I actually didn’t mark it as the solution! Or, at least, I didn’t mean to. Maybe @groig did that?
ohnoimdead
ohnoimdead
Ah nice! This is super helpful. I’ll see if I can get it working with AstroNvim a bit later tonight. It would be nice to have a canonical (or at least works-out-of-the-box starting point) for Phoenix & Elixir with the AstroNvim config.
1
groig
ohnoimdead
Well no worries either way because, thanks to your help, I got it to work!
For those that want to get this to work today (because this will hopefully become out of date quickly and just work out-of-the-box):
- Install neovim 0.8+, AstroNvim, and the required deps, see GitHub - AstroNvim/AstroNvim: AstroNvim is an aesthetic and feature-rich neovim config that is extensible and easy to use with a great set of plugins · GitHub
- Use LspInstall (type
:LspInstallthen space, tab to autocomplete) to install:elixir-ls,emmet-ls, andtailwindcss-language-server - Use TSInstall (type
:TSInstallthen space, tab to autocomplete) to install:elixir,heex, and optionallyeex - Edit ~/.config/nvim/init.lua and add the following under line 18 which starts with
require("astronvim.utils").conditional_func...
local lspconfig = require("lspconfig")
local capabilities = vim.lsp.protocol.make_client_capabilities()
lspconfig.tailwindcss.setup({
capabilities = capabilities,
filetypes = { "html", "elixir", "eelixir", "heex" },
init_options = {
userLanguages = {
elixir = "html-eex",
eelixir = "html-eex",
heex = "html-eex",
},
},
settings = {
tailwindCSS = {
experimental = {
classRegex = {
'class[:]\\s*"([^"]*)"',
},
},
},
},
})
lspconfig.emmet_ls.setup({
capabilities = capabilities,
filetypes = { "html", "css", "elixir", "eelixir", "heex" },
})
And go to town! My only minor complaint is the lack of color swatches for Tailwind colors. 
However, there’s a few things that are even better than VSCode imo, like the first-class ripgrep support. And, of course, true vim support in everything, including the file explorer. And hell, it looks great!
There is one SUPER STRANGE gotcha, which is that the tailwindcss ls can’t resolve the root directory for Phoenix projects unless it’s in git (there’s a .git folder). So if you don’t see tailwindcss in the status line and lsp says root directory: Not found. for tailwindcss, make sure to run git init. 
Bonus: here’s a screen shot from Pop! OS with the same setup (which is where I’m at most of the time)
8
groig
Awesome!
Take a look here.
The root directory detection is configurable. Try adding this to your tailwind server options, maybe below filetypes:
root_dir = lspconfig.util.root_pattern('tailwind.config.js', 'tailwind.config.ts', 'postcss.config.js', 'postcss.config.ts', 'package.json', 'node_modules', '.git', 'mix.exs'),
4
ohnoimdead
My mind is blown… I can’t even. Seriously.
Also, the better root detection works great! Had no idea that was even a thing.
For a possibly even easier starting point for others: you can use my fork with all of the above config already in: GitHub - treshenry/AstroNvim: AstroNvim is an aesthetic and feature-rich neovim config that is extensible and easy to use with a great set of plugins · GitHub, keeping in mind you will still need to install all the lsp and TS items from steps 2 and 3 above.
I’m now starting to think about how this would all fit together a bit more neatly in AstroNvim itself. Maybe I’ll hit up those folks in an issue. I’m thinking it would be cool if there was something like a rollup config manager where you could just do :configme phoenix and it’ll install the necessary support and drop a good starting config.
4
groig
Sebb
Sebb
Thanks to your thread here I gave it another try.
But I started with kickstart.nvim because Astro and Lunar are just to overwhelming for me.
With kickstart nvim you can just add elixir to the config and everything is installed automagically.
I will post the config when I got all I need working, looking good right now.
1
luxus
here is the creator of the GitHub - AstroNvim/astrocommunity: A community repository of common plugin specifications · GitHub repo, maybe u can add ur work to it? we have a lot of packs
if you need help you can join us at Discord
1