Type Alias KernelInstallVisitor 

pub type KernelInstallVisitor = Box<dyn Fn(&ScopeNode, ScopeNodeIdx, &ScopeKernel) + Send + Sync>;

Ride-along visitor for kernel-installation events. Set by the runner when dryrun=kernels is requested so each install_kernel fires the printer as the planning walk encounters the scope. None (the default) keeps install a no-cost hot path.

Aliased Type

pub struct KernelInstallVisitor(/* private fields */);