image-customization: load customization-file only once

Load the customization-file per-target and not per-device.

Signed-off-by: David Bauer <[email protected]>

scripts/image_customization_lib.lua

@@ -9,10 +9,6 @@ local function file_exists(file)
 	return true
 end
 
-local function get_customization_file_name(env)
-	return env.GLUON_SITEDIR .. '/image-customization.lua'
-end
-
 local function evaluate_device(env, dev)
 	local selections = {
 		features = {},
@@ -91,11 +87,7 @@ local function evaluate_device(env, dev)
 	end
 
 	-- Evaluate the feature definition files
-	local f, err = loadfile(get_customization_file_name(env))
-	if not f then
-		error('Failed to parse feature definition: ' .. err)
-	end
-	setfenv(f, funcs)
+	setfenv(M.customization_file, funcs)
 	f()
 
 	return {
@@ -110,7 +102,7 @@ function M.get_selections(env, dev)
 		packages = {},
 	}
 
-	if not file_exists(get_customization_file_name(env)) then
+	if not M.customization_file then
 		return return_object
 	end
 
@@ -119,12 +111,28 @@ function M.get_selections(env, dev)
 end
 
 function M.device_overrides(env, dev)
-	if not file_exists(get_customization_file_name(env)) then
+	if not M.customization_file then
 		return {}
 	end
 
 	local eval_result = evaluate_device(env, dev)
 	return eval_result.device_overrides
 end
 
+function M.set_env(env)
+	local file_path = env.GLUON_SITEDIR .. '/image-customization.lua'
+
+	-- Store OS environment
+	M.env = env
+
+	-- Check if the customization-file exists
+	if not file_exists(file_path) then
+		return
+	end
+
+	-- Load the customization-file
+	local file_content, err = loadfile(file_path)
+	M.customization_file = file_content
+end
+
 return M

scripts/target_lib.lua

@@ -22,6 +22,7 @@ assert(env.GLUON_TARGETSDIR)
 assert(env.GLUON_RELEASE)
 assert(env.GLUON_DEPRECATED)
 
+image_customization_lib.set_env(env)
 
 M.site_code = assert(
 	dofile('scripts/site_config.lua')('site.conf').site_code, 'site_code missing in site.conf'