diff --git a/darwin/homebrew.nix b/darwin/homebrew.nix
index f3c5132..b99cb07 100644
--- a/darwin/homebrew.nix
+++ b/darwin/homebrew.nix
@@ -59,6 +59,11 @@
     positron = mkEnableOption "Enable positron";
     claude = mkEnableOption "Enable claude";
     iterm2 = mkEnableOption "Enable iterm2";
+    cmake = mkEnableOption "Enable cmake";
+    ninja = mkEnableOption "Enable ninja";
+    clang-format = mkEnableOption "Enable clang-format";
+    marta = mkEnableOption "Enable marta";
+    valgrind = mkEnableOption "Enable valgrind";
   };
 
   config = lib.mkMerge [
@@ -74,9 +79,10 @@
             "homebrew/homebrew-createzap" = inputs.homebrew-createzap;
             "d12frosted/homebrew-emacs-plus" = inputs.homebrew-emacs-plus;
             "brewsci/homebrew-bio" = inputs.homebrew-brewsci-bio;
+            # "LouisBrunner/valgrind" = inputs.homebrew-valgrind;
           }
         ];
-        mutableTaps = false;
+        mutableTaps = false; # true to enable valgrind
       };
       homebrew = {
         enable = true;
@@ -342,5 +348,33 @@
         "iterm2"
       ];
     })
+    (lib.mkIf config.custom.brew.cmake {
+      homebrew.brews = [
+        "cmake"
+      ];
+    })
+    (lib.mkIf config.custom.brew.ninja {
+      homebrew.brews = [
+        "ninja"
+      ];
+    })
+    (lib.mkIf config.custom.brew.clang-format {
+      homebrew.brews = [
+        "clang-format"
+      ];
+    })
+    (lib.mkIf config.custom.brew.marta {
+      homebrew.casks = [
+        "marta"
+      ];
+    })
+    (lib.mkIf config.custom.brew.valgrind {
+      # homebrew.brews = [
+      #   {
+      #     name = "LouisBrunner/valgrind/valgrind";
+      #     args = ["HEAD"];
+      #   }
+      # ];
+    })
   ];
 }
diff --git a/flake.lock b/flake.lock
index e897791..d96e751 100644
--- a/flake.lock
+++ b/flake.lock
@@ -325,6 +325,22 @@
         "type": "github"
       }
     },
+    "homebrew-valgrind": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1760528864,
+        "narHash": "sha256-l7na1829ushhmKXJi7OicmGlTHdvI+N3MVinY6RQe9w=",
+        "owner": "LouisBrunner",
+        "repo": "homebrew-valgrind",
+        "rev": "c646928f7890281e8d253de193a246dee18d40c5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "LouisBrunner",
+        "repo": "homebrew-valgrind",
+        "type": "github"
+      }
+    },
     "mac-app-util": {
       "inputs": {
         "cl-nix-lite": "cl-nix-lite",
@@ -542,6 +558,7 @@
         "homebrew-core": "homebrew-core",
         "homebrew-createzap": "homebrew-createzap",
         "homebrew-emacs-plus": "homebrew-emacs-plus",
+        "homebrew-valgrind": "homebrew-valgrind",
         "mac-app-util": "mac-app-util",
         "nix-darwin": "nix-darwin",
         "nix-homebrew": "nix-homebrew",
diff --git a/flake.nix b/flake.nix
index 9696e5b..09e98e0 100644
--- a/flake.nix
+++ b/flake.nix
@@ -38,6 +38,8 @@
     homebrew-emacs-plus.flake = false;
     homebrew-brewsci-bio.url = "github:brewsci/homebrew-bio";
     homebrew-brewsci-bio.flake = false;
+    homebrew-valgrind.url = "github:LouisBrunner/homebrew-valgrind";
+    homebrew-valgrind.flake = false;
   };
 
   outputs =
diff --git a/home/emacs/config/lib/naysayer-light-theme.el b/home/emacs/config/lib/naysayer-light-theme.el
new file mode 100644
index 0000000..a7008f5
--- /dev/null
+++ b/home/emacs/config/lib/naysayer-light-theme.el
@@ -0,0 +1,192 @@
+;;; naysayer-light-theme.el --- The naysayer light color theme
+
+;; Author: Nick Aversano <nickav@users.noreply.github.com>
+;; Version: 0.33
+;; Filename: naysayer-light-theme.el
+;; Package-Requires: ((emacs "24"))
+;; URL: https://github.com/nickav/naysayer-theme.el
+;; License: GPL-3+
+
+;;; Commentary:
+
+;; Light version of the naysayer theme. Bright color scheme with warm tones.
+
+;;; Code:
+
+(unless (>= emacs-major-version 24)
+  (error "The naysayer theme requires Emacs 24 or later!"))
+
+(deftheme naysayer-light "The naysayer light color theme")
+
+;; Monokai colors
+(defcustom naysayer-theme-yellow "#E6DB74" "Primary colors - yellow" :type 'string :group 'monokai)
+(defcustom naysayer-theme-orange "#FD971F" "Primary colors - orange" :type 'string :group 'monokai)
+(defcustom naysayer-theme-red "#F92672" "Primary colors - red" :type 'string :group 'monokai)
+(defcustom naysayer-theme-magenta "#FD5FF0" "Primary colors - magenta" :type 'string :group 'monokai)
+(defcustom naysayer-theme-blue "#66D9EF" "Primary colors - blue" :type 'string :group 'monokai)
+(defcustom naysayer-theme-green "#A6E22E" "Primary colors - green" :type 'string :group 'monokai)
+(defcustom naysayer-theme-cyan "#A1EFE4" "Primary colors - cyan" :type 'string :group 'monokai)
+(defcustom naysayer-theme-violet "#AE81FF" "Primary colors - violet" :type 'string :group 'monokai)
+
+(let ((background "#fafaf5")
+      (gutters    "#fafaf5")
+      (gutter-fg  "#8b7355")
+      (gutters-active "#f0f0e8")
+      (builtin      "#003030")
+      (selection  "#c8e8c8")
+      (text       "#5a4a3a")
+      (comments   "#18a010")
+      (punctuation "#18a010")
+      (keywords "#B05A00")
+      (variables "#5a4a3a")
+      (functions "#000000")
+      (methods    "#000000")
+      (strings    "#0c7060")
+      (constants "#003030")
+      (macros "#18a010")
+      (numbers "#003030")
+      (white     "#000000")
+      (error "#c05040")
+      (warning "#c05040")
+      (highlight-line "#e8f4e8")
+      (line-fg "#70a070")
+      (modeline-bg "#18a010")
+      (modeline-fg "#fafaf5"))
+
+  (custom-theme-set-faces
+   'naysayer-light
+
+   ;; Default colors
+   ;; *****************************************************************************
+
+   `(default                          ((t (:foreground ,text :background ,background, :weight normal))))
+   `(region                           ((t (:foreground nil :background ,selection))))
+   `(cursor                           ((t (:background ,white                        ))))
+   `(fringe                           ((t (:background ,background   :foreground ,white))))
+   `(linum                            ((t (:background ,background :foreground ,gutter-fg))))
+   `(highlight ((t (:foreground nil :background ,selection))))
+
+   ;; Font lock faces
+   ;; *****************************************************************************
+
+   `(font-lock-keyword-face           ((t (:foreground ,keywords))))
+   `(font-lock-type-face              ((t (:foreground ,punctuation))))
+   `(font-lock-constant-face          ((t (:foreground ,constants))))
+   `(font-lock-variable-name-face     ((t (:foreground ,variables))))
+   `(font-lock-builtin-face           ((t (:foreground ,builtin))))
+   `(font-lock-string-face            ((t (:foreground ,strings))))
+   `(font-lock-comment-face           ((t (:foreground ,comments))))
+   `(font-lock-comment-delimiter-face ((t (:foreground ,comments))))
+   `(font-lock-doc-face               ((t (:foreground ,comments))))
+   `(font-lock-function-name-face     ((t (:foreground ,functions))))
+   `(font-lock-doc-string-face        ((t (:foreground ,strings))))
+   `(font-lock-preprocessor-face      ((t (:foreground ,macros))))
+   `(font-lock-warning-face           ((t (:foreground ,warning))))
+
+   ;; Plugins
+   ;; *****************************************************************************
+   `(trailing-whitespace ((t (:foreground nil :background ,warning))))
+   `(whitespace-trailing ((t (:background nil :foreground ,warning :inverse-video t))))
+
+   `(linum ((t (:foreground ,line-fg :background ,background))))
+   `(linum-relative-current-face ((t (:foreground ,white :background ,background))))
+   `(line-number ((t (:foreground ,line-fg :background ,background))))
+   `(line-number-current-line ((t (:foreground ,white :background ,background))))
+
+   ;; hl-line-mode
+   `(hl-line ((t (:background ,highlight-line))))
+   `(hl-line-face ((t (:background ,highlight-line))))
+
+   ;; rainbow-delimiters
+   `(rainbow-delimiters-depth-1-face ((t (:foreground ,naysayer-theme-violet))))
+   `(rainbow-delimiters-depth-2-face ((t (:foreground ,naysayer-theme-blue))))
+   `(rainbow-delimiters-depth-3-face ((t (:foreground ,naysayer-theme-green))))
+   `(rainbow-delimiters-depth-4-face ((t (:foreground ,naysayer-theme-yellow))))
+   `(rainbow-delimiters-depth-5-face ((t (:foreground ,naysayer-theme-orange))))
+   `(rainbow-delimiters-depth-6-face ((t (:foreground ,naysayer-theme-red))))
+   `(rainbow-delimiters-depth-7-face ((t (:foreground ,naysayer-theme-violet))))
+   `(rainbow-delimiters-depth-8-face ((t (:foreground ,naysayer-theme-blue))))
+   `(rainbow-delimiters-depth-9-face ((t (:foreground ,naysayer-theme-green))))
+   `(rainbow-delimiters-depth-10-face ((t (:foreground ,naysayer-theme-yellow))))
+   `(rainbow-delimiters-depth-11-face ((t (:foreground ,naysayer-theme-orange))))
+   `(rainbow-delimiters-depth-12-face ((t (:foreground ,naysayer-theme-red))))
+
+   ;; which-func
+   `(which-func ((t (:inverse-video unspecified
+                                    :underline unspecified
+                                    :foreground ,background
+                                    :weight bold
+                                    :box nil))))
+
+   ;; mode-line and powerline
+   `(mode-line-buffer-id ((t (:foreground ,modeline-fg :distant-foreground ,modeline-bg :text ,modeline-fg :weight bold))))
+   `(mode-line ((t (:inverse-video unspecified
+                                   :underline unspecified
+                                   :foreground ,modeline-fg
+                                   :background ,modeline-bg
+                                   :box nil))))
+   `(powerline-active1 ((t (:background ,modeline-bg :foreground ,modeline-fg))))
+   `(powerline-active2 ((t (:background ,modeline-bg :foreground ,modeline-fg))))
+
+   `(mode-line-inactive ((t (:inverse-video unspecified
+                                            :underline unspecified
+                                            :foreground ,text
+                                            :background ,background
+                                            :box nil))))
+   `(powerline-inactive1 ((t (:background ,background :foreground ,text))))
+   `(powerline-inactive2 ((t (:background ,background :foreground ,text))))
+
+    ;; better compatibility with default DOOM mode-line
+   `(error ((t (:foreground nil :weight normal))))
+   `(doom-modeline-project-dir ((t (:foreground nil :weight bold))))
+   
+   ;; js2-mode
+   `(js2-function-call ((t (:inherit (font-lock-function-name-face)))))
+   `(js2-function-param ((t (:foreground ,text))))
+   `(js2-jsdoc-tag ((t (:foreground ,keywords))))
+   `(js2-jsdoc-type ((t (:foreground ,constants))))
+   `(js2-jsdoc-value((t (:foreground ,text))))
+   `(js2-object-property ((t (:foreground ,text))))
+   `(js2-external-variable ((t (:foreground ,constants))))
+   `(js2-error ((t (:foreground ,error))))
+   `(js2-warning ((t (:foreground ,warning))))
+
+   ;; highlight numbers
+   `(highlight-numbers-number ((t (:foreground ,numbers))))
+
+   ;; tab-bar-mode
+   `(tab-bar ((t (:inherit modeline))))
+   `(tab-bar-tab ((t (:foreground ,modeline-fg :background ,modeline-bg))))
+   `(tab-bar-tab-inactive ((t (:foreground ,text :background ,background))))
+  )
+
+  (custom-theme-set-faces
+   'naysayer-light
+   `(my-elisp-plist-keyword-face ((t (:foreground ,keywords)))))
+
+  (font-lock-add-keywords
+   'emacs-lisp-mode
+   '(("\\(:[a-zA-Z0-9-]+\\)" 1 'my-elisp-plist-keyword-face)))
+
+  (custom-theme-set-variables
+    'naysayer-light
+    '(linum-format " %5i ")
+  )
+)
+
+;;;###autoload
+(when (and (boundp 'custom-theme-load-path) load-file-name)
+  (add-to-list 'custom-theme-load-path
+               (file-name-as-directory (file-name-directory load-file-name))))
+
+;; *****************************************************************************
+
+(provide-theme 'naysayer-light)
+
+;; Local Variables:
+;; no-byte-compile: t
+;; End:
+
+(provide 'naysayer-light-theme)
+
+;;; naysayer-light-theme.el ends here
diff --git a/home/emacs/config/post-init.el b/home/emacs/config/post-init.el
index c655ef0..a82ad88 100644
--- a/home/emacs/config/post-init.el
+++ b/home/emacs/config/post-init.el
@@ -63,6 +63,14 @@
   (load-theme 'naysayer t)
   :load-path rs/lib-dir)
 
+;; (use-package naysayer-light-theme
+;;   :ensure nil
+;;   ;; :defer t
+;;   ;; :elpaca nil
+;;   :config
+;;   (load-theme 'naysayer-light t)
+;;   :load-path rs/lib-dir)
+
 ;; (use-package zenburn-theme
 ;;   :config
 ;;   (load-theme 'zenburn t))
@@ -653,6 +661,10 @@ frame if FRAME is nil, and to 1 if AMT is nil."
           ("w" "Work" agenda ""
            ((org-agenda-files '("work.org")))))))
 
+(use-package wakatime-mode
+  :config
+  (global-wakatime-mode))
+
 ;; (use-package editorconfig
 ;;   :init
 ;;   (setq editorconfig-lisp-use-default-indent t)   ; restores alignment for elisp
diff --git a/home/emacs/config/pre-early-init.el b/home/emacs/config/pre-early-init.el
index c3d247e..4d06fa9 100644
--- a/home/emacs/config/pre-early-init.el
+++ b/home/emacs/config/pre-early-init.el
@@ -31,7 +31,7 @@
 (setenv "LIBRARY_PATH"
 	(mapconcat 'identity
 	 '(
-       "/opt/homebrew/opt/gcc/lib/gcc/14"
-       "/opt/homebrew/opt/libgccjit/lib/gcc/14"
-       "/opt/homebrew/opt/gcc/lib/gcc/14/gcc/aarch64-apple-darwin24/14")
+       "/opt/homebrew/opt/gcc/lib/gcc/15"
+       "/opt/homebrew/opt/libgccjit/lib/gcc/15"
+       "/opt/homebrew/opt/gcc/lib/gcc/15/gcc/aarch64-apple-darwin24/15")
          ":"))
diff --git a/home/latex.nix b/home/latex.nix
index 9778e5a..4937c4e 100644
--- a/home/latex.nix
+++ b/home/latex.nix
@@ -16,6 +16,7 @@
   config = lib.mkIf config.custom.latex.enable {
     home.packages = with pkgs; [
       config.custom.latex.package
+      ghostscript
     ];
   };
 }
diff --git a/hosts/dango/default.nix b/hosts/dango/default.nix
index 1e8bc8b..f8934ca 100644
--- a/hosts/dango/default.nix
+++ b/hosts/dango/default.nix
@@ -63,6 +63,11 @@
       positron = true;
       claude = true;
       iterm2 = true;
+      cmake = true;
+      ninja = true;
+      clang-format = true;
+      marta = true;
+      valgrind = true;
     };
   };