GHC.Unit.Home.ModInfo

The basic loaded interface file: every loaded module has one of these, even if it is imported from another package

Extra information that has been created from the ModIface for the module, typically during typechecking

The actual artifact we would like to link to access things in this module. See Note [Home module build products]

hm_linkable might be empty:

1. If this is an .hs-boot module

2. Temporarily during compilation if we pruned away the old linkable because it was out of date.

When re-linking a module (GHC.Driver.Main.HscNoRecomp), we construct the HomeModInfo by building a new ModDetails from the old ModIface (only).