Re: A requires/provides approach to linking source code blocks

[Maxim Nikulin <manikulin@gmail.com>]

On 09/07/2021 02:32, Tim Cross wrote:
> Marko Schuetz-Schmuck writes:
> 
>> I would find it useful to have a more declarative way for specifying
>> sequence. I imagine e.g. using "#+REQUIRES:" and "#+PROVIDES:" to
>> capture dependency and then have the exporter compute a sequence
>> satisfying these. I would think that this makes the maintenance of the
>> dependencies more convenient.
> 
> My concern here is with the additional complexity. This is already a
> somewhat complex aspect of org mode and the behaviour you describe can
> effectively be done using noweb, although as you say, not as
> declarative in style.

There was a feature request for dependencies between code blocks to run 
them in proper order a half of a year ago.

I think, it is better to try such feature as an extension of org, as a 
separate package. I suspect that some non-obvious issue may arise. 
Likely, to be convenient, it will be desired to autofill 
requires/provides attributes using some tools related to particular 
language.

The question is whether org code is organized in such way, so extensions 
of this kind are possible without code duplication. Maybe API could be 
adjusted. On the other hand, even maintaining of stable semi-internal 
API sometimes is significant burden.

P.S. I am reading the mail list through NNTP news.gmain.io. I have 
noticed that personal copies sometimes arrives without mail list 
address. Sorry if you will have to manually add it to reply.