local last_op_canceled -> boolean

Was last operation canceled?

local target_initialized -> boolean

Has Pkg::TargetInit run?

local source_initialized -> boolean

Has Pkg::SourceStartCache run?

global EnsureTargetInit () -> void

Ensure that Pkg:: calls work. This may become superfluous.

global EnsureSourceInit () -> void

Ensure that Pkg:: calls working with the installation sources work

global Available (string package) -> boolean

Is a package available?

Parameters:

package

Return value:

true if yes

global Installed (string package) -> boolean

Is a package installed?

Parameters:

package

Return value:

true if yes

global CheckAndInstallPackages (list<string> packages) -> boolean

Check if packages are installed

Install them if they are not and user approves installation

Parameters:

packages

Return value:

true if installation succeeded or packages were installed, false otherwise

global CheckAndInstallPackagesInteractive (list<string> packages) -> boolean

Check if packages are installed

Install them if they are not and user approves installation If installation fails (or wasn't allowed), ask user if he wants to continue

Parameters:

packages

a list of packages to check (and install)

Return value:

true if installation succeeded, packages were installed before or user decided to continue, false otherwise