[Issue 8858] DMD's -v option doesn't output dependencies with imports inside functions

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=8858

--- Comment #5 from Jonathan Marler <johnnymarler at gmail.com> ---
This PR (https://github.com/dlang/dmd/pull/7400) adds the "-deps-" option to
dmd so that it will analyze dependencies without printing them.  This will
allow rdmd to get the imports via "-v" without adding extra work to create the
dependency file or print them to stderr.

This PR will add the "-deps-" option when rdmd calls dmd
(https://github.com/dlang/tools/pull/268).

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