recipes: Introduce RustCompiledComponentsRecipe, add pydantic-core and update cryptography

Makefile

@@ -23,8 +23,12 @@ virtualenv: $(VIRTUAL_ENV)
 test:
 	$(TOX) -- tests/ --ignore tests/test_pythonpackage.py
 
+# Also install and configure rust
 rebuild_updated_recipes: virtualenv
 	. $(ACTIVATE) && \
+	curl https://sh.rustup.rs -sSf | sh -s -- -y && \
+	. "$(HOME)/.cargo/env" && \
+	rustup target list && \
 	ANDROID_SDK_HOME=$(ANDROID_SDK_HOME) ANDROID_NDK_HOME=$(ANDROID_NDK_HOME) \
 	$(PYTHON) ci/rebuild_updated_recipes.py $(REBUILD_UPDATED_RECIPES_EXTRA_ARGS)
 

pythonforandroid/recipe.py

@@ -1,4 +1,4 @@
-from os.path import basename, dirname, exists, isdir, isfile, join, realpath, split
+from os.path import basename, dirname, exists, isdir, isfile, join, realpath, split, sep
 import glob
 
 import hashlib
@@ -7,6 +7,7 @@
 import sh
 import shutil
 import fnmatch
+import zipfile
 import urllib.request
 from urllib.request import urlretrieve
 from os import listdir, unlink, environ, curdir, walk
@@ -20,7 +21,7 @@
 import packaging.version
 
 from pythonforandroid.logger import (
-    logger, info, warning, debug, shprint, info_main)
+    logger, info, warning, debug, shprint, info_main, error)
 from pythonforandroid.util import (
     current_directory, ensure_dir, BuildInterruptingException, rmdir, move,
     touch)
@@ -175,6 +176,7 @@ def download_file(self, url, target, cwd=None):
         """
         if not url:
             return
+
         info('Downloading {} from {}'.format(self.name, url))
 
         if cwd:
@@ -458,7 +460,6 @@ def unpack(self, arch):
                             # apparently happens sometimes with
                             # github zips
                             pass
-                        import zipfile
                         fileh = zipfile.ZipFile(extraction_filename, 'r')
                         root_directory = fileh.filelist[0].filename.split('/')[0]
                         if root_directory != basename(directory_name):
@@ -837,6 +838,9 @@ class PythonRecipe(Recipe):
                  on python2 or python3 which can break the dependency graph
     '''
 
+    hostpython_prerequisites = []
+    '''List of hostpython packages required to build a recipe'''
+
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
@@ -930,6 +934,7 @@ def should_build(self, arch):
     def build_arch(self, arch):
         '''Install the Python module by calling setup.py install with
         the target Python dir.'''
+        self.install_hostpython_prerequisites()
         super().build_arch(arch)
         self.install_python_package(arch)
 
@@ -958,9 +963,13 @@ def install_python_package(self, arch, name=None, env=None, is_dir=True):
 
     def get_hostrecipe_env(self, arch):
         env = environ.copy()
-        env['PYTHONPATH'] = join(dirname(self.real_hostpython_location), 'Lib', 'site-packages')
+        env['PYTHONPATH'] = self.hostpython_site_dir
         return env
 
+    @property
+    def hostpython_site_dir(self):
+        return join(dirname(self.real_hostpython_location), 'Lib', 'site-packages')
+
     def install_hostpython_package(self, arch):
         env = self.get_hostrecipe_env(arch)
         real_hostpython = sh.Command(self.real_hostpython_location)
@@ -969,6 +978,27 @@ def install_hostpython_package(self, arch):
                 '--install-lib=Lib/site-packages',
                 _env=env, *self.setup_extra_args)
 
+    @property
+    def python_version(self):
+        return Recipe.get_recipe("python3", self.ctx).version
+
+    def install_hostpython_prerequisites(self, force_upgrade=True):
+        if len(self.hostpython_prerequisites) == 0:
+            return
+        pip_options = [
+            "install",
+            *self.hostpython_prerequisites,
+            "--target", self.hostpython_site_dir, "--python-version",
+            self.python_version,
+            # Don't use sources, instead wheels
+            "--only-binary=:all:",
+            "--no-deps"
+        ]
+        if force_upgrade:
+            pip_options.append("--upgrade")
+        # Use system's pip
+        shprint(sh.pip, *pip_options)
+
 
 class CompiledComponentsPythonRecipe(PythonRecipe):
     pre_build_ext = False
@@ -1127,6 +1157,144 @@ def get_recipe_env(self, arch, with_flags_in_cc=True):
         return env
 
 
+class RustCompiledComponentsRecipe(PythonRecipe):
+    # Rust toolchain codes
+    # https://doc.rust-lang.org/nightly/rustc/platform-support.html
+    RUST_ARCH_CODES = {
+        "arm64-v8a": "aarch64-linux-android",
+        "armeabi-v7a": "armv7-linux-androideabi",
+        "x86_64": "x86_64-linux-android",
+        "x86": "i686-linux-android",
+    }
+
+    # Build python wheel using `maturin` instead
+    # of default `python -m build [...]`
+    use_maturin = False
+
+    # Directory where to find built wheel
+    # For normal build: "dist/*.whl"
+    # For maturin: "target/wheels/*-linux_*.whl"
+    built_wheel_pattern = None
+
+    call_hostpython_via_targetpython = False
+
+    def __init__(self, *arg, **kwargs):
+        super().__init__(*arg, **kwargs)
+        self.append_deps_if_absent(["python3"])
+        self.set_default_hostpython_deps()
+        if not self.built_wheel_pattern:
+            self.built_wheel_pattern = (
+                "target/wheels/*-linux_*.whl"
+                if self.use_maturin
+                else "dist/*.whl"
+            )
+
+    def set_default_hostpython_deps(self):
+        if not self.use_maturin:
+            self.hostpython_prerequisites += ["build", "setuptools_rust", "wheel", "pyproject_hooks"]
+        else:
+            self.hostpython_prerequisites += ["maturin"]
+
+    def append_deps_if_absent(self, deps):
+        for dep in deps:
+            if dep not in self.depends:
+                self.depends.append(dep)
+
+    def get_recipe_env(self, arch):
+        env = super().get_recipe_env(arch)
+
+        # Set rust build target
+        build_target = self.RUST_ARCH_CODES[arch.arch]
+        cargo_linker_name = "CARGO_TARGET_{}_LINKER".format(
+            build_target.upper().replace("-", "_")
+        )
+        env["CARGO_BUILD_TARGET"] = build_target
+        env[cargo_linker_name] = join(
+            self.ctx.ndk.llvm_prebuilt_dir,
+            "bin",
+            "{}{}-clang".format(
+                # NDK's Clang format
+                build_target.replace("7", "7a")
+                if build_target.startswith("armv7")
+                else build_target,
+                self.ctx.ndk_api,
+            ),
+        )
+        realpython_dir = Recipe.get_recipe("python3", self.ctx).get_build_dir(arch.arch)
+
+        env["RUSTFLAGS"] = "-Clink-args=-L{} -L{}".format(
+            self.ctx.get_libs_dir(arch.arch), join(realpython_dir, "android-build")
+        )
+
+        env["PYO3_CROSS_LIB_DIR"] = realpath(glob.glob(join(
+            realpython_dir, "android-build", "build",
+            "lib.linux-*-{}/".format(self.get_python_formatted_version()),
+        ))[0])
+
+        info_main("Ensuring rust build toolchain")
+        shprint(sh.rustup, "target", "add", build_target)
+
+        # Add host python to PATH
+        env["PATH"] = ("{hostpython_dir}:{old_path}").format(
+            hostpython_dir=Recipe.get_recipe(
+                "hostpython3", self.ctx
+            ).get_path_to_python(),
+            old_path=env["PATH"],
+        )
+        return env
+
+    def get_python_formatted_version(self):
+        parsed_version = packaging.version.parse(self.python_version)
+        return f"{parsed_version.major}.{parsed_version.minor}"
+
+    def check_host_deps(self):
+        if not hasattr(sh, "rustup"):
+            error(
+                "`rustup` was not found on host system."
+                "Please install it using :"
+                "\n`curl https://sh.rustup.rs -sSf | sh`\n"
+            )
+            exit(1)
+
+    def build_arch(self, arch):
+        self.check_host_deps()
+        self.install_hostpython_prerequisites()
+        build_dir = self.get_build_dir(arch.arch)
+        env = self.get_recipe_env(arch)
+        built_wheel = None
+
+        # Copy the exec with version info
+        hostpython_exec = join(
+            sep,
+            *self.hostpython_location.split(sep)[:-1],
+            "python{}".format(self.get_python_formatted_version()),
+        )
+        shprint(sh.cp, self.hostpython_location, hostpython_exec)
+
+        with current_directory(build_dir):
+            if self.use_maturin:
+                shprint(
+                    sh.Command(join(self.hostpython_site_dir, "bin", "maturin")),
+                    "build", "--interpreter", hostpython_exec, "--skip-auditwheel",
+                    _env=env,
+                )
+            else:
+                shprint(
+                    sh.Command(hostpython_exec),
+                    "-m", "build", "--no-isolation", "--skip-dependency-check", "--wheel",
+                    _env=env,
+                )
+            # Find the built wheel
+            built_wheel = realpath(glob.glob(self.built_wheel_pattern)[0])
+
+        info("Unzipping built wheel '{}'".format(basename(built_wheel)))
+
+        # Unzip .whl file into site-packages
+        with zipfile.ZipFile(built_wheel, "r") as zip_ref:
+            zip_ref.extractall(self.ctx.get_python_install_dir(arch.arch))
+        info("Successfully installed  '{}'".format(basename(built_wheel)))
+
+
 class TargetPythonRecipe(Recipe):
     '''Class for target python recipes. Sets ctx.python_recipe to point to
     itself, so as to know later what kind of Python was built or used.'''

pythonforandroid/recipes/cryptography/__init__.py

@@ -1,21 +1,24 @@
-from pythonforandroid.recipe import CompiledComponentsPythonRecipe, Recipe
+from pythonforandroid.recipe import RustCompiledComponentsRecipe
+from os.path import join
 
 
-class CryptographyRecipe(CompiledComponentsPythonRecipe):
+class CryptographyRecipe(RustCompiledComponentsRecipe):
+
     name = 'cryptography'
-    version = '2.8'
-    url = 'https://github.com/pyca/cryptography/archive/{version}.tar.gz'
+    version = '42.0.1'
+    url = 'https://github.com/pyca/cryptography/archive/refs/tags/{version}.tar.gz'
     depends = ['openssl', 'six', 'setuptools', 'cffi']
-    call_hostpython_via_targetpython = False
+    # recipe built cffi does not work on apple M1
+    hostpython_prerequisites = ["semantic_version", "cffi"]
 
     def get_recipe_env(self, arch):
         env = super().get_recipe_env(arch)
-
-        openssl_recipe = Recipe.get_recipe('openssl', self.ctx)
-        env['CFLAGS'] += openssl_recipe.include_flags(arch)
-        env['LDFLAGS'] += openssl_recipe.link_dirs_flags(arch)
-        env['LIBS'] = openssl_recipe.link_libs_flags()
-
+        openssl_build_dir = self.get_recipe('openssl', self.ctx).get_build_dir(arch.arch)
+        build_target = self.RUST_ARCH_CODES[arch.arch].upper().replace("-", "_")
+        openssl_include = "{}_OPENSSL_INCLUDE_DIR".format(build_target)
+        openssl_libs = "{}_OPENSSL_LIB_DIR".format(build_target)
+        env[openssl_include] = join(openssl_build_dir, 'include')
+        env[openssl_libs] = join(openssl_build_dir)
         return env
 
 

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 +40,18 @@ def get_recipe_env(self, arch=None, with_flags_in_cc=True):
 
         return env
 
+    def build_arch(self, arch):
+        self.hostpython_prerequisites = ["setuptools==59.2.0"]
+        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/pydantic-core/__init__.py

@@ -0,0 +1,12 @@
+from pythonforandroid.recipe import RustCompiledComponentsRecipe
+
+
+class PydanticcoreRecipe(RustCompiledComponentsRecipe):
+    version = "2.16.1"
+    url = "https://github.com/pydantic/pydantic-core/archive/refs/tags/v{version}.tar.gz"
+    use_maturin = True
+    hostpython_prerequisites = ["typing_extensions"]
+    site_packages_name = "pydantic_core"
+
+
+recipe = PydanticcoreRecipe()

pythonforandroid/recipes/setuptools/__init__.py

@@ -2,7 +2,7 @@
 
 
 class SetuptoolsRecipe(PythonRecipe):
-    version = '51.3.3'
+    version = '69.2.0'
     url = 'https://pypi.python.org/packages/source/s/setuptools/setuptools-{version}.tar.gz'
     call_hostpython_via_targetpython = False
     install_in_hostpython = True