From a639e4e214c6a4315f36b00dff6231ba933cdfcd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jalil=20David=20Salam=C3=A9=20Messina?=
 <jalil.salame@gmail.com>
Date: Sat, 1 Jun 2024 16:24:05 +0200
Subject: [PATCH] [fix] home: revamp options

Query the system configuration for defaults for the options.
---
 home/default.nix     | 11 +++--------
 home/gui/default.nix | 24 ++++++++++++------------
 home/options.nix     | 37 ++++++++++++++++++++++++++++++-------
 3 files changed, 45 insertions(+), 27 deletions(-)

diff --git a/home/default.nix b/home/default.nix
index 761e808..e4a7994 100644
--- a/home/default.nix
+++ b/home/default.nix
@@ -14,11 +14,7 @@ in {
   imports =
     [
       # Apply overlays
-      {
-        nixpkgs = {
-          inherit overlays;
-        };
-      }
+      {nixpkgs = {inherit overlays;};}
       nvim-config
       ./options.nix
       ./gui
@@ -26,12 +22,11 @@ in {
     ]
     ++ lib.optionals (stylix != null) [
       stylix.homeManagerModules.stylix
-      {
-        stylix.image = cfg.sway.background;
-      }
+      {stylix.image = cfg.sway.background;}
     ];
 
   config = lib.mkMerge [
+    (lib.mkIf (cfg.enable && cfg.styling.enable) {stylix.enable = true;})
     (lib.mkIf cfg.enable {
       programs = {
         # Better cat (bat)
diff --git a/home/gui/default.nix b/home/gui/default.nix
index 5edcb5d..b36d05e 100644
--- a/home/gui/default.nix
+++ b/home/gui/default.nix
@@ -41,7 +41,7 @@ in {
       ++ lib.optional flatpakEnabled flatpak;
     fonts.fontconfig = {
       enable = true;
-      defaultFonts = {
+      defaultFonts = lib.mkIf config.jhome.styling.enable {
         emoji = ["Noto Color Emoji"];
         monospace = ["JetBrains Mono" "Symbols Nerd Font"];
         serif = ["Noto Serif" "Symbols Nerd Font"];
@@ -54,7 +54,7 @@ in {
       # Dynamic Menu
       fuzzel = {
         enable = true;
-        settings.main = {
+        settings.main = lib.mkIf config.jhome.styling.enable {
           icon-theme = "Papirus-Dark";
           inherit (cfg) terminal;
           layer = "overlay";
@@ -69,8 +69,8 @@ in {
       waybar = {
         enable = true;
         systemd.enable = true;
-        settings = import ./waybar-settings.nix {inherit config lib;};
-        style = ''
+        settings = lib.mkIf config.jhome.styling.enable (import ./waybar-settings.nix {inherit config lib;});
+        style = lib.optionalString config.jhome.styling.enable ''
           .modules-left #workspaces button {
             border-bottom: 3px solid @base01;
           }
@@ -82,7 +82,7 @@ in {
       # Terminal
       wezterm = {
         enable = cfg.terminal == "wezterm";
-        extraConfig = ''
+        extraConfig = lib.optionalString config.jhome.styling.enable ''
           config = {}
           config.hide_tab_bar_if_only_one_tab = true
           config.window_padding = { left = 1, right = 1, top = 1, bottom = 1 }
@@ -90,7 +90,7 @@ in {
         '';
       };
       alacritty.enable = cfg.terminal == "alacritty";
-      zellij.enable = cfg.terminal == "alacritty"; # alacritty has no terminal multiplexerr built in
+      zellij.enable = cfg.terminal == "alacritty"; # alacritty has no terminal multiplexer built-in
       # PDF reader
       zathura.enable = true;
       # Auto start sway
@@ -128,26 +128,26 @@ in {
 
     # Window Manager
     wayland.windowManager.sway = {
-      enable = true;
+      inherit (cfg.sway) enable;
       package = swayPkg; # no sway package if it comes from the OS
       config = import ./sway-config.nix {inherit config pkgs;};
     };
 
     # Set cursor style
-    stylix = {inherit cursor;};
-    home.pointerCursor = {
+    stylix = lib.mkIf config.jhome.styling.enable {inherit cursor;};
+    home.pointerCursor = lib.mkIf config.jhome.styling.enable (lib.mkDefault {
       gtk.enable = true;
       inherit (cursor) name package;
-    };
+    });
     # Set Gtk theme
-    gtk = {
+    gtk = lib.mkIf config.jhome.styling.enable {
       enable = true;
       inherit iconTheme;
       gtk3.extraConfig.gtk-application-prefer-dark-theme = 1;
       gtk4.extraConfig.gtk-application-prefer-dark-theme = 1;
     };
     # Set Qt theme
-    qt = {
+    qt = lib.mkIf config.jhome.styling.enable {
       enable = true;
       platformTheme.name = "gtk";
     };
diff --git a/home/options.nix b/home/options.nix
index fe21d7a..03a20de 100644
--- a/home/options.nix
+++ b/home/options.nix
@@ -2,8 +2,20 @@
   lib,
   pkgs,
   ...
-}: let
+} @ attrs: let
+  osConfig = attrs.osConfig or null;
   inherit (lib) types;
+  fromOs = let
+    get = path: set:
+      if path == []
+      then set
+      else get (builtins.tail path) (builtins.getAttr (builtins.head path) set);
+  in
+    path: default:
+      if osConfig == null
+      then default
+      else get path osConfig;
+  fromConfig = path: default: fromOs (["jconfig"] ++ path) default;
 
   mkExtraPackagesOption = name: defaultPkgsPath: let
     text =
@@ -73,13 +85,14 @@
   };
 
   sway.options = {
+    enable = lib.mkEnableOption "sway" // {default = fromConfig ["gui" "sway"] true;};
     background = lib.mkOption {
       description = "The wallpaper to use.";
       type = types.path;
-      default = builtins.fetchurl {
+      default = fromConfig ["styling" "wallpaper"] (builtins.fetchurl {
         url = "https://raw.githubusercontent.com/lunik1/nixos-logo-gruvbox-wallpaper/d4937c424fad79c1136a904599ba689fcf8d0fad/png/gruvbox-dark-rainbow.png";
         sha256 = "036gqhbf6s5ddgvfbgn6iqbzgizssyf7820m5815b2gd748jw8zc";
-      };
+      });
     };
     autostart = lib.mkOption {
       description = ''
@@ -117,7 +130,7 @@
   };
 
   gui.options = {
-    enable = lib.mkEnableOption "GUI applications";
+    enable = lib.mkEnableOption "GUI applications" // {default = fromConfig ["gui" "enable"] false;};
     tempInfo = lib.mkOption {
       description = "Temperature info to display in the statusbar.";
       default = null;
@@ -148,7 +161,7 @@ in {
         hostName = lib.mkOption {
           description = "The hostname of this system.";
           type = types.str;
-          default = "nixos";
+          default = fromOs ["networking" "hostName"] "nixos";
           example = "my pc";
         };
         dev = lib.mkOption {
@@ -156,7 +169,7 @@ in {
           default = {};
           type = types.submodule {
             options = {
-              enable = lib.mkEnableOption "development settings";
+              enable = lib.mkEnableOption "development settings" // {default = fromConfig ["dev" "enable"] false;};
               neovimAsManPager = lib.mkEnableOption "neovim as the man pager";
               extraPackages = mkExtraPackagesOption "dev" [
                 ["jq"] # json parser
@@ -172,7 +185,8 @@ in {
                 type = types.submodule {
                   options.enable = lib.mkEnableOption "rust development settings";
                   options.extraPackages = mkExtraPackagesOption "Rust" [
-                    ["cargo-kcov"] # code coverage
+                    ["cargo-insta"] # snapshot testing
+                    ["cargo-llvm-cov"] # code coverage
                     ["cargo-msrv"] # minimum supported version
                     ["cargo-nextest"] # better testing harness
                     ["cargo-sort"] # sort deps and imports
@@ -193,6 +207,15 @@ in {
           default = {};
           type = types.submodule gui;
         };
+        styling = lib.mkOption {
+          description = "My custom styling (uses stylix)";
+          default = {};
+          type = types.submodule {
+            options = {
+              enable = lib.mkEnableOption "styling" // {default = fromConfig ["styling" "enable"] true;};
+            };
+          };
+        };
       };
     };
   };