To view missing dependencies of package-1.2.3:

    lspkg -m id package-1.2.3

To view all direct dependencies of package-1.2.3:

    lspkg -i id package-1.2.3

To construct complete tree of missing dependencies for package-1.2.3:

    lspkg -d id package-1.2.3

Not only direct dependencies of package-1.2.3 will be included, but the required ones for their respective building as well.

To construct complete tree of all dependencies for package-1.2.3:

    lspkg -D id package-1.2.3

Reverse dependencies

There is command to view reverse dependencies: packages, which are dependent on the specified name (all previous commands were listing the required ones for the specified name).

    lspkg -r id package-1.2.3

That command allows to estimate the package set, which falls under the influence of changes inside package-1.2.3

Likewise all another modes of lspkg(1), the given launch supports package groups:

    lspkg -r id package-1.2.3,one-1.0,two-2.0
    lspkg -r id group.src