From ec53f123399c933f02c9d2a477e15915b7025d62 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Thu, 18 Nov 2021 20:32:42 +0100
Subject: nvim: trouble and null ls

---
 nvim/lua/lsp_conf.lua | 50 ++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 46 insertions(+), 4 deletions(-)

(limited to 'nvim/lua/lsp_conf.lua')

diff --git a/nvim/lua/lsp_conf.lua b/nvim/lua/lsp_conf.lua
index a63b761..ba574d6 100644
--- a/nvim/lua/lsp_conf.lua
+++ b/nvim/lua/lsp_conf.lua
@@ -1,5 +1,18 @@
 local nvim_lsp = require('lspconfig')
 local coq = require('coq')
+local null_ls = require("null-ls")
+local trouble = require("trouble")
+
+-- Redefine sign.
+local signs = { Error = ' ', Warning = ' ', Hint = ' ', Information = ' ' }
+
+for type, icon in pairs(signs) do
+  local hl = 'LspDiagnosticsSign' .. type
+  vim.fn.sign_define(hl, { text = icon, texthl = hl, numhl = '' })
+end
+
+local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
+local opts = { noremap=true, silent=true }
 
 local on_attach = function(client, bufnr)
   local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
@@ -12,18 +25,31 @@ local on_attach = function(client, bufnr)
   buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
   buf_set_keymap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
   buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
-  buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
   buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
   buf_set_keymap('n', '<space>e', '<cmd>lua vim.lsp.diagnostic.show_line_diagnostics()<CR>', opts)
-  buf_set_keymap('n', '[d', '<cmd>lua vim.lsp.diagnostic.goto_prev()<CR>', opts)
-  buf_set_keymap('n', ']d', '<cmd>lua vim.lsp.diagnostic.goto_next()<CR>', opts)
 end
 
+null_ls.config({
+    debug = false,
+    sources = {
+        -- Python
+        null_ls.builtins.formatting.black,
+        null_ls.builtins.formatting.isort,
+        null_ls.builtins.diagnostics.flake8,
+        -- Rust
+        null_ls.builtins.formatting.rustfmt,
+        -- C
+        null_ls.builtins.formatting.clang_format,
+        -- JS/TS
+        null_ls.builtins.formatting.prettier,
+    }
+})
+
 -- Setup lspconfig. 
  
 --- Use a loop to conveniently call 'setup' on multiple servers and
 -- map buffer local keybindings when the language server attaches
-local servers = { 'jedi_language_server', 'rust_analyzer', 'tsserver', 'clangd' }
+local servers = { 'pyright', 'rust_analyzer', 'tsserver', 'clangd' }
 for _, lsp in ipairs(servers) do
   nvim_lsp[lsp].setup {
     capabilities = coq.lsp_ensure_capabilities(),
@@ -33,3 +59,19 @@ for _, lsp in ipairs(servers) do
     }
   }
 end
+
+nvim_lsp["null-ls"].setup({
+    on_attach =  function(client, bufnr)
+        -- Format on save.
+        if client.resolved_capabilities.document_formatting then
+            buf_set_keymap('n', '<leader>fs', '<cmd>lua vim.lsp.buf.formatting_sync()<cr>', opts)
+            vim.cmd 'autocmd BufWritePre <buffer> lua vim.lsp.buf.formatting_seq_sync()'
+        end
+    end
+})
+
+trouble.setup({
+    use_lsp_diagnostic_signs = true,
+    auto_close = true,
+    auto_open = true
+})
-- 
cgit v1.2.3-18-g5258