Don't do weird LSP diagnostic stuff. ,,d for show all diags

python.nix

@@ -2,5 +2,16 @@
 {
   home.packages = with pkgs; [
     uv
+    (python3.withPackages (ps: with ps; [
+      python-lsp-server
+      python-lsp-jsonrpc
+      python-lsp-black
+      python-lsp-ruff
+      pyls-isort
+      pyls-flake8
+      flake8
+      isort
+      black
+    ]))
   ];
 }

rcfiles/neovim.lua

@@ -36,51 +36,37 @@ vim.keymap.set('n', '<leader>fb', tbuiltin.buffers, {})
 vim.keymap.set('n', '<leader>fh', tbuiltin.help_tags, {})
 vim.keymap.set('n', '<leader>fs', tbuiltin.spell_suggest, {})
 
--- Mason (tool manager) setup
--- we want rust-analyzer and codelldb
-require("mason").setup({
-  ui = {
-    icons = {
-      package_installed = "✔️",
-      package_pending = "🔄",
-      package_uninstalled = "🌐"
-    }
-  }
-})
-require("mason-lspconfig").setup()
-
 -- General LSP settings
--- from https://rsdlt.github.io/posts/rust-nvim-ide-guide-walkthrough-development-debug/
-local sign = function(opts)
-  vim.fn.sign_define(opts.name, {
-    texthl = opts.name,
-    text = opts.text,
-    numhl = ''
-  })
-end
-
-sign({name = 'DiagnosticSignError', text = '🛑'})
-sign({name = 'DiagnosticSignWarn', text = '⚠️'})
-sign({name = 'DiagnosticSignHint', text = '💭'})
-sign({name = 'DiagnosticSignInfo', text = '🗒️'})
+vim.lsp.enable('pylsp')
 
+-- LSP diagnostic signs
 vim.diagnostic.config({
-    virtual_text = false,
+    virtual_text = true,
     signs = true,
     update_in_insert = true,
     underline = true,
-    severity_sort = false,
-    float = {
-        border = 'rounded',
-        source = 'always',
-        header = '',
-        prefix = '',
+    severity_sort = true,
+    signs = {
+      text = {
+        [vim.diagnostic.severity.ERROR] = "E",
+        [vim.diagnostic.severity.WARN] = "W",
+        [vim.diagnostic.severity.INFO] = "I",
+        [vim.diagnostic.severity.HINT] = "?"
       },
+      numhl = {
+        [vim.diagnostic.severity.ERROR] = "ErrorMsg",
+        [vim.diagnostic.severity.WARN] = "WarningMsg",
+        [vim.diagnostic.severity.INFO] = "DiagnosticInfo",
+        [vim.diagnostic.severity.HINT] = "DiagnosticHint"
+      }
+    }
 })
 
+vim.keymap.set('n', '<leader><leader>d', '<cmd>lua vim.diagnostic.open_float()<CR>', { noremap = true, silent = true })
+
 vim.cmd([[
-set signcolumn=yes
-autocmd CursorHold * lua vim.diagnostic.open_float(nil, { focusable = false })
+  set signcolumn=yes
+  autocmd CursorHold * lua vim.diagnostic.open_float(nil, { focusable = false })
 ]])
 
 -- Rust tools for Rust-specific LSP

vim.nix

@@ -17,9 +17,8 @@
       nvim-treesitter-parsers.toml
       nvim-treesitter-parsers.python
       jedi-vim
-      mason-nvim
-      mason-tool-installer-nvim
-      mason-lspconfig-nvim
+      nvim-lspconfig
+      nvim-lsputils
       fzf-vim
       sleuth
       whitespace-nvim # ,t to trim whitespace