nvim: add ccls (C) lsp

pkgsets/cpp.nix

@@ -1,14 +1,12 @@
 {
-  config,
   pkgs,
   ...
 }:
 {
   config.machine.pkgsets.cpp.pkgs = with pkgs; [
+    bear
     clang
     cmake
     gcc
-    global
-    irony-server
   ];
 }

pkgsets/nvim/lsp/c.nix

@@ -0,0 +1,22 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+
+lib.optionalString (lib.elem "nvim::lsp::c" config.machine.pkgs) # lua
+  ''
+    lspconfig.ccls.setup {
+      cmd = { "${pkgs.ccls}/bin/ccls" },
+      init_options = {
+        compilationDatabaseDirectory = "build";
+        index = {
+          threads = 0;
+        };
+        clang = {
+          excludeArgs = { "-frounding-math"} ;
+        };
+      }
+    }
+  ''