[macports-base] 02/03: Add 'rleaves' alias

[Rainer Müller]

On 11/05/2017 07:36 AM, Joshua Root wrote:
> On 2017-11-5 16:47 , Eitan Adler wrote:
>> On 1 March 2017 at 03:34, Rainer Müller <raimue at macports.org> wrote:
>>> Sorry, I missed this earlier in the pull request [1], but I would be fine
>>> with just changing the definition of leaves. The new 'rleaves' makes more
>>> sense to me. Is there actually a use case for the old 'leaves', where this
>>> pseudo-port cannot be replaced with 'rleaves'?
>>
>> I sometimes abused the old leaves as a debugging tool when I needed to
>> clear away some development ports, but not everything. That said, in
>> almost every other use case I wanted the rleaves behavior.

> It's a longer list to go through if you're checking for ports you
> actually want to mark as requested. Also the name "leaves" doesn't
> really make sense with the new behaviour since it can list a lot of
> ports that are not leaf nodes on the dependency graph.

When would you go through the old "leaves" to mark them as requested? If the
next step was to remove unrequested ports, you could even have missed some ports
you wanted to keep, but they would then be uninstalled because did not want to
keep another dependent.

I agree that 'leaves' does not really fit any more now that the behavior is
always recursive. However, I do not have anything better to propose.
Maybe "removable", "unneeded", ...?

Are there other package managers with a similar feature? I only know of apt
which has the 'apt-get autoremove' command, which removed packages that were
"automatically installed and are no longer required". But it does not seem to
use a short form to describe this set either.

Rainer