request for port create command, to build a portfile from a URL

[G Alexander]

I play in a different playground and primarily use either master, dev or develop branches as I run with latest codebase available.  ffmpeg, imagemagick, opencv, clang6, openblas, etc.  These get a lot of PRs everyday. 

Having to update the Portfiles manually with latest hash and date/version is not optimal.  

Why can't a script find the repo, verify hash and date automatically then archive or if you have a GitHub account verify your SSH, and just grab the repo without creating an archive.

> On Mar 7, 2018, at 02:32, Enrico Maria Crisostomo <enrico.m.crisostomo at gmail.com> wrote:
> 
> This is a little bit offtopic IMHO, anyway: I found surprising too that the github portgroup was not documented, given the high percentage of software that I build out of github repositories, and that's why I recently contributed the documentation of the github portgroup:
> 
> https://github.com/macports/macports-guide/pull/12
> 
> It has been merged some days ago. Yet, I don't see it online yet.
> 
>> On 7 Mar 2018, at 11:29, db <iamsudo at gmail.com> wrote:
>> 
>>> On 7 Mar 2018, at 01:53, Rainer Müller <raimue at macports.org> wrote:
>>>> On 2018-03-06 23:00, db wrote:
>>>> [...] an *overview* of how to write a portfile is much needed.
>>> Isn't this what this chapter in the guide is supposed to provide?
>>> https://guide.macports.org/#development
>> 
>> Yes, supposed. When you're in it's difficult to say, but AFAIR I was probably trying to write a portfile for something hosted on GitHub without knowing about the relative portgroup and its documentation being buried somewhere under the prefix in the tcl file itself.
> 
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