# install

Installs a module and all its dependencies in a resolver. since 1.3 The module to install should be available in a resolver, and will be installed in another resolver which should support publish.
This is particularly useful for users who only have a private repository, and want to benefit from public repositories from time to time. In this case, when a module is missing in the private repository, a call to install let download the module from a public repository not usually used for dependency resolution, and install it and its dependencies in the private repository.
For more details about this task and its usage see the build repository tutorial

Attribute | Description | Required
--- | --- | ---
from | the name of the resolver in which the module must be found | Yes
to | the name of the resolver in which the module must be installed | Yes
organisation | the name of the organisation of the module to install | Yes
module | the name of the module to install | Yes
branch | the branch of the module to install since 2.0 | No, defaults to default branch with exact matcher, '*' with any other matcher
revision | the revision of the module to install | Yes
type | the type(s) of artefact(s) to install. You can give multiple values separated by commas | No, defaults to '*' meaning all types
conf | the configurations to install. Only the dependencies of the specified configurations will be installed. since 2.3 | No, defaults to '*' meaning all configurations
validate | true to force ivy files validation against ivy.xsd, false to force no validation | No. Defaults to default ivy value (as configured in configuration file)
overwrite | true to override modules already present in the destination resolver, false otherwise | No, defaults to false
transitive | true to install the module and all its transitive dependencies, false to install only the module | No, defaults to false
matcher | the name of the matcher to use to find the modules to install | No, defaults to exact
settingsRef | A reference to the ivy settings that must be used by this task (since 2.0) | No, 'ivy.instance' is taken by default.
haltonfailure | true to fail build on unresolved dependencies since 2.0 | No, defaults to true

# Examples

    <ivy:install organisation="apache" module="commons-lang" revision="2.0" from="ivyrep" to="myfsresolver"/>

Installs the module commons-lang from apache in revision 2.0 in the resolver myfsresolver. The module is found in the resolver named 'ivyrep'.