recipes: add a few recipes

Author: T-Dynamos

pythonforandroid/recipe.py

@@ -1355,6 +1355,8 @@ class RustCompiledComponentsRecipe(PyProjectRecipe):
         "x86_64": "x86_64-linux-android",
         "x86": "i686-linux-android",
     }
+    # Rust toolchain to be used for building
+    toolchain = "stable"
 
     call_hostpython_via_targetpython = False
 
@@ -1367,6 +1369,7 @@ def get_recipe_env(self, arch, **kwargs):
             build_target.upper().replace("-", "_")
         )
         env["CARGO_BUILD_TARGET"] = build_target
+        env["TARGET"] = build_target
         env[cargo_linker_name] = join(
             self.ctx.ndk.llvm_prebuilt_dir,
             "bin",
@@ -1388,10 +1391,6 @@ def get_recipe_env(self, arch, **kwargs):
             realpython_dir, "android-build", "build",
             "lib.linux-*-{}/".format(self.python_major_minor_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(
@@ -1401,17 +1400,24 @@ def get_recipe_env(self, arch, **kwargs):
         )
         return env
 
+    def ensure_rust_toolchain(self, arch):
+        info_main("Ensuring rust build toolchain : {}".format(self.toolchain))
+        shprint(sh.rustup, "toolchain", "install", self.toolchain)
+        shprint(sh.rustup, "target", "add", "--toolchain", self.toolchain, self.RUST_ARCH_CODES[arch.arch])
+        shprint(sh.rustup, "default", self.toolchain)
+
     def check_host_deps(self):
         if not hasattr(sh, "rustup"):
             error(
-                "`rustup` was not found on host system."
+                "\n`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.ensure_rust_toolchain(arch)
         super().build_arch(arch)
 
 

pythonforandroid/recipes/libpthread/__init__.py

@@ -0,0 +1,51 @@
+from os import makedirs, remove
+from os.path import exists, join
+import sh
+
+from pythonforandroid.recipe import Recipe
+from pythonforandroid.logger import shprint
+
+
+class LibPthread(Recipe):
+    '''
+    This is a dumb recipe. We may need this because some recipes inserted some
+    flags `-lpthread` without our control, case of:
+
+        - :class:`~pythonforandroid.recipes.uvloop.UvloopRecipe`
+
+    .. note:: the libpthread doesn't exist in android but it is integrated into
+        libc, so we create a symbolic link which we will remove when our build
+        finishes'''
+
+    def build_arch(self, arch):
+        libc_path = join(arch.ndk_lib_dir_versioned, 'libc')
+        # Create a temporary folder to add to link path with a fake libpthread.so:
+        fake_libpthread_temp_folder = join(
+            self.get_build_dir(arch.arch),
+            "p4a-libpthread-recipe-tempdir"
+        )
+        if not exists(fake_libpthread_temp_folder):
+            makedirs(fake_libpthread_temp_folder)
+
+        # Set symlinks, and make sure to update them on every build run:
+        if exists(join(fake_libpthread_temp_folder, "libpthread.so")):
+            remove(join(fake_libpthread_temp_folder, "libpthread.so"))
+        shprint(sh.ln, '-sf',
+                libc_path + '.so',
+                join(fake_libpthread_temp_folder, "libpthread.so"),
+                )
+        if exists(join(fake_libpthread_temp_folder, "libpthread.a")):
+            remove(join(fake_libpthread_temp_folder, "libpthread.a"))
+        shprint(sh.ln, '-sf',
+                libc_path + '.a',
+                join(fake_libpthread_temp_folder, "libpthread.a"),
+               )
+
+        # Add folder as -L link option for all recipes if not done yet:
+        if fake_libpthread_temp_folder not in arch.extra_global_link_paths:
+            arch.extra_global_link_paths.append(
+                fake_libpthread_temp_folder
+            )
+
+
+recipe = LibPthread()

pythonforandroid/recipes/polars/__init__.py

@@ -0,0 +1,65 @@
+import time
+from os.path import join
+from glob import glob
+from pythonforandroid.logger import warning
+from pythonforandroid.recipe import RustCompiledComponentsRecipe
+
+WARNING_MSG = """
+
+This build requires at least 6GB of free RAM. If you cannot arrange free RAM, please consider adding some swap memory.
+
+For Linux:
+
+1. Open a terminal and execute the following commands to create an 8GB swap file:
+   sudo fallocate -l 8G /swapfile.swap
+   sudo chmod 700 /swapfile.swap
+   sudo mkswap /swapfile.swap
+   sudo swapon /swapfile.swap
+
+2. To make the swap memory permanent, add it to your system's configuration by executing:
+   sudo sh -c 'echo "/swapfile.swap swap swap defaults 0 0" >> /etc/fstab'
+
+Learn more about swap: https://en.wikipedia.org/wiki/Memory_paging
+"""
+
+
+class PolarsRecipe(RustCompiledComponentsRecipe):
+    version = "0.20.25"
+    url = "https://github.com/pola-rs/polars/releases/download/py-{version}/polars-{version}.tar.gz"
+    toolchain = "nightly-2024-04-15"  # from rust-toolchain.toml
+    need_stl_shared = True
+
+    def get_recipe_env(self, arch, **kwargs):
+        env = super().get_recipe_env(arch, **kwargs)
+        # Required for libz-ng-sys
+        env["CMAKE_TOOLCHAIN_FILE"] = join(
+            self.ctx.ndk_dir, "build", "cmake", "android.toolchain.cmake")
+
+        # Enable SIMD instructions
+        simd_include = glob(join(
+            self.ctx.ndk.llvm_prebuilt_dir,
+            "lib64",
+            "clang",
+            "*",
+            "include"
+        ))[0]
+        env["CFLAGS"] += " -DARM_SIMD -D_MSC_VER -I{}".format(simd_include)
+
+        # Required for libgit2-sys
+        env["CFLAGS"] += " -I{}".format(self.ctx.ndk.sysroot_include_dir)
+        return env
+
+    def build_arch(self, arch):
+        warning(WARNING_MSG)
+        time.sleep(5)  # let user read the warning
+
+        # Polars doesn't officially support 32-bit Python.
+        # See https://github.com/pola-rs/polars/issues/10460
+        if arch.arch in ["x86", "armeabi-v7a"]:
+            warning("Polars does not support architecture: {}".format(arch.arch))
+            return
+        else:
+            super().build_arch(arch)
+
+
+recipe = PolarsRecipe()

pythonforandroid/recipes/pyreqwest_impersonate/__init__.py

@@ -0,0 +1,33 @@
+from pythonforandroid.logger import info
+from pythonforandroid.recipe import RustCompiledComponentsRecipe
+
+
+class Pyreqwest_impersonateRecipe(RustCompiledComponentsRecipe):
+    version = "v0.4.5"
+    url = "https://github.com/deedy5/pyreqwest_impersonate/archive/refs/tags/{version}.tar.gz"
+
+    def get_recipe_env_post(self, arch, **kwargs):
+        env = super().get_recipe_env(arch, **kwargs)
+        env["ANDROID_NDK_HOME"] = self.ctx.ndk.llvm_prebuilt_dir
+        return env
+
+    def get_recipe_env_pre(self, arch, **kwargs):
+        env = super().get_recipe_env(arch, **kwargs)
+        env["ANDROID_NDK_HOME"] = self.ctx.ndk_dir
+        return env
+
+    def build_arch(self, arch):
+        # Why need of two env?
+        # Because there are two dependencies which accepts
+        # different ANDROID_NDK_HOME
+        self.get_recipe_env = self.get_recipe_env_pre
+        prebuild_ = super().build_arch
+        try:
+            prebuild_(arch)
+        except Exception:
+            info("pyreqwest_impersonate first build failed, as expected")
+            self.get_recipe_env = self.get_recipe_env_post
+            prebuild_(arch)
+
+
+recipe = Pyreqwest_impersonateRecipe()

pythonforandroid/recipes/uvloop/__init__.py

@@ -0,0 +1,17 @@
+from pythonforandroid.recipe import PyProjectRecipe
+
+
+class UvloopRecipe(PyProjectRecipe):
+    # 0.19.0
+    version = '6c770dc3fbdd281d15c2ad46588c139696f9269c'
+    url = 'git+https://github.com/MagicStack/uvloop'
+    depends = ['librt', 'libpthread']
+
+    def get_recipe_env(self, arch, **kwargs):
+        env = super().get_recipe_env(arch, **kwargs)
+        env["LIBUV_CONFIGURE_HOST"] = arch.command_prefix
+        env["PLATFORM"] = "android"
+        return env
+
+
+recipe = UvloopRecipe()