[ITA] duplicity

[Libor Ukropec]

Hi Brian,
Dne 07.04.2022 v 1:40 Brian Inglis napsal(a):
> On 2022-04-06 16:10, Libor Ukropec wrote:
>> I'd like to offer to adopt maintenance of duplicity (Encrypted 
>> bandwidth-efficient backup system)
>> Information from https://duplicity.gitlab.io/ - """The last stable 0.7 
>> release is *0.7.19*, released Apr 19, 2019""", while cygwin contains 
>> 0.7.11 from 2017
>> Updated cygport:
>> https://github.com/cz6ace/cygwin-duplicity
> 
> You need to define BUILD_REQUIRES and list all Cygwin packages needed to 
> build this package:
> 
> https://cygwin.github.io/cygport/check_funcs_cygpart.html#robo791
> 
> Use BUILD_REQUIRES+=" ..." for additional lines of packages.
> 
>> Updated build:
>> https://github.com/cz6ace/cygwin-duplicity/releases
> 
> See:
> 
>      https://cygwin.com/git/cygwin-packages/duplicity.git

This repository was my starting point, I just increased the version and 
prepared the package (below) for the new python dependency (fasterners). 
I did not see on the contribution page any mention to the `playground` 
thing and an automation - will try that, once my SSH key is added.

As my first contribution to cygwin I wanted to start with small steps 
and stay with 0.7 duplicity, which still depends on the Python 2.7

> 
> You can clone the repo for the original files, checkout a playground 
> branch, commit your changes and patches (and any extra source files), 
> define the upstream playground branch, and push your changes there, 
> which will run Scallywag CI under Github Actions (or Appveyor if you 
> configure that cygport option).
> 
>> Please note for successful installation the python 2.7 fasteners 
>> package is required, not yet in cygwin, I plan to offer [ITP] for it:
>> cygport:
>> https://github.com/cz6ace/cygwin-python-fasteners
>> build:
>> https://github.com/cz6ace/cygwin-python-fasteners/releases
> 
> Need to support python3/39 now: see python package cygports in 
> cygwin-packages repos as above!

Is it a must at this moment? As I stated above, duplicity 0.7.x requires 
Python 2.7

I changed the `inherit` to python-wheel, which should support 2.7,3.8, 3.9:

inherit python-wheel

PYTHON_WHEEL_VERSIONS="2.7:3.8:3.9"

But the cygport does not create the tar.cz archive for 2.7 and fails with

... <shortened the list>
-usr/lib/python2.7/site-packages/fasteners/version.py
...
*** ERROR: Packages are missing files:


I tried previous cygport version, but it fails creating python 3.7 package.

I'll try to look to cygport sources if I am able to see something, which 
I doubt.

> 
>> Python standard library provides a lock for threads (both a reentrant 
>> one, and a non-reentrant one, see below). Fasteners extends this, and 
>> provides a lock for processes, as well as Reader Writer locks for both 
>> threads and processes.
>>
>> This library (in newer version) is also present in LInux 
>> distributions, e.g. Ubuntu:
>> https://packages.ubuntu.com/source/focal/s390x/python-fasteners
>