[Issue 11792] Investigate migrating to a meta repo

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=11792

--- Comment #10 from Dicebot <public at dicebot.lv> ---
> It is easy in git to see the log of a specific directory, "git log phobos" or "gitk phobos"

I was referring to following on GitHub, not exploring plain git history. For
example I am currently subscribed to all changes in Phobos but not in DMD and
druntime - combined together it is simply too much stuff to me to follow.

> - Makefiles and build scripts no longer need to assume (but allow overriding) location of other subcomponents - their location will be guaranteed. This means they can be simplified.

This is addressed by my proposed scheme (with submodules) too.

As for the other points - you propose to improve experience for very small
group of developers (those who need to do history bisection and/or do changes
on multiple repos at once) at the cost of harming experience for more casual
one (anyone who does D development / reviewing or simply wants to know what
happens in more details).

I think having specialized tool (Digger) for specialized tasks is more
appropriate that having specialized tool (tagging bot + custom activity feed
filters) for common tasks.

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