[m-rev.] for review: Optimise dependency file index maps.

[Zoltan Somogyi]

On Mon, 28 Nov 2022 17:40:58 +1100, Peter Wang <novalazy at gmail.com> wrote:

> On Mon, 28 Nov 2022 16:47:26 +1100 "Zoltan Somogyi" <zoltan.somogyi at runbox.com> wrote:
> > 
> > 2022-11-28 15:06 GMT+11:00 "Peter Wang" <novalazy at gmail.com>:
> > > Replace the type used in the mappings between dependency_file and
> > > dependency_file_index from dependency_file, which refers to targets by
> > > module_name, to a similar type that refers to targets by module_index.
> > 
> > I didn't understand that sentence until I read the diff, which is not good
> > for something that is supposed to explain the diff.
> > 
> 
> Ok, I've rewritten it.

Are you going to commit this? I would like to have a go at
rewriting this area of code to eliminate its "higher-order code
piled on top of more higher-order code" approach with
something much simpler.

Zoltan.