[MacPorts] #54180: documentation for new portfile with git HEAD no tarball

[MacPorts]

#54180: documentation for new portfile with git HEAD no tarball
----------------------------+-----------------
  Reporter:  gaming-hacker  |      Owner:
      Type:  enhancement    |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  guide          |    Version:
Resolution:                 |   Keywords:
      Port:                 |
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Changes (by mf2k):

 * keywords:  documentation =>
 * version:  2.4.1 =>
 * type:  update => enhancement


Old description:

> the documentation
> https://guide.macports.org/#development.creating-portfile
>
> is lacking a decent example of how to create a new portfile from a git
> repo, HEAD, not a released/stable tarball
>
> 1. there is no indication of how to create a sha256 checksum/hash
>
> 2. there is no indication of how to pass CMAKE macro definitions when
> there is no configure

New description:

 the documentation
 https://guide.macports.org/#development.creating-portfile

 is lacking a decent example of how to create a new portfile from a git
 repo, HEAD, not a released/stable tarball

 1. there is no indication of how to create a sha256 checksum/hash
 1. there is no indication of how to pass CMAKE macro definitions when
 there is no configure

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Ticket URL: <https://trac.macports.org/ticket/54180#comment:2>
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