neovim: Add ccls

users/simon/modules/neovim/default.nix

@@ -45,6 +45,7 @@ in
     extraPackages = with pkgs; [
       unzip # zip.vim
     ] ++ (lib.optionals nixosConfig.sbruder.full [
+      ccls
       gopls
       haskell-language-server
       jdt-language-server

users/simon/modules/neovim/init.lua

@@ -79,7 +79,7 @@ associate_filetype('*.vpy', 'python') -- vapoursynth scripts
 
 setup_filetype('bib', 1)
 setup_filetype('c', 4)
-setup_filetype('cpp', 4)
+setup_filetype('cpp', 2)
 setup_filetype('dockerfile', 4)
 setup_filetype('gitcommit', nil, 'colorcolumn=72')
 setup_filetype('go', 4, 'noexpandtab')
@@ -279,6 +279,18 @@ local on_attach = function(client, bufnr)
     vim.keymap.set('n', '<a-p>', function() require("illuminate").next_reference{reverse=true,wrap=true} end, opts)
 end
 
+lsp.ccls.setup {
+    on_attach = on_attach,
+    init_options = {
+        compilationDatabaseDirectory = 'build';
+        index = {
+            threads = 0;
+        };
+        clang = {
+            excludeArgs = {'-frounding-math'};
+        };
+    }
+}
 lsp.gopls.setup {
     on_attach = on_attach,
 }