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

recipes/SDL/recipe.py

@@ -1,10 +1,10 @@
 
-import os
 import platform
+import re
 from SCons.Script import *
 
-def cook(env: Environment, git_ref: str = "main") -> dict:
-    repo = env.GitBranch(repo_name = 'SDL', remote_url = 'https://github.com/libsdl-org/SDL.git', git_ref = git_ref)
+
+def _git_cook(env: Environment, repo: dict) -> dict:
     checkout_root = repo['checkout_root']
     build_result = env.CMakeProject(project_root=checkout_root, generate_args = ['-DSDL_STATIC=ON', '-DSDL_SHARED=OFF'])
     libs = []
@@ -25,3 +25,13 @@ def cook(env: Environment, git_ref: str = "main") -> dict:
         'LIBS': libs
     }
 
+
+env.GitRecipe(
+    globals = globals(),
+    repo_name = 'SDL',
+    repo_url = 'https://github.com/libsdl-org/SDL.git',
+    tag_pattern = re.compile(r'^release-([0-9]+)\.([0-9]+)\.([0-9]+)$'),
+    tag_fn = lambda version: f'release-{version[0]}.{version[1]}.{version[2]}',
+    cook_fn = _git_cook
+)
+