@@ -0,0 +1,167 @@
+{
+  pkgs,
+  inputs,
+  ...
+}:
+let
+
+in
+{
+  nixpkgs.overlays = [
+    (final: prev: {
+      theme-sh = prev.theme-sh.overrideAttrs {
+        patchPhase = ''
+          install -Dt custom ${inputs.flexoki}/theme.sh/flexoki-{light,dark}
+          bin/theme.sh -a custom/*
+        '';
+      };
+    })
+  ];
+  home.packages = with pkgs; [
+    theme-sh
+  ];
+
+  xdg.configFile = {
+    "fish.themes/flexoki-light".source = "${inputs.flexoki}/fish/flexoki-light.theme";
+    "fish.themes/flexoki-dark".source = "${inputs.flexoki}/fish/flexoki-dark.theme";
+  };
+
+  programs.fzf.colors = {
+    "fg" = "#B7B5AC";
+    "bg" = "#FFFCF0";
+    "hl" = "#100F0F";
+    "fg+" = "#B7B5AC";
+    "bg+" = "#F2F0E5";
+    "hl+" = "#100F0F";
+    "border" = "#AF3029";
+    "header" = "#100F0F";
+    "gutter" = "#FFFCF0";
+    "spinner" = "#3AA99F";
+    "info" = "#3AA99F";
+    "separator" = "#F2F0E5";
+    "pointer" = "#D0A215";
+    "marker" = "#D14D41";
+    "prompt" = "#D0A215";
+  };
+
+  programs.fish = {
+    shellAliases.theme = "theme.sh";
+
+    loginShellInit = ''
+      if test -e $XDG_CONFIG_HOME/.theme_history
+          theme.sh (theme.sh -l | tail -n1)
+      else
+          theme.sh flexoki-light
+      end
+
+      # Optional
+      # Bind C-o to the last theme.
+      function last_theme
+          theme.sh (theme.sh -l | tail -n2 | head -n1)
+      end
+
+      bind \co last_theme
+    '';
+  };
+
+  programs.vivid.activeTheme = "gruvbox-light"; # TODO add flexoki
+
+  programs.nixvim = {
+    extraPlugins = [
+      (pkgs.vimUtils.buildVimPlugin {
+        name = "flexoki-neovim";
+        src = pkgs.fetchFromGitHub {
+          owner = "kepano";
+          repo = "flexoki-neovim";
+          rev = "c3e2251e813d29d885a7cbbe9808a7af234d845d";
+          hash = "sha256-TlBP99MBAT/H0Uut1MF8SnIDoeetcdHLKrWal2oO2Ug=";
+        };
+      })
+    ];
+    extraConfigVim = ''
+      set notermguicolors
+      colorscheme flexoki-light
+      highlight Search ctermfg=0
+    '';
+
+    colorschemes = {
+      melange.enable = true;
+    };
+  };
+
+  programs.zed-editor = {
+    extensions = [ "flexoki-themes" ];
+    userSettings.theme = {
+      light = "Flexoki Light";
+      dark = "Flexoki Dark";
+    };
+  };
+
+  programs.emacs =
+    let
+      pname = "flexoki-themes";
+      light-mode-theme = "flexoki-themes-light";
+      dark-mode-theme = "flexoki-themes-dark";
+      config = ''
+        ;; (flexoki-themes-use-bold-keywords t)
+        ;; (flexoki-themes-use-bold-builtins t)
+        ;; (flexoki-themes-use-italic-comments t)
+      '';
+    in
+    {
+      extraPackages = epkgs: [
+        epkgs.${pname}
+      ];
+
+      extraConfig = ''
+        (use-package ${pname}
+          :if (or (daemonp)
+                  window-system)
+          :config (progn ${config}))
+
+        (let ((light-mode-theme '${light-mode-theme})
+              (dark-mode-theme '${dark-mode-theme}))
+          (load-theme light-mode-theme :noconfirm :noenable)
+          (load-theme dark-mode-theme :noconfirm :noenable)
+
+          (defun my/switch-theme-variant (mode)
+            (interactive (list
+                          (intern (completing-read "Make it: " '("light" "dark") nil t))))
+            (cond
+             ((eq mode 'dark)
+              (disable-theme light-mode-theme)
+              (enable-theme dark-mode-theme))
+             ((eq mode 'light)
+              (disable-theme dark-mode-theme)
+              (enable-theme light-mode-theme)))
+            (modify-all-frames-parameters `((ns-appearance ,mode))))
+
+          (defun my/system-appearance ()
+            (if (and (eq system-type 'darwin)
+                     (string-equal
+                      "Dark"
+                      (string-trim-right (shell-command-to-string "defaults read -g AppleInterfaceStyle"))))
+                'dark
+              'light))
+
+          (defun my/match-theme-system-appearance ()
+            (interactive)
+            (my/switch-theme-variant (my/system-appearance)))
+
+          (my/switch-theme-variant (my/system-appearance))
+
+          (use-package kqueue
+            :if (eq window-system 'ns)
+            :config (progn
+                      (defun my/gp-notify-callback (event)
+                        (let* ((filename (elt event 2))
+                               (basename (file-name-nondirectory filename)))
+                          (when (string-equal basename ".GlobalPreferences.plist")
+                            (my/match-theme-system-appearance))))
+                      (setq my/kq-watcher-global-preferences
+                            (kqueue-add-watch (expand-file-name "~/Library/Preferences/")
+                                              '(write)
+                                              #'my/gp-notify-callback)))))
+      '';
+    };
+}