Struct Installer 

pub struct Installer<'a> { /* private fields */ }

A skill, the program it belongs to, and the machine to put it on.

Implementations

impl<'a> Installer<'a>

pub const fn new( catalog: &'a Catalog, env: &'a Environment, skill: &'a Skill, program: &'a Program, ) -> Self

An installer for one skill of one program.

pub fn assess(&self, consent: &Consent) -> Result<Assessment, PlanError>

What would happen, place by place. Writes nothing.

Errors

Returns an error only when no plan can be made.

pub fn apply( &self, assessment: &Assessment, approval: &Approval, ) -> Vec<Outcome>

Install where approved, overwrite where explicitly asked, and update whatever needs no approval.

pub fn update(&self) -> Result<Vec<Outcome>, PlanError>

Bring every unchanged copy this program installed up to the running version. Installs nothing new and needs no approval.

Errors

Returns an error only when no plan can be made.

pub fn remove(&self) -> Result<Vec<Outcome>, PlanError>

Remove every unchanged copy this program installed. A modified copy and anything not this program’s is left where it is.

Errors

Returns an error only when no plan can be made.

Trait Implementations

impl<'a> Clone for Installer<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for Installer<'a>

impl<'a> Debug for Installer<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.