refactor(nvim): clean up directory structure

homeManagerModules/neovim/langs/c-lang/default.nix

@@ -0,0 +1,64 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  inherit (lib) attrValues mkIf;
+  inherit (pkgs.writers) writeYAML;
+
+  cfg = config.programs.neovim;
+in
+  mkIf cfg.enableIde {
+    xdg.configFile."clangd/config.yaml".source = writeYAML "config.yaml" {
+      CompileFlags.Add = ["-D__cpp_concepts=202002L"];
+    };
+
+    programs = {
+      neovim = {
+        extraPackages = attrValues {
+          inherit
+            (pkgs)
+            gcc
+            clang-tools
+            cmake-language-server
+            ;
+        };
+
+        extraLuaConfig =
+          # lua
+          ''
+            vim.api.nvim_create_autocmd('FileType', {
+                pattern = { 'cpp', 'c' },
+                command = 'setlocal ts=4 sw=4 sts=0 expandtab',
+            });
+
+            local lsp = require('lspconfig');
+            local default_capabilities = require('cmp_nvim_lsp').default_capabilities();
+            local clangd_extensions = require('clangd_extensions.inlay_hints');
+
+            lsp.cmake.setup({
+                capabilities = default_capabilities,
+            });
+
+            lsp.clangd.setup({
+                capabilities = default_capabilities,
+
+                handlers = require('lsp-status').extensions.clangd.setup(),
+
+                on_attach = function(_, bufnr)
+                    clangd_extensions.setup_autocmd();
+                    clangd_extensions.set_inlay_hints();
+                end,
+            });
+          '';
+
+        plugins = attrValues {
+          inherit
+            (pkgs.vimPlugins)
+            clangd_extensions-nvim
+            ;
+        };
+      };
+    };
+  }