feat(cc): redo c++ configuration with clangd and modularity

config.el

@@ -4,6 +4,7 @@
 (load! "security")
 (load! "core")
 (load! "development/lsp")
+(load! "development/cpp")
 (load! "development/nix")
 (load! "development/misc")
 (load! "org")

development/cpp.el

@@ -0,0 +1,43 @@
+;;; development/cpp.el -*- lexical-binding: t; -*-
+
+;; 4. Optional: Fine-tuning Clangd
+;; These arguments are passed directly to the clangd binary.
+(setq lsp-clients-clangd-args
+      '("-j=4"
+        "--background-index"
+        "--clang-tidy"
+        "--completion-style=detailed"
+        "--header-insertion=never"
+        "--header-insertion-decorators=0"))
+
+(after! lsp-clangd
+  (set-lsp-priority! 'clangd 2)) ; Ensure clangd is preferred over ccls
+
+;; Formatting for c++
+;; This tells Doom to use the LSP server (clangd) for formatting instead of
+;; a separate clang-format call via apheleia.
+(setq-hook! '(c-mode-hook c++-mode-hook) +format-with-lsp t)
+
+;; Formatting as I type
+;; This enables real-time formatting as you type trigger characters like ; or }
+(after! lsp-mode
+  (setq lsp-enable-on-type-formatting t))
+
+;; Ensure cc-mode settings align with clangd/clang-format
+;; While clangd handles most things, basic Emacs indentation settings are
+;; still useful as a fallback or for initial indentation.
+(after! cc-mode
+  (setq-default c-basic-offset 2)
+  (c-add-style "doom-cpp"
+               '("llvm"
+                 (c-basic-offset . 2)
+                 (c-offsets-alist . ((innamespace . 0)
+                                     (access-label . -)
+                                     (arglist-intro . +)
+                                     (arglist-cont-nonempty . +)))))
+  (add-hook! '(c-mode-hook c++-mode-hook)
+    (c-set-style "doom-cpp")))
+
+;; Add C++ documentation support
+(set-docsets! 'c++-mode "C++")
+(set-docsets! 'c-mode "C")

development/flycheck_cpp.el

@@ -0,0 +1,43 @@
+;;; development/cpp.el -*- lexical-binding: t; -*-
+
+;; 4. Optional: Fine-tuning Clangd
+;; These arguments are passed directly to the clangd binary.
+(setq lsp-clients-clangd-args
+      '("-j=4"
+        "--background-index"
+        "--clang-tidy"
+        "--completion-style=detailed"
+        "--header-insertion=never"
+        "--header-insertion-decorators=0"))
+
+(after! lsp-clangd
+  (set-lsp-priority! 'clangd 2)) ; Ensure clangd is preferred over ccls
+
+;; Formatting for c++
+;; This tells Doom to use the LSP server (clangd) for formatting instead of
+;; a separate clang-format call via apheleia.
+(setq-hook! '(c-mode-hook c++-mode-hook) +format-with-lsp t)
+
+;; Formatting as I type
+;; This enables real-time formatting as you type trigger characters like ; or }
+(after! lsp-mode
+  (setq lsp-enable-on-type-formatting t))
+
+;; Ensure cc-mode settings align with clangd/clang-format
+;; While clangd handles most things, basic Emacs indentation settings are
+;; still useful as a fallback or for initial indentation.
+(after! cc-mode
+  (setq-default c-basic-offset 2)
+  (c-add-style "doom-cpp"
+               '("llvm"
+                 (c-basic-offset . 2)
+                 (c-offsets-alist . ((innamespace . 0)
+                                     (access-label . -)
+                                     (arglist-intro . +)
+                                     (arglist-cont-nonempty . +)))))
+  (add-hook! '(c-mode-hook c++-mode-hook)
+    (c-set-style "doom-cpp")))
+
+;; Add C++ documentation support
+(set-docsets! 'c++-mode "C++")
+(set-docsets! 'c-mode "C")

development/lsp.el

@@ -37,14 +37,8 @@
         corfu-annotate-max-width 50)
   )
 
-;; If using LSP, configure to show more details
 (after! lsp-mode
   (setq lsp-completion-show-detail t           ; Show method signatures
         lsp-completion-show-kind t             ; Show completion item kind
         lsp-completion-show-label-description t ; Show more details in label
         ))
-
-(after! lsp-clangd
-  (setq lsp-clients-clangd-executable "clangd")
-  (setq lsp-clients--clangd-default-executable "clangd")
-  (setq lsp-clangd-binary-path "clangd"))

init.el

@@ -115,7 +115,7 @@
        :lang
        ;;agda              ; types of types of types of types...
        ;;beancount         ; mind the GAAP
-       (cc +lsp)         ; C > C++ == 1
+       (cc +lsp +tree-sitter)         ; C > C++ == 1
        ;;clojure           ; java with a lisp
        ;;common-lisp       ; if you've seen one lisp, you've seen them all
        ;;coq               ; proofs-as-programs