Re: [gentoo-user] dynamic deps, wtf are they exactly

[Alan McKinnon]

On 27/09/2015 17:12, Mike Gilbert wrote:
> On Sun, Sep 27, 2015 at 11:07 AM, Alan McKinnon <alan.mckinnon@×××××.com> wrote:
>> So, my question: wtf are dynamic deps? How do I find the records they
>> must leave behind in portage?
>
> For the latter question, you can rebuild affected packages like so:
>
> emerge --with-bdeps=y @changed-deps.
>
> You can also add --changed-deps to your emerge command line for world updates.
>


Thanks. Running that gives surprising and unexpected results. I'm now
curious what changed-deps really does, and the man page is terse on this.

I would have thought portage already does that automatically, but I see
a difference. If a package's deps change, but everything is still
satisfied, portage will do nothing. Does @changed-deps rebuild
everything that changed anyway, regardless is portage thinks it still OK?

Also, these two similar commands return different results (I have
bdeps=y in DEFAULT_OPTS btw):

emerge -uND --changed-deps=y world         (51 packages)
emerge @changed-deps                       (11 packages)

Do you know why those commands give different results?
The smaller list is a strict subset of the longer one.

-- 
Alan McKinnon
alan.mckinnon@×××××.com