debian

Documentation

Index

• type Cmd
  • func New() Cmd
  • func (d Cmd) Dependencies(target string) (graph.Deps, error)

Types

type Cmd

type Cmd struct {
	Directory string
	Upload    bool
	DebCmd    func(...string) (string, error)
}

func New

func New() Cmd

New returns a new Cmd that implements "apt-cache" to find dependency information.

func (Cmd) Dependencies

func (d Cmd) Dependencies(target string) (graph.Deps, error)

Dependencies returns a dependency graph by analyzing a debian package.Dependencies. Notes:

(A "valid dependency" is one that has a valid path in "d.Directory+target"). Many types of
packages are found when running d.DebCmd and it is important to determine which ones
are used by the system. This is the reason we debug errors when a tarball upload fails.

Analysis steps are as follows:

1. Find all transitive dependencies for the target package/.
2. Upload all valid dependencies and retrieve locator information.
3. Loop through all valid dependencies and find their direct dependencies using d.DebCmd
4. Construct a dependency graph with the direct dependency information.Dependencies