, you don't need that flag. But now the server is set up watching the files and directories in the workspace and you can see your local edits reloaded.