mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-16 18:53:17 +00:00
98 lines
3.5 KiB
Python
Executable File
98 lines
3.5 KiB
Python
Executable File
#! /usr/bin/env nix-shell
|
|
#! nix-shell -i python3 -p "python3.withPackages (ps: with ps; [ setuptools ])"
|
|
#
|
|
# This script downloads https://github.com/home-assistant/home-assistant/blob/master/requirements_all.txt.
|
|
# This file contains lines of the form
|
|
#
|
|
# # homeassistant.components.foo
|
|
# # homeassistant.components.bar
|
|
# foobar==1.2.3
|
|
#
|
|
# i.e. it lists dependencies and the components that require them.
|
|
# By parsing the file, a dictionary mapping component to dependencies is created.
|
|
# For all of these dependencies, Nixpkgs' python3Packages are searched for appropriate names.
|
|
# Then, a Nix attribute set mapping component name to dependencies is created.
|
|
|
|
from urllib.request import urlopen
|
|
import subprocess
|
|
import os
|
|
import sys
|
|
import json
|
|
import re
|
|
from pkg_resources import Requirement, RequirementParseError
|
|
|
|
PREFIX = '# homeassistant.components.'
|
|
PKG_SET = 'python3Packages'
|
|
|
|
def get_version():
|
|
with open(os.path.dirname(sys.argv[0]) + '/default.nix') as f:
|
|
m = re.search('hassVersion = "([\\d\\.]+)";', f.read())
|
|
return m.group(1)
|
|
|
|
def fetch_reqs(version='master'):
|
|
requirements = {}
|
|
with urlopen('https://github.com/home-assistant/home-assistant/raw/{}/requirements_all.txt'.format(version)) as response:
|
|
components = []
|
|
for line in response.read().decode().splitlines():
|
|
if line == '':
|
|
components = []
|
|
elif line[:len(PREFIX)] == PREFIX:
|
|
component = line[len(PREFIX):]
|
|
components.append(component)
|
|
if component not in requirements:
|
|
requirements[component] = []
|
|
elif line[0] != '#':
|
|
for component in components:
|
|
requirements[component].append(line)
|
|
return requirements
|
|
|
|
# Store a JSON dump of Nixpkgs' python3Packages
|
|
output = subprocess.check_output(['nix-env', '-f', os.path.dirname(sys.argv[0]) + '/../../..', '-qa', '-A', PKG_SET, '--json'])
|
|
packages = json.loads(output)
|
|
|
|
def name_to_attr_path(req):
|
|
attr_paths = []
|
|
pattern = re.compile('python3\\.6-{}-\\d'.format(req), re.I)
|
|
for attr_path, package in packages.items():
|
|
if pattern.match(package['name']):
|
|
attr_paths.append(attr_path)
|
|
# Let's hope there's only one derivation with a matching name
|
|
assert(len(attr_paths) <= 1)
|
|
if attr_paths:
|
|
return attr_paths[0]
|
|
else:
|
|
return None
|
|
|
|
version = get_version()
|
|
requirements = fetch_reqs(version=version)
|
|
build_inputs = {}
|
|
for component, reqs in requirements.items():
|
|
attr_paths = []
|
|
for req in reqs:
|
|
try:
|
|
name = Requirement.parse(req).project_name
|
|
attr_path = name_to_attr_path(name)
|
|
if attr_path is not None:
|
|
# Add attribute path without "python3Packages." prefix
|
|
attr_paths.append(attr_path[len(PKG_SET + '.'):])
|
|
except RequirementParseError:
|
|
continue
|
|
else:
|
|
build_inputs[component] = attr_paths
|
|
|
|
# Only select components which have any dependency
|
|
#build_inputs = {k: v for k, v in build_inputs.items() if len(v) > 0}
|
|
|
|
with open(os.path.dirname(sys.argv[0]) + '/component-packages.nix', 'w') as f:
|
|
f.write('# Generated from parse-requirements.py\n')
|
|
f.write('# Do not edit!\n\n')
|
|
f.write('{\n')
|
|
f.write(' version = "{}";\n'.format(version))
|
|
f.write(' components = {\n')
|
|
for component, attr_paths in build_inputs.items():
|
|
f.write(' "{}" = ps: with ps; [ '.format(component))
|
|
f.write(' '.join(attr_paths))
|
|
f.write(' ];\n')
|
|
f.write(' };\n')
|
|
f.write('}\n')
|