Source code for conda_pypi.installer

"""
Install a wheel / install a conda.
"""

import os
import subprocess
import sys
import sysconfig
import tempfile
from pathlib import Path
from unittest.mock import patch

from conda.cli.main import main_subshell
from conda.core.package_cache_data import PackageCacheData
from installer import install
from installer.destinations import SchemeDictionaryDestination
from installer.sources import WheelFile




def install_installer(python_executable: str, whl: Path, build_path: Path):
    # Handler for installation directories and writing into them.
    destination = SchemeDictionaryDestination(
        sysconfig.get_paths(),
        interpreter=sys.executable,
        script_kind="posix",
    )

    with WheelFile.open(whl) as source:
        install(
            source=source,
            destination=destination,
            # Additional metadata that is generated by the installation tool.
            additional_metadata={
                "INSTALLER": b"amazing-installer 0.1.0",
            },
        )





def install_pip(python_executable: str, whl: Path, build_path: Path):
    command = [
        python_executable,
        "-m",
        "pip",
        "install",
        "--no-deps",
        "--target",
        str(build_path / "site-packages"),
        whl,
    ]
    subprocess.run(command, check=True)
    print("Installed to", build_path)





def install_ephemeral_conda(prefix: Path, package: Path):
    """
    Install [editable] conda package without adding it to the environment's
    package cache, since we don't want to accidentally re-install "a link to a
    source checkout" elsewhere.

    Installing packages directly from a file does not resolve dependencies.
    Should we automatically install the project's dependencies also?
    """
    persistent_pkgs = PackageCacheData.first_writable().pkgs_dir
    with (
        tempfile.TemporaryDirectory(dir=persistent_pkgs, prefix="ephemeral") as cache_dir,
        patch.dict(os.environ, {"CONDA_PKGS_DIRS": cache_dir}),
    ):
        main_subshell("install", "--prefix", str(prefix), str(package))