numpy: fix build

Author: T-Dynamos

pythonforandroid/recipes/numpy/__init__.py

@@ -1,4 +1,4 @@
-from pythonforandroid.recipe import CompiledComponentsPythonRecipe
+from pythonforandroid.recipe import CompiledComponentsPythonRecipe, Recipe
 from pythonforandroid.logger import shprint, info
 from pythonforandroid.util import current_directory
 from multiprocessing import cpu_count
@@ -13,7 +13,11 @@ class NumpyRecipe(CompiledComponentsPythonRecipe):
     version = '1.22.3'
     url = 'https://pypi.python.org/packages/source/n/numpy/numpy-{version}.zip'
     site_packages_name = 'numpy'
-    depends = ['setuptools', 'cython']
+    depends = ["cython"]
+
+    # This build specifically requires setuptools version 59.2.0
+    hostpython_prerequisites = ["setuptools==59.2.0"]
+
     install_in_hostpython = True
     call_hostpython_via_targetpython = False
 
@@ -36,6 +40,16 @@ def get_recipe_env(self, arch=None, with_flags_in_cc=True):
 
         return env
 
+    def build_arch(self, arch):
+        self.install_hostpython_prerequisites()
+        super().build_arch(arch)
+
+        # Post build step to restore setuptools version
+        self.hostpython_prerequisites = ["setuptools=={}".format(
+            Recipe.get_recipe("setuptools", self.ctx).version)
+        ]
+        self.install_hostpython_prerequisites()
+
     def _build_compiled_components(self, arch):
         info('Building compiled components in {}'.format(self.name))
 

pythonforandroid/recipes/setuptools/__init__.py

@@ -1,11 +1,21 @@
+from os.path import exists, join
+from pythonforandroid.logger import info
 from pythonforandroid.recipe import PythonRecipe
 
 
 class SetuptoolsRecipe(PythonRecipe):
     version = '69.0.3'
-    url = 'https://pypi.python.org/packages/source/s/setuptools/setuptools-{version}.tar.gz'
-    call_hostpython_via_targetpython = False
-    install_in_hostpython = True
+    hostpython_prerequisites = ["setuptools=={}".format(version)]
+
+    def should_build(self, arch):
+        if exists(join(self.hostpython_site_dir, "setuptools")):
+            info('Python package already exists in site-packages')
+            return False
+        info('setuptools apparently isn\'t already in site-packages')
+        return True
+
+    def build_arch(self, arch):
+        self.install_hostpython_prerequisites()
 
 
 recipe = SetuptoolsRecipe()