PyProjectRecipe containing install_in_hostpython, does not install in hostpython

[RobertFlatt]

A PyProjectRecipe with install_in_hostpython = True builds but does not install the package in hostpython. It does install the package for target Python.

Presumably because both of these fragments in recipy.py assume only setup.py, and the pyproject.toml case is not implemented:

https://github.com/kivy/python-for-android/blob/develop/pythonforandroid/recipe.py#L1001-L1007

    def install_hostpython_package(self, arch):
        env = self.get_hostrecipe_env(arch)
        real_hostpython = sh.Command(self.real_hostpython_location)
        shprint(real_hostpython, 'setup.py', 'install', '-O2',
                '--root={}'.format(dirname(self.real_hostpython_location)),
                '--install-lib=Lib/site-packages',
                _env=env, *self.setup_extra_args)

https://github.com/kivy/python-for-android/blob/develop/pythonforandroid/recipe.py#L1056-L1068

    def build_compiled_components(self, arch):
        info('Building compiled components in {}'.format(self.name))

        env = self.get_recipe_env(arch)
        hostpython = sh.Command(self.hostpython_location)
        with current_directory(self.get_build_dir(arch.arch)):
            if self.install_in_hostpython:
                shprint(hostpython, 'setup.py', 'clean', '--all', _env=env)
            shprint(hostpython, 'setup.py', self.build_cmd, '-v',
                    _env=env, *self.setup_extra_args)
            build_dir = glob.glob('build/lib.*')[0]
            shprint(sh.find, build_dir, '-name', '"*.o"', '-exec',
                    env['STRIP'], '{}', ';', _env=env)

The good news is none of the existing recipes with install_in_hostpython = True use PyProjectRecipe.

The issue was discovered while updating the (to be reinstated) cppy recipe.

from pythonforandroid.recipe import PyProjectRecipe


class CppyRecipe(PyProjectRecipe):
    site_packages_name = 'cppy'
    version = '1.3.1'
    url = 'https://github.com/nucleic/cppy/archive/refs/tags/{version}.zip'
    call_hostpython_via_targetpython = False
    # to be detected by the matplotlib install script
    install_in_hostpython = True
    depends = ['setuptools']

    def get_recipe_env(self, arch, **kwargs):
        env = super().get_recipe_env(arch, **kwargs)
        env["SETUPTOOLS_SCM_PRETEND_VERSION_FOR_CPPY"] = self.version
        return env


recipe = CppyRecipe()

The simplest test is :

requirements = python3,kivy,cppy

buildozer android debug

This ls shows cppy installed for android:

ls .buildozer/android/platform/build-arm64-v8a/dists/myapp/_python_bundle__arm64-v8a/_python_bundle/site-packages

but these ls show cppy is not installed for either hostpython:

ls .buildozer/android/platform/build-arm64-v8a/build/other_builds/hostpython3/desktop/hostpython3/native-build/Lib/site-packages
ls .buildozer/android/platform/build-arm64-v8a/build/other_builds/hostpython3/desktop/hostpython3/Lib/site-packages

Build log attached

log.txt

[T-Dynamos]

install_in_hostpython isn't required for PyProjectRecipe you can specify in hostpython_prerequisites.

python-for-android/pythonforandroid/recipe.py

Line 870 in ceed049

hostpython_prerequisites = []

[RobertFlatt]

😎
Works smoothly.
Both the dependency .h and .py are found during the build of atom.

I also tried replacing depends with hostpython_prerequisites on kiwisolver and it worked too (but manual Python.h is still required).