How To Setup Linting And Formatting In Neovim To Replace null-ls

Hey! In this step by step guide, I show you how to setup linting & formatting in Neovim with conform.nvim and nvim-lint in order to replace this specific functionality from the now archived null-ls plugin.
I hope you enjoy it and find it helpful!
🚀 My config: github.com/josean-dev/dev-env...
✍🏽 Step-by-Step Blog Post: www.josean.com/posts/neovim-l...
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📹 lazy.nvim tutorial video - • How To Use lazy.nvim F...
📹 How to setup lsp in Neovim - • How I Setup LSP In Neo...
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Helpful links:
lazy.nvim: github.com/folke/lazy.nvim
mason.nvim: github.com/williamboman/mason...
mason-tools-installer: github.com/WhoIsSethDaniel/ma...
conform.nvim: github.com/stevearc/conform.nvim
nvim-lint: github.com/mfussenegger/nvim-...
⏰ Timestamps:
00:00 - Introduction
00:38 - lazy.nvim recap
01:52 - Removing null-ls & mason-null-ls
04:21 - Formatting with conform.nvim
13:52 - Linting with nvim-lint
23:58 - Auto installing linters & formatters with mason
24:57 - New colorscheme
26:00 - Conclusion
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[@joseanmartinez]

Hey guys! So there's also a community fork for null-ls you can also try called none-ls. I've added this to my config in case you want to stick with that. You'd have to uncomment the event property of the "lsp/none-ls.lua" file if you want to use that and you can disable the alternative approach in this video by commenting this line out in "linting.lua" and "formatting.lua". That's of course if you're using my config as is, but I'd recommend you adapt it to your liking instead. I also wanted to point out from the video that the reason I chose conform.nvim over formatter.nvim is how easy and similar it was to nvim-lint and because when using formatters like "prettier", it'll check if you have it installed in node_modules first and execute that instead!

[@r4k4210]

I followed your config and works really nice, i really like it. I moved from Astrovim to my own configuration based on yours. Thanks for your amazing work.

[@ayanko]

Exceptional tutorial how to really PROPER configure FORMATTING and LINTING in 2024 !!! Thx a lot!

[@elveglos]

Thank you Josean for keeping us up to date. Amazing work!

[@JT-mr3db]

I just spent most of the day following your vids and FINALLY I have the neovim setup I have always wanted. AMAZING!

[@joseanmartinez]

That’s awesome, happy to hear that!

[@kriansa]

"Final(ly)" and "(neo)vim setup" are not words that usually go well together.

[@user-ze3bc8hw3y]

Hey great setup!! I am using a lot of this as you explained and it is working great... Please keep up the good work - Awesome work !!!!

[@xzskywalkersun515]

Hi Josean, I've followed all your config env videos and must say, I REALLY ENJOY THEM. Having no development experience, your content has sparked my interest in coding. Thank you! For your upcoming videos, I'd love to see one on integrating GIT into the workflow, along with some tips on file/folder management for developers. Additionally, code sessions or small demo projects demonstrating the use of those keymaps in a real scenario would be incredibly helpful. As a beginner, it's challenging to remember and implement all those shortcuts. Also, I know you don't typically code in Python, but I'm curious if you could create videos on integrating ChatGPT within the terminal environment and developing some projects with it. Many thanks and best regards!

[@ya2138]

Very helpful tutorial with a lots of explanation. Thanks a lot!!!

[@wojciech-kulik]

Man, you are the wizzard! I watched your previous videos and I was thinking "I need to figure out how to setup Swift linter & formatter (which are not available in Mason)". The next day you published the video! THANKS, you make great tutorials!

[@joseanmartinez]

I really appreciate that! Glad I could help.

[@jiboneus]

Hay Josean, thanks for making these greate Nvim videos. I've been following a long your videos and the only changes that i've made to my config was to change the theme from night-fly to tokyonight,... 😅

[@gioelem5957]

Great job, thank you very much. I switched to Lazy following your videos and I'm loving them

[@joseanmartinez]

Awesome! Thanks for the feedback, glad you’re enjoying them!

[@nikensss]

Oh, thank you very much! I was able to make the switch from lsp-zero and null-ls to your settings super quickly. I managed to reconfigure my rust setup (which I did break), and I was even able to use an SQL formatter not supported yet (sleek). Thank you very much! I had been looking for a replacement since the author announced the archiving, but I didn't find anything.

[@joseanmartinez]

Glad I could help!

[@JustFreakazoid]

Extremely useful videos, thanks!

[@NickyTheRook]

Nice! Thanks. Exactly what I was looking for! Now to find a way to use only the tools a certain project uses based on which config files are present. Like only use prettier if a prettierrc exists, only use deno_fmt if a deno.json exists, only use biome if a biome.json exists etc. Thankfully neovim uses lua, so I'm certain I can look up how to conditionally call that format function!

[@mukarram181]

Very helpful video for a begginer. Thanks man

[@micaelviana]

It's crazy when you think that a single plugin could solve all this on its own. No wonder he got tired

[@yesidev4131]

Man Thanks you a lot of, your nvim videos restored my spirits, I had my nvim config with only vimscript, when lua appeared I couldn't understand how to implement, because I couldn't find something concise, each guide I found had different implementations, added to the fact that there was competition between package installers, English is not my native language but Spanish and there was no information in my language so it personally seemed very difficult to stay up to date besides the fact that I had started using new technologies in my work and I didn't have time, I had to go back to vscode, but your videos and your configuration helped me finally understand lua in neovim and make my own configurations, thank you very much

[@joseanmartinez]

Awesome! Really happy to hear that.

[@tiny_mystery]

Great video ! I think it is better to have two seperate plugins. Atleast, I used null-ls for formatting only XD. I was not aware about conform.nvim, thanks for the video !

[@hodasalim4237]

Thank you ! I have been looking forward to this !

[@joseanmartinez]

Happy to hear that! Hope you find it helpful!

[@JonathanMorrisMusic]

Great content as usual! Still undecided if I'll use both of these or none-ls as a replacement but really appreciate the walkthrough! Nice to have formatting and linting separated out like this.

[@joseanmartinez]

Awesome! Appreciate the feedback and support!

[@brendon205]

Are you using none-ls? I'm wondering if I should use it

[@maleldil1]

@@brendon205 you should continue to use if you were using null-ls IMO. It's a drop-in replacement, an I think it integrates better with the rest of the ecosystem, as it's considered as an internal LSP server, so you can use it with lsp-zero, vim.lsp.buf.format, etc., while conform is completely separate thing.

[@nevermindthelabel]

really appreciate this, had to watch as soon as I saw you posted.

[@joseanmartinez]

Awesome! Happy to hear that.

[@gavenblsn4753]

you truly are an amazing man. thank you and keep up the glorious work. 👍👍👍

[@prrockzed]

Was waiting for this video. Thanks a ton!

[@joseanmartinez]

Glad I could help!

[@methuselahmark7818]

Thanks for all you do. Actually i don't have a pc but i use my mobile and termux to follow along and will love you to do a video showing how to code with Neovim and also open live server at the same time to see changes live. Thank you

[@AqgvP07r-hq3vu]

He saves my life and career.

[@qwarlock4126]

Gosh you really have this brilliant way of clearly explaining. You are always moving at a clip but not so fast that one has to constantly move back. Thanks. Great explanation of both linting and formatting setup. By the by, is there any plugin that adds back the Code Actions popup that we lose I believe when we lose null_ls? Thanks again!

[@annakarolinafranz5946]

thanks. Congratulations on the channel, I always follow

[@thiagopuntar]

I was anxious waiting for this... worked fine here! Thanks man, keep publishing.

[@joseanmartinez]

Awesome! Happy to hear that.

[@blz777]

Well done, thank you very much for this content! The only thing I wish you added to the explanation is how to manually disable linting messages for a file if we find them distracting. All the best!

[@blz777]

Something along the lines of: -- hide virtual text and signs vim.keymap.set("n", "mh", function() vim.diagnostic.config({ virtual_text = false, signs = false }) end, { desc = "Manual Hide for virtual text" }) -- show virtual text and signs vim.keymap.set("n", "ms", function() vim.diagnostic.config({ virtual_text = true, signs = true }) end, { desc = "Manual Show for virtual text" })

Thank you!

[@Aicellycut]

Thank you very much

[@bassamsaleh8034]

thanks a lot, it's very informative video.

[@alonso0188]

Thank you man.

[@theoldeenglish5789]

Thank you so much, great video. Makes it much easier for me to understand how to configure Neovim correctly. But there is still one question: How to setup neovim so that pylint or mypy works correctly in virtual environments.

[@hungvx-dev]

Very helpful tutorial with a lots of explanation. Thanks a lot!!! But, How to auto fix eslint when formatting?

[@serhgoch]

Thank you for the video. dial.nvim extends default C-a/C-x movements, e.g. changing true to false and etc

[@joseanmartinez]

Good to know, thanks!

[@themike874]

I love you, and you conform configuration xd

[@IainSimmons]

Great video! Just FYI, someone forked null-ls and made a new repo none-ls. LazyVim has already added it as the default since it's meant to be a drop-in replacement. Your setup seems faster to me though, so I might give it a try. I was also burned by null-ls recently when i tried a few new things, forgot i added them, and then started getting nvim-cmp errors all over the place. Took me ages to figure out the source of the issue. I like here how you have things split up.

[@joseanmartinez]

I had no idea! Thanks for letting me know about that. I really enjoyed how easy it was to setup null-ls but I’m enjoying this approach as well, I guess it depends on what you prefer and the specific features you might need. Because I used null-ls solely for linting and formatting, I think it’s nice to have two plugins solely dedicated for that purpose.

[@joshuatye1027]

Wow thanks for letting us know about none-ls. I wonder how well it works with mason null-ls

[@ciegoavr]

Thanks you a lot of, your nvim videos helps me to understand how the packages works. Do you know how to setup neovim so that pylint works within a virtual environment (e.g. conda)?

[@antidotejack2771]

very helpfull

[@martinhalder7841]

Great content, have you tried efm-langserver as a replacement for null-ls?

[@aaronhsieh3798]

Thank you so much for the tutorial!! Want to know if I use clang_format for C++, how can I configure the file to change the indentation for this formatting

[@vladimirjankauskas3460]

Hello! Awesome explanation! I have a question regarding eslint setup. What is the benefit of setting it up with lint or null-ls compared to just an eslint-lsp ? It looks like setting it up through lsp provides code actions and requires less additional work of setting it up.

[@podgorniy.r]

Hello Josean, could you please help me with the bufferline configuration? How did you configure the transparent fill for the background next to the tabs? Previously, you had a black fill, but now it's darker than the tabs, and in addition to that, it's transparent.

[@saabirmohamed636]

Thanks for for this video so helpful , can you make a video on how to add the flutter tools plugin...(so flutter dart lsp...) I've been trying various configs ... but i can get it to run well.

[@wata1991]

have you ever had an issue where you get duplicate diagnostic messages from eslint and the TS lsp? If you have any suggestions would be great.

[@zachmoring284]

stevearc's stuff is all great. Aerial is one of my most-used plugins, Dressing is basically a requirement for Telescope so you can use the Telescope elements for selectors and such, and Oil is my favorite file editor. All of it is so good.

[@joseanmartinez]

Awesome!! I’m using dressing.nvim and love it too! So many cool plugins to discover, thanks for the tips!!

[@ecosse31]

That's amazing! I'll definitely bring it to my nvim config. How it works with lsp? For example, if I have eslint lsp, eslint config file in project and I run :ESLintFixAll command, is it has more priority than eslint_d linter? Do they work together?

[@joseanmartinez]

I'm honestly not entirely sure. I would imagine that the :EsLintFixAll command would youse the eslint lsp, but I haven't tried that out.

[@xyxytx]

Do you consider to do DAP video?

[@gavenblsn4753]

Hello Josean, question, how can i pass format options? lets say I want black to make the line width 100, how can I pass to the formatter

[@ghosthaunting15]

Finally

[@takayumaja9438]

how to formatting file extenstions .ejs on conform.nvim based style formatting with prettier or etc?

[@talio-5469]

Necesitamos mas gente como tu mano. Yo me tiraria pero yo no estoy para showmanship XD

[@joseanmartinez]

Gracias 🙏🏽

[@crusader_]

Does nvim tree show the prompt to create a file by default or is it neotree you're using

[@LeungWong]

nvim-lint doesn't seem to support code actions to fix lint issues automatically, something which null-ls/none-ls had. do you have some alternative for it, or do you simply not use that feature inside nvim?

[@aaronmcadam]

Great video! Is there a popular plugin for code actions yet?

[@joseanmartinez]

Well null-ls which is now none-ls which was forked by the community, has better support for code actions. There’s also a language server for eslint you can try to use it through the lsp. What I talk about in the video is more for just showing linting errors. Hope that helps!

[@idk-nv]

if i already use eslint_d，is eslint lsp still needed?

[@Noah-rm4br]

How do you enable line numbering? Appreciate the video btw! :) Subscribed and liked!

[@themohmand]

That's just a vim feature, just set this in your config vim opt.number = true

[@abdelhakimkhabir]

How can we make the linter not match the color of the text it highlights, but instead underline mistakes in red and suggestions in blue?

[@Sameer_Kumar]

@joseanmartinez Good work here, especially informing about the mason integration. I have one problem though, let's say as for your config, eslint_d gives offenses like let const, but there isn't any code actions. As far as I remember, eslint does correct offenses. Any ideas on this?

[@joseanmartinez]

Thanks for the feedback! Yea nvim_lint doesn’t have support for code actions as it’s just for displaying linting errors inside Neovim, for something like eslint there’s also a eslint language server you can try or I also heard about a community fork for null-ls called none-ls recently. I’m not entirely sure how well eslint code actions worked through null-ls as I didn’t use them very often.

[@ngophuctruong9382]

Great video! Could you tell me what plugin you use for terminal.Please

[@joseanmartinez]

Glad you found it helpful! I’m using iTerm2 for the terminal if that’s what you’re referring to

[@ngophuctruong9382]

@@joseanmartinez So happy to receive your answer. But i mean it is the terminal in Vim , like floaterm plugin, i can't find any way to configure it with lua. Can you give me some suggestion

[@oldcoyote]

Does anyone know how to do "fix all?". I miss the option from vs code to fix all lint and formatting issues

[@ahsanhabib3193]

Any plan on adding debuggers ...??

[@bartek...]

none-ls is forked and maintained by community null-ls. It is fully backward compatible, config stays intact.

[@thecodealchemist7095]

Something seems extra with your text selection... Is thst treesitter,-, context-objects?

[@joseanmartinez]

I’m mostly using Shift+V to select whole lines in visual mode and moving down several lines depending on what I need to select.

[@adonespitogonaif]

There is a new active fork of null-ls, it's called none-ls.

[@a_maxed_out_handle_of_30_chars]

thank you, will give it a try but null-ls is still working i'll switch when it completely breaks :)

[@joseanmartinez]

Yeah totally understand that!

[@TheRuancarlo]

Is none gonna fork null-ls?

[@annakarolinafranz5946]

Is your repository updated with this video?

[@joseanmartinez]

Yep!

[@adicide9070]

a fork of null-ls is doing fine now, so stay with that.

[@driden1987]

I needed to update over from null-ls. _Sad_

[@joseanmartinez]

Yeah same, kinda sad null-ls was archived. Hopefully this solution works well for you.

[@driden1987]

@@joseanmartinezI recently started a new University project and could swear my linting was working fine. It was not, I'm under a ton of errors right now heheh. Thanks again, love your vids, love who you go through everything, keep it up, you're doing great

[@daephx]

are-chived

[@JoshPeterson]

*ar-kived, not ar-chived