Can you give specific examples of "what a typical user expects" that are missing from Emacs-based programming environments (SLIME, and/or others)? I'm not suggesting there aren't any, I'd just like to know your list.
Lisp is also a symbolic language. Meaning the code work on symbols, not data, only at evaluation the value of the symbol is known. There’s a lot of symbols manipulation routines like macros, intern, package loading,… that prevent to statically know the code.
It’s why people use the REPL flow.
- Non-buffer based workflows.
- Easy access to settings.
- Easy ways to change or switch my compiler.
- Integrated with typical lisp tooling for library, system, and package management. (For example, what Emacs button do I press to set or clear my ASDF compile cache?)
- Better integration of the profiler and debugger. When a Lisp error happens, yet another buffer pops up (breaking the arrangement of all your code windows you set up), this buffer may not even be the only one (but the others are hidden somewhere), and it's not clear what you can even click or expand to see more information (there's a tremendous amount, extremely non-discoverable).
- Good getting started: built in guide for structural editing, REPL workflow, etc.
...and much much more. I say all of this as someone who basically has only used and invested in Emacs for 20 years. I love sharing Emacs with people who like weird technologies and rabbit holes, the real "hacker"-type people. I hate sharing Emacs with people who want to be productive in an hour or so with a Lisp project, because I know within 5 minutes they'll be disappointed, and never get the best of the experience because it's too much uninteresting investment.
I prefer writing Lisp with Emacs+SLIME over anything else. It's extraordinarily powerful, and with enough grit, you can get it to do almost anything you want. But I'm also jealous of people who get to use, say, polished JetBrains products whose goal is to try to give you the best experience possible for your specific programming language.
"We have one," no, this is a consistent problem with people who evangelize Lisp. We have had "IDEs" for decades. Most of them, except the couple commercially supported ones, were "experimental", "incomplete", "buggy", etc. This includes the one you link here.
Are these projects valuable as a starting point for other hackers to join in and help? Sure, maybe. Are they helpful for a new programmer? Almost always the answer has been "no". I have first-hand experience subjecting a programmer to one of these tools, and I myself getting incredibly frustrated at how broken it is. Imagine somebody completely new.
You in particular love to advertise these different projects as a form of Lisp evangelism. Advertising the projects is great—I hope they attract helpers—but I think your language around them is deceiving.
> Because yes, before 2023 we could complain there were no JetBrains IDE plugin for Common Lisp, since 2023, we have one.
"We have one" in the absolutely most rudimentary interpretation of that phrase. What we don't have is a working JetBrains Common Lisp IDE suitable for production use.
In order to try to promote a realistic view as to why Lisp doesn't attract more programmers in 2026, I myself will continue to point out Lisp's highly substandard tooling offering until there's an actual product that works. Any Joe can spend a weekend making a 1/2 baked, proof of concept IDE. Even more so now with all the AI vibecoding tools we have at our disposal. It takes much more to make something that checks all the boxes.
(I'm not even evangelizing in these comments so thanks for the feedback I guess!)
Too many only know Emacs apparently.