Re: Add zuul.el package to ELPA

[Niklas Eklund]

Philip Kaludercic <philipk@posteo.net> writes:

> Niklas Eklund <niklas.eklund@posteo.net> writes:
>
>> Philip Kaludercic <philipk@posteo.net> writes:
>>
>>> Niklas Eklund <niklas.eklund@posteo.net> writes:
>>>
>>>> Niklas Eklund <niklas.eklund@posteo.net> writes:
>>>>
>>>>> Philip Kaludercic <philipk@posteo.net> writes:
>>>>>
>>>>>> Niklas Eklund <niklas.eklund@posteo.net> writes:
>>>>>>
>>>>>>>> I believe if you used compat, you can reduce the minimal version of
>>>>>>>> Emacs down to 26.1, and the only hard dependency appears to be
>>>>>>>> project.el?
>>>>
>>>> One other thing I saw that package lint complained about, and that I
>>>> couldn't find in the compat package was with-connection-local-variables?
>>>>
>>>> 486:3: error: You should depend on (emacs "27.1") if you need
>>>> `with-connection-local-variables'.
>>>>
>>>> I see in the manual that it doesn't seem to be supported
>>>> https://git.sr.ht/~pkal/compat/tree/master/compat.texi#L1753. So I guess
>>>> I can lower it to 27.1 the most, but that would be a good win over 28.1 :)
>>>
>>> True, that is missing, but reading through the source in files-x.el, it
>>> *might* be possible to add that functionality in a backwards
>>>  way?  But if not, 27.1 is still a considerable improvement considering
>>>  that Debian Stable is currently distributing that version.
>>
>> Absolutely, a great improvement! :) If that is added in the future that
>> would be even better of course, seems like that's the only thing
>> blocking the package from supporting 26. 
>>
>> Once you have released a new version of compat I'll try to depend on
>> that. Would this patch be sufficient you think? (given that I update the
>> version of compat to the latest)
>>
>> From a698110e477a1e640b851f912601c67e19bea6b7 Mon Sep 17 00:00:00 2001
>> From: Niklas Eklund <niklas.eklund@posteo.net>
>> Date: Wed, 31 Aug 2022 13:38:06 +0200
>> Subject: [PATCH] Use compat package to support older Emacs version
>>
>> This patch lowers the required Emacs version from 28.1 to 27.1. This
>> is done by using the compat package in combination with an explicit
>> dependency to the project package.
>> ---
>>  zuul.el | 7 +++++--
>>  1 file changed, 5 insertions(+), 2 deletions(-)
>>
>> diff --git a/zuul.el b/zuul.el
>> index f2b146c..34d4bf7 100644
>> --- a/zuul.el
>> +++ b/zuul.el
>> @@ -5,7 +5,7 @@
>>  ;; Author: Niklas Eklund <niklas.eklund@posteo.net>
>>  ;; URL: https://git.sr.ht/~niklaseklund/zuul.el
>>  ;; Version: 0.3
>> -;; Package-Requires: ((emacs "28.1"))
>> +;; Package-Requires: ((emacs "27.1") (compat "2.1.2.2") (project "0.8.1"))
>>  ;; Keywords: convenience tools
>>  
>>  ;; This file is not part of GNU Emacs.
>> @@ -41,6 +41,9 @@
>>  
>>  (require 'ansi-color)
>>  (require 'comint)
>> +(require 'compat)
>> +(require 'compat-27)
>> +(require 'compat-28)
>
> These two require statements aren't required, unless you depend on some
> function that has been updated between versions (e.g. assoc used to only
> take two arguments, and now takes 3, so to avoid overriding the old call
> compat provides a prefixed alternative "compat-assoc").

Alright, so only (require 'compat) then, and it will figure out that it
needs functions from compat-27 or compat-28 internally?

>>  (require 'project)
>>  (eval-when-compile (require 'rx))
>>  (require 'subr-x)
>> @@ -770,7 +773,7 @@ Optionally provide extra parameters PARAMS, PARSER, 
>> METHOD, BUFFER or HEADERS."
>>    "Parse the output of a json build."
>>    (let ((build (zuul--request-json-parser)))
>>      (string-join
>> -     (flatten-list
>> +     (flatten-tree
>>        (seq-map #'zuul--build-playbook-output build))
>>       "\n")))