Made the initial thing kinda work

.pre-commit-config.yaml

@@ -1,6 +1,11 @@
 repos:
--   repo: https://github.com/psf/black
-    rev: stable
-    hooks:
-    - id: black
-      language_version: python3.6
+- repo: https://github.com/pre-commit/mirrors-isort
+  rev: master
+  hooks:
+  - id: isort
+
+- repo: https://github.com/psf/black
+  rev: stable
+  hooks:
+  - id: black
+    language_version: python3.6

condax/__init__.py

@@ -1 +1 @@
-__version__ = '0.0.1'
+__version__ = "0.0.1"

condax/cli.py

@@ -0,0 +1,17 @@
+import click
+
+from . import core
+
+
+@click.group()
+def cli():
+    pass
+
+@cli.command()
+@click.argument('package')
+def install(package):
+    core.install_package(package)
+
+
+if __name__ == '__main__':
+    cli()

condax/conda.py

@@ -0,0 +1,90 @@
+import logging
+import os
+import platform
+import shutil
+import stat
+import subprocess
+import glob
+import json
+
+import requests
+
+from .config import CONDA_ENV_PREFIX_PATH
+
+
+def ensure_conda():
+    conda_executable = shutil.which("conda")
+    if conda_executable:
+        return conda_executable
+
+    conda_executable = shutil.which("conda.exe")
+    if conda_executable:
+        return conda_executable
+
+    logging.info("No existing conda installation found.  Installing the standalone")
+    return install_conda_exe()
+
+
+def install_conda_exe():
+    conda_exe_prefix = "https://repo.anaconda.com/pkgs/misc/conda-execs"
+    if platform.system() == "Linux":
+        conda_exe_file = "conda-latest-linux-64.exe"
+    elif platform.system() == "Darwin":
+        conda_exe_file = "conda-latest-osx-64.exe"
+    else:
+        raise ValueError(f"Unsupported platform: {platform.system()}")
+
+    resp = requests.get(f"{conda_exe_prefix}/{conda_exe_file}", allow_redirects=True)
+    resp.raise_for_status()
+    target_filename = os.path.expanduser("~/.local/conda.exe")
+    with open(target_filename, "wb") as fo:
+        fo.write(resp.content)
+    st = os.stat(target_filename)
+    os.chmod(target_filename, st.st_mode | stat.S_IXUSR)
+    return target_filename
+
+
+def ensure_dest_prefix():
+    if not os.path.exists(CONDA_ENV_PREFIX_PATH):
+        os.mkdir(CONDA_ENV_PREFIX_PATH)
+
+
+def create_conda_environment(package):
+    conda_exe = ensure_conda()
+
+    subprocess.check_call([
+        conda_exe, 'create', 
+        '--prefix', f'{CONDA_ENV_PREFIX_PATH}/{package}',
+        '--override-channels',
+        # TODO: allow configuring this
+        '--channel', 'conda-forge',
+        '--channel', 'defaults',
+        '--quiet',
+        package
+    ])
+
+
+def detemine_executables_from_env(package):
+    env_prefix = f"{CONDA_ENV_PREFIX_PATH}/{package}"
+
+    for file_name in glob.glob(f"{env_prefix}/conda-meta/{package}*.json"):
+        with open(file_name, 'r') as fo:
+            package_info = json.load(fo)
+            if package_info["name"] == package:
+                potential_executables = [fn for fn in package_info["files"] if fn.startswith('bin/') or fn.startswith('sbin/')]
+                break
+    else:
+        raise ValueError("Could not determine package files")
+
+    executables = []
+    for fn in potential_executables:
+        abs_executable_path = f'{env_prefix}/{fn}'
+        if os.access(abs_executable_path, os.X_OK):
+            executables.append(abs_executable_path)
+
+    return executables
+
+
+
+
+

condax/config.py

@@ -0,0 +1,4 @@
+import os
+
+CONDA_ENV_PREFIX_PATH = os.path.expanduser("~/.condax")
+CONDAX_LINK_DESTINATION = os.path.expanduser("~/.local/bin")

condax/core.py

@@ -0,0 +1,18 @@
+import os
+
+from .config import CONDAX_LINK_DESTINATION
+from .conda import (
+    create_conda_environment,
+    detemine_executables_from_env,
+)
+
+
+def install_package(package):
+    create_conda_environment(package)
+    executables_to_link = detemine_executables_from_env(package)
+    for exe in executables_to_link:
+        executable_name = os.path.basename(exe)
+        os.symlink(exe, f"{CONDAX_LINK_DESTINATION}/{executable_name}")
+
+
+

setup.py

@@ -7,47 +7,49 @@
 
 from setuptools import find_packages, setup
 
-with open('condax/__init__.py', 'r') as f:
+with open("condax/__init__.py", "r") as f:
     for line in f:
-        if line.startswith('__version__'):
-            version = line.strip().split('=')[1].strip(' \'"')
+        if line.startswith("__version__"):
+            version = line.strip().split("=")[1].strip(" '\"")
             break
     else:
-        version = '0.0.1'
+        version = "0.0.1"
 
-with open('README.md', 'r', encoding='utf-8') as f:
+with open("README.md", "r", encoding="utf-8") as f:
     readme = f.read()
 
-REQUIRES = [
-    'click'
-]
+REQUIRES = ["click"]
 
 setup(
-    name='condax',
+    name="condax",
     version=version,
-    description='Install and run applications packaged with conda in isolated environments',
-    long_description= readme,
-    author= 'Marius van Niekerk',
-    author_email= '[email protected]',
-    maintainer= 'Marius van Niekerk',
-    maintainer_email= '[email protected]',
-    url= 'https://github.com/mariusvniekerk/condax',
-    license= 'MIT',
-    classifiers= [
-        'Development Status :: 4 - Beta',
-        'Intended Audience :: Developers',
-        'License :: OSI Approved :: MIT License',
-        'Natural Language :: English',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Programming Language :: Python :: Implementation :: PyPy',
+    description="Install and run applications packaged with conda in isolated environments",
+    long_description=readme,
+    author="Marius van Niekerk",
+    author_email="[email protected]",
+    maintainer="Marius van Niekerk",
+    maintainer_email="[email protected]",
+    url="https://github.com/mariusvniekerk/condax",
+    license="MIT",
+    classifiers=[
+        "Development Status :: 4 - Beta",
+        "Intended Audience :: Developers",
+        "License :: OSI Approved :: MIT License",
+        "Natural Language :: English",
+        "Operating System :: OS Independent",
+        "Programming Language :: Python :: 2.7",
+        "Programming Language :: Python :: 3.5",
+        "Programming Language :: Python :: 3.6",
+        "Programming Language :: Python :: Implementation :: CPython",
+        "Programming Language :: Python :: Implementation :: PyPy",
     ],
     python_requires=">=3.6",
     install_requires=REQUIRES,
-    tests_require=['coverage', 'pytest'],
-    packages=find_packages(exclude=('tests', 'tests.*')),
-
+    tests_require=["coverage", "pytest"],
+    packages=find_packages(exclude=("tests", "tests.*")),
+    entry_points={
+        'console_scipts': [
+            'condax = condax.cli:cli'
+        ]
+    },
 )