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Lemmy interoperability with other Fediverse projects

Hi everyone!

I’m new here and I wonder if you have any advice/testimonials to share regarding Fediverse interoperability.

I’m working on a post about it for my blog series The Future is Federated. I’d like to do a show & tell, demonstrating what interoperability looks like between and , + a federated blog to start with.

There’s a superb post by @informapirata about Lemmy and Friendica communities: informapirata.it/…/mastodon-tips-how-to-use-frien… and I wonder if you have ever tried further integrations.

I know this sounds crazy, but does work with Lemmy? I’m asking because I use it with not only but also and Friendica.

Anyway, any testimonials and tips would be greatly appreciated!

Thanks!

@_elena

aasatru ,
@aasatru@kbin.earth avatar

Hi, and welcome!

Lemmy does not, as of now, interoperate very well with Fediverse services such as Mastodon and Pixelfed. Sure, you can follow Lemmy communities from Mastodon, but it's not a pleasant experience. The group just boosts everything that is ever posted to it.

Likewise, Lemmy does not work with Phanphy - it has its own API, and separate apps. It's too different from Pixelfed/Mastodon for it to make sense to share an API.

If you search for @elena at mastodon.social you will, however, be able to see your user from there; you can view this post, and if you have an account you can comment on it and contribute to the discussion like anyone else. You can also boost the post or comments to it, making it possible for content from Lemmy to reach far and wide. We sometimes do get comments from Mastodon users, so it clear that this happens every now and then, but mostly it's kept separate.

Mastodon users can also post to Lemmy by tagging a community (like they would tag an a.gup.pe group), but it's not very intuitive.

We commonly refer to Lemmy as part of the Threadiverse - a subset of the Fediverse which revolves around threaded discussions around shared content (Reddit like). The main platforms are Lemmy, Mbin (which is what I'm currently posting from), and PieFed.

Mbin and PieFed go further in the direction of interoperability than Lemmy does. Mbin supports Mastodon-like microblogging; if you check out the search for the hashtag Lemmy, you'll see not only this post, but also microblogs from Mastodon and all kinds of content. Limited, of course, by what is federated with that instance (Kbin.earth doesn't have too many users).

In Piefed, users can follow Mastodon groups made with a.gup.pe, such as the knitting group. Often Mastodon users start their posts by tagging each other, so it doesn't look completely native, but it can be neat. You can also follow PeerTube channels directly in Piefed.

In short, it's quite complicated - there are different platforms, and they all solve interoperability differently and prioritize it to different degrees. There's always the possibility that Mastodon users will stop by and say hello, but how easy it is made for them to do so varies quite a lot.

informapirata ,
@informapirata@mastodon.uno avatar

@aasatru @_elena @elena Unfortunately, Mastodon staff has no interest in decently managing Activitypub groups. They are probably working on an implementation that is incompatible with any other platform and could take away visibility from Mastodon...

PS: Lemmy is the only platform that has had an exploit that overshadows Mastodon's success

aasatru ,
@aasatru@kbin.earth avatar

"probably" is a nice word here. I have seen no indication that Mastodon plans to make their groups difficult to work with for other platforms. There is, however, many interests to take into account to ensure a good user experience, and not one solution is guaranteed to work well for everyone. What works in the Threadiverse might very well be terrible in Mastodon. They follow very different network dynamics.

isaac ,
@isaac@lakora.us avatar

ActivityPub addressing is really somewhat complex and pretty much any server is going to abstract it with things like at-mentions, sometimes making different assumptions. When I reply to lemmy posts from my microblog.pub server, I sometimes need to make sure to include both the user (@elena) and community (@fediverse) if they happen to be on different domains. Otherwise my server's addressing won't send it to the right place. And I doubt other lemmy instances will see this post unless I tag them too.

elena OP ,

Thank you for the explanation! May I quote you in my (future) blog post about Lemmy?

totally_notAcat ,

I can see this from my lemmy.blahaj.zone account

Though idk if it is Elena’s reply that made it federate

muntedcrocodile ,
@muntedcrocodile@lemm.ee avatar

Its utter chaos some things federate some dont some federate in one direction but not the other some just mess with formatting. Someone really needs to come in and fix the whole mess. If i where to fix it id start with that flask implementation of lemmy then add whatever additional routes are required to make it simultaneously a mastodon server. The dream would be a single account that works across all federated services simultaneously federating the same post with the same comments across all front ends. Never going to happen tho sadly.

elena OP ,

I’m holding out hope that one single Fediverse identity will be a possibility in the future. Discussion here: thenewstack.io/one-login-towards-a-single-fediver…

Ludrol , (edited )
@Ludrol@szmer.info avatar

I have only observed Lemmy->Mastodon and Mastodon->Lemmy

If I follow a community, in mastodon it will show as boosts and will show Title + link to the original post with all the comments also as boosts. It has some probability of working. Not always. I couldn’t get hashtags to work.

If someone mentions some lemmy community it will get federated into that community but only into first mentioned community. The first line of a microblog will be set as a title. When users write hashtags and mentions first, it will be unreadable. Not all replies will get federated back and forth.

P.S. I have seen kbin [R.I.P] (Long Live Mbin) posts on lemmy and it worked good

troyunrau ,
@troyunrau@lemmy.ca avatar

Wait, you can follow Mastadon from Lemmy already? How?

Ludrol ,
@Ludrol@szmer.info avatar

You can federate and respond but not really follow.

troyunrau ,
@troyunrau@lemmy.ca avatar

Okay, but how.

Ludrol ,
@Ludrol@szmer.info avatar

I just checked. You can respond if someone mentioned the lemmy community and there is a post on lemmy to respond to and that response will be seen on mastodon.

troyunrau ,
@troyunrau@lemmy.ca avatar

So no way to pull Mastadon hosted content into Lemmy.

Ludrol ,
@Ludrol@szmer.info avatar

I didn’t see a bug report for it. Feel free to file one on github.

elena OP ,

Thank you for the explanation! Follow-up question: if you follow a Lemmy community in Mastodon, do you feel like your feed is filled with messages from that community? Like, does it get noisy fast? (But I’m thinking if they show up as boosts I could simply filter out boosts in my Ivory app)…

neblem ,

You can put Lemmy communities in lists so they don’t spam your home feed. fedi.tips/how-to-use-the-lists-feature-on-mastodo…

elena OP ,

interesting! thank you for the tip :)

Ludrol ,
@Ludrol@szmer.info avatar

Very similar to a.gup.pe groups but even more disjointed. It also depends if community has thousands of active users or just a dozen.

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