`evil-org->` doesn't matter per se. It runs `evil-shift-right`, which
indents the selected region by the `evil-shift-width` amount.
`evil-shift-width` is set based on `tab-width`. I solved this specific
problem by overriding `evil-shift-width` using a timer in an org-mode hook.
The delay introduced by the timer was necessary, as something kept
overriding my settings. Perhaps the magic machinery that sets `tab-width`
in the source blocks can also set `evil-shift-width`. The best-case
scenario would be to have a list of variables that need to be set from
their major-mode buffer in the source blocks.

> May you please provide a detailed example where 8 spaces causes issues?

My lists are still indenting with 2 spaces, so I am not actually seeing 8
spaces. I have no idea why that is, but I very much like the 2-space
indentation.

```
- a
  - b
```

I see 4 spaces in numerical lists, which again, I have no idea about:

```
1. hi
   2. hi
      3. hi
```

So I don't see the effects of `tab-width` anywhere except in
`evil-shift-width`, as far as I can see currently.

On Sat, Mar 16, 2024 at 1:11 PM Ihor Radchenko <yantar92@posteo.net> wrote:

> Rudi C <rudiwillalwaysloveyou@gmail.com> writes:
>
> > Recently, a breaking change has been introduced in Org mode that sets the
> > default tab-width to 8 spaces (
> > https://list.orgmode.org/orgmode/8734y5d2gs.fsf@localhost/). This change
> > has made using Python source blocks in Org mode challenging, as
> operations
> > like `evil-org->` rely on `tab-width`, and Python code conventions
> > typically use 4 spaces for indentation.
>
> May you please provide more details on what exactly "evil-org->" refers
> to and what specific problems you encountered?
>
> > Moreover, using 8 spaces for indentation is generally unsuitable for
> small
> > laptop screens, where screen real estate is of utmost importance.
>
> May you please provide a detailed example where 8 spaces causes issues?
> In source blocks specifically, we make sure that tab width visually
> looks as in the corresponding source code buffer.
>
> --
> Ihor Radchenko // yantar92,
> Org mode contributor,
> Learn more about Org mode at <https://orgmode.org/>.
> Support Org development at <https://liberapay.com/org-mode>,
> or support my work at <https://liberapay.com/yantar92>
>