Update to new recipe system (S++ 2.0).

recipes/magic_enum/recipe.py

@@ -1,10 +1,19 @@
 
-import os
+import re
 from SCons.Script import *
 
-def cook(env: Environment, git_ref: str = "master") -> dict:
-    repo = env.GitBranch(repo_name = 'magic_enum', remote_url = 'https://github.com/Neargye/magic_enum.git', git_ref = git_ref)
+def _git_cook(env: Environment, repo: dict) -> dict:
     checkout_root = repo['checkout_root']
     return {
         'CPPPATH': [os.path.join(checkout_root, 'include')]
     }
+
+
+env.GitRecipe(
+    globals = globals(),
+    repo_name = 'magic_enum',
+    repo_url = 'https://github.com/Neargye/magic_enum.git',
+    tag_pattern = re.compile(r'^v([0-9]+)\.([0-9]+)\.([0-9]+)$'),
+    tag_fn = lambda version: f'v{version[0]}.{version[1]}.{version[2]}',
+    cook_fn = _git_cook
+)