Add config validation hook

content/config/broot/ide.toml.tmpl

@@ -1,7 +1,7 @@
 modal = true
 default_flags = "gh"
 show_selection_mark = true
-{{#if ctx.icons}}
+{{#if cfg.broot.icons}}
 icon_theme = "vscode"
 {{/if}}
 

content/config/wezterm/wezterm.lua.tmpl

@@ -11,7 +11,7 @@ config.font = wezterm.font_with_fallback {
   'Jetbrains Mono',
   'Broot Icons Visual Studio Code',
 }
-config.font_size = {{ctx.font-size}}
+config.font_size = {{cfg.wezterm.font_size}}
 config.color_scheme = 'Dracula'
 config.window_background_gradient = {
     orientation = 'Vertical',

hooks/validate.hook.lua

@@ -0,0 +1,27 @@
+local silo = require 'silo'
+
+local function missing(name)
+  error("config value for `" .. name .. "` is missing")
+end
+
+local function before_apply_all()
+  local cfg = silo.config
+
+  if not cfg.environment then
+    missing('environment')
+  end
+  if not cfg.username then
+    missing('username')
+  end
+  if not cfg.wezterm.font_size then
+    missing('wezterm.font_size')
+  end
+  if not cfg.modules then
+    missing('modules')
+  end
+end
+
+
+return {
+  before_apply_all = before_apply_all
+}

silo.config.lua

@@ -17,6 +17,10 @@ local mod = function(packages)
   }
 end
 
+-- default configurations for software
+config.broot = { icons = false }
+config.wezterm = { font_size = 12 }
+
 -- all software modules / package groups
 config.modules = {
   core = default_mod {
@@ -35,6 +39,13 @@ config.modules = {
     'neofetch',
     'translate-shell',
   },
+  gui = mod {
+    'kdePackages.breeze-icons',
+    'breeze-gtk',
+    'breeze-qt5',
+    'vscode',
+    'insomnia',
+  },
   fonts = default_mod {
     'fontconfig',
     'fira-code-nerdfont',