Update to use just nvim-lspconfig and lsp-inlayhints instead of rust-tools, since it's now unmaintained

nvim/.config/nvim/colors/quietly.vim

@@ -183,6 +183,7 @@ else
   hi CursorIM guifg=#080808 guibg=#afff00 gui=NONE cterm=NONE
   hi ToolbarLine guifg=NONE guibg=#fdfdfd gui=NONE cterm=NONE
   hi ToolbarButton guifg=#080808 guibg=#fdfdfd gui=bold cterm=bold
+  hi LspInlayHint guifg=#A0A0A0 gui=italic cterm=italic
 endif
 
 if s:t_Co >= 256
@@ -309,6 +310,7 @@ if s:t_Co >= 256
     hi CursorIM ctermfg=232 ctermbg=154 cterm=NONE
     hi ToolbarLine ctermfg=NONE ctermbg=188 cterm=NONE
     hi ToolbarButton ctermfg=232 ctermbg=188 cterm=bold
+    hi LspInlayHint guifg=#A0A0A0 gui=italic cterm=italic
   endif
   unlet s:t_Co
   finish
@@ -438,6 +440,7 @@ if s:t_Co >= 16
     hi CursorIM ctermfg=NONE ctermbg=NONE cterm=NONE
     hi ToolbarLine ctermfg=NONE ctermbg=NONE cterm=reverse
     hi ToolbarButton ctermfg=NONE ctermbg=NONE cterm=bold,reverse
+    hi LspInlayHint guifg=#A0A0A0 gui=italic cterm=italic
   endif
   unlet s:t_Co
   finish
@@ -567,6 +570,7 @@ if s:t_Co >= 8
     hi CursorIM ctermfg=NONE ctermbg=NONE cterm=NONE
     hi ToolbarLine ctermfg=NONE ctermbg=NONE cterm=reverse
     hi ToolbarButton ctermfg=NONE ctermbg=NONE cterm=bold,reverse
+    hi LspInlayHint guifg=#A0A0A0 gui=italic cterm=italic
   endif
   unlet s:t_Co
   finish

nvim/.config/nvim/init.vim

@@ -6,8 +6,9 @@ source $HOME/.config/nvim/plugs.vim
 source $HOME/.config/nvim/colors/quietly.vim
 
 "source $HOME/.config/nvim/treesitter.lua
-source $HOME/.config/nvim/rust.lua
+"source $HOME/.config/nvim/rust.lua
 source $HOME/.config/nvim/completion.lua
+source $HOME/.config/nvim/lsp.lua
 
 "syntax off
 filetype plugin indent on

nvim/.config/nvim/lsp.lua

@@ -0,0 +1,54 @@
+-- Setup language servers.
+local lspconfig = require('lspconfig')
+lspconfig.rust_analyzer.setup({})
+
+-- Global mappings.
+-- See `:help vim.diagnostic.*` for documentation on any of the below functions
+vim.keymap.set('n', '<Leader>e', vim.diagnostic.open_float)
+vim.keymap.set('n', '[d', vim.diagnostic.goto_prev)
+vim.keymap.set('n', ']d', vim.diagnostic.goto_next)
+vim.keymap.set('n', '<Leader>q', vim.diagnostic.setloclist)
+
+-- Use LspAttach autocommand to only map the following keys
+-- after the language server attaches to the current buffer
+vim.api.nvim_create_autocmd('LspAttach', {
+  group = vim.api.nvim_create_augroup('UserLspConfig', {}),
+  callback = function(ev)
+    -- Buffer local mappings.
+    -- See `:help vim.lsp.*` for documentation on any of the below functions
+    local opts = { buffer = ev.buf }
+    vim.keymap.set('n', 'gD', vim.lsp.buf.declaration, opts)
+    vim.keymap.set('n', 'gd', vim.lsp.buf.definition, opts)
+    vim.keymap.set('n', 'K', vim.lsp.buf.hover, opts)
+    vim.keymap.set('n', 'gi', vim.lsp.buf.implementation, opts)
+    vim.keymap.set('n', '<C-k>', vim.lsp.buf.signature_help, opts)
+    vim.keymap.set('n', '<Leader>D', vim.lsp.buf.type_definition, opts)
+    vim.keymap.set('n', '<Leader>rn', vim.lsp.buf.rename, opts)
+    vim.keymap.set({ 'n', 'v' }, '<Leader>a', vim.lsp.buf.code_action, opts)
+    vim.keymap.set('n', 'gr', vim.lsp.buf.references, opts)
+    vim.keymap.set('n', '<Leader>f', function()
+      vim.lsp.buf.format { async = true }
+    end, opts)
+  end,
+})
+
+local inlay = require('lsp-inlayhints')
+inlay.setup {
+    enabled_at_startup = true,
+}
+
+-- Configure inlay hints any time the LSP supports them
+vim.api.nvim_create_augroup("LspAttach_inlayhints", {})
+vim.api.nvim_create_autocmd("LspAttach", {
+  group = "LspAttach_inlayhints",
+  callback = function(args)
+    if not (args.data and args.data.client_id) then
+      return
+    end
+
+    local bufnr = args.buf
+    local client = vim.lsp.get_client_by_id(args.data.client_id)
+    require("lsp-inlayhints").on_attach(client, bufnr)
+  end,
+})
+

nvim/.config/nvim/plugs.vim

@@ -16,8 +16,8 @@ Plug 'tpope/vim-obsession'
 Plug 'tpope/vim-fugitive' " whose fault is it
 
 " Language support
-Plug 'nvim-treesitter/nvim-treesitter', { 'do': ':TSUpdate' }
+"Plug 'nvim-treesitter/nvim-treesitter', { 'do': ':TSUpdate' }
-Plug 'rust-lang/rust.vim'
+"Plug 'rust-lang/rust.vim'
 " Plug 'ntietz/tla.vim'
 " Plug 'fatih/vim-go'
 " Plug 'pest-parser/pest.vim'
@@ -39,14 +39,15 @@ Plug 'L3MON4D3/LuaSnip', {'tag': 'v1.*'}
 Plug 'simrat39/rust-tools.nvim'
 
 Plug 'neovim/nvim-lspconfig'
+Plug 'lvimuser/lsp-inlayhints.nvim', { 'branch': 'main' }
 Plug 'nvim-lua/plenary.nvim'
 
 " Nice hovers
 Plug 'stevearc/dressing.nvim'
 
 " Our new AI overlords 🤖
-Plug 'github/copilot.vim', { 'branch': 'release' }
+"Plug 'github/copilot.vim', { 'branch': 'release' }
 " Uncomment this line to disable copilot
-let g:copilot_enabled = 0
+"let g:copilot_enabled = 0
 
 call plug#end()