Dne 14. 07. 25 v 16:27 Jan Stanek napsal(a):
Hello everyone!

On Fri, Jul 11, 2025 at 9:09 AM Vitaly Zaitsev via devel
<devel@lists.fedoraproject.org> wrote:
On 10/07/2025 13:14, Aoife Moloney via devel-announce wrote:
We aim to move away from manual management of
<code>/usr/bin/node</code>, <code>/usr/bin/npm</code>, and similar
symlinks to leveraging update-alternatives system.
AFAIK, the alternatives system doesn't work reliably on immutable
(ostree) Fedora versions.
Thanks for raising this issue; we of course forgot about rpm-ostree
and what complications it could bring. This is a compelling argument
to reconsider.

Perhaps somebody would not mind to update this guidelines section reflecting this information?

https://docs.fedoraproject.org/en-US/packaging-guidelines/Alternatives/

In my reading, this section (kind of) promotes the alternatives, while this feedback suggest quite strongly against.


Vít


If you need to provide multiple /usr/bin/node symlinks, consider
generating swappable packages: nodeAB-bin, nodeXY-bin, etc. Then users
will be able to use dnf swap feature:

sudo dnf swap nodeAB-bin nodeXY-bin --allowerasing
And thanks for this idea as well – this would not occur to me
instinctively, since I would assume that installing one stream
(including the -bin package) would prevent installation of any other
streams (as it would conflict with the other -bin package). Then I
read up some more on weak dependencies and as it turns out, dnf is
smart enough to remove any Recommended package from the transaction if
it would cause a conflict. With this information, the swappable
package approach seems doable. I'll update the wiki page with the
feedback and we'll start experimenting with it.

Best regards!

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