Add python2legacy to constants.py and move python2's broken recipes to python2legacy

We add python2legacy to be able to test the pygame bootstrap with the rebuild_updated_recipes.py script (it will be implemented in following commit), in case that we modify some pygame related recipe. Also we move the python2's broken recipes to python2legacy because all that where detected with python2legacy not with the current python2

Author: opacam

ci/constants.py

@@ -5,12 +5,13 @@ class TargetPython(Enum):
     python2 = 0
     python3crystax = 1
     python3 = 2
+    python2legacy = 3
 
 
 # recipes that currently break the build
 # a recipe could be broken for a target Python and not for the other,
 # hence we're maintaining one list per Python target
-BROKEN_RECIPES_PYTHON2 = set([
+BROKEN_RECIPES_PYTHON2LEGACY = set([
     # pythonhelpers.h:12:18: fatal error: string: No such file or directory
     'atom',
     # https://github.com/kivy/python-for-android/issues/550
@@ -50,7 +51,7 @@ class TargetPython(Enum):
     'omemo',
     # requires `libpq-dev` system dependency e.g. for `pg_config` binary
     'psycopg2',
-    'pygame',
+    # 'pygame',
     # most likely some setup in the Docker container, because it works in host
     'pyjnius', 'pyopenal',
     'pyproj',
@@ -66,6 +67,7 @@ class TargetPython(Enum):
     'zeroconf',
     'zope',
 ])
+# to be created via https://github.com/kivy/python-for-android/issues/1514
 BROKEN_RECIPES_PYTHON3 = set([
     'brokenrecipe',
     # enum34 is not compatible with Python 3.6 standard library
@@ -96,9 +98,13 @@ class TargetPython(Enum):
     'sympy',
     'vlc',
 ])
+# to be created via https://github.com/kivy/python-for-android/issues/XXXX
+BROKEN_RECIPES_PYTHON2 = set([
+])
 
 BROKEN_RECIPES = {
     TargetPython.python2: BROKEN_RECIPES_PYTHON2,
+    TargetPython.python2legacy: BROKEN_RECIPES_PYTHON2LEGACY,
     TargetPython.python3: BROKEN_RECIPES_PYTHON3,
 }
 # recipes that were already built will be skipped