History

Gregory Haynes 0c58eb11a0 Break install-types out of base We support building elements without depending on the base element. Breaking install-types out into its own element while making base depend on it so elements can depend in it without base. Change-Id: I104543d5482c76f60902e9fc32d91e196eeab51a	2015-04-14 13:39:18 -04:00
..
extra-data.d	Break install-types out of base	2015-04-14 13:39:18 -04:00
README.rst	Break install-types out of base	2015-04-14 13:39:18 -04:00

Gregory Haynes 0c58eb11a0 Break install-types out of base

We support building elements without depending on the base element.
Breaking install-types out into its own element while making base depend
on it so elements can depend in it without base.

Change-Id: I104543d5482c76f60902e9fc32d91e196eeab51a

2015-04-14 13:39:18 -04:00

extra-data.d

Break install-types out of base

2015-04-14 13:39:18 -04:00

README.rst

Break install-types out of base

2015-04-14 13:39:18 -04:00

README.rst

install-types

Enable install-types support for elements.

Install types permit elements to be installed from different sources, such as git repositories, distribution packages, or pip. The default install type is 'source' but it can be modified on the disk-image-create command line via the --install-type option. For example you can set:

--install-type=package

to enable package installs by default. Alternately, you can also set DIB_DEFAULT_INSTALLTYPE.

Many elements expose different install types. The different implementations live under <install-dir-prefix>-<install-type>-install directories under an element's install.d. The base element enables the chosen install type by symlinking the correct hook scripts under install.d directly. <install-dir-prefix> can be a string of alphanumeric and '-' characters, but typically corresponds to the element name.

For example, the nova element would provide:

nova/install.d/nova-package-install/74-nova nova/install.d/nova-source-install/74-nova

The following symlink would be created for the package install type:

install.d/74-nova -> nova-package-install/74-nova

Or, for the source install type:

install.d/74-nova -> nova-source-install/74-nova

All other scripts that exist under install.d for an element will be executed as normal. This allows common install code to live in a script under install.d.

Environment Variables

DIB_INSTALLTYPE<install_dir_prefix>

Required: No
Default: source
Description: Set the install type for the dir prefix. '-' characters can be replaced with a '_'.
Example: DIB_INSTALLTYPE_simple_init=repo Sets the simple-init element install type to be repo.