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#! /usr/bin/env nix-shell | |
#! nix-shell -i python3 -p "python3.withPackages (ps: with ps; [ setuptools ])" | |
from urllib.request import urlopen | |
import subprocess | |
import json | |
import re | |
from pkg_resources import Requirement, RequirementParseError | |
PREFIX = '# homeassistant.components.' | |
PKG_SET = 'python3Packages' | |
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 | |
output = subprocess.check_output(['nix-env', '-f', '../../..', '-qa', '-A', PKG_SET, '--json']) | |
packages = json.loads(output) | |
def name_to_attr_path(req): | |
attr_paths = [] | |
m = re.compile('python3\\.6-{}-\\d'.format(req)) | |
for attr_path, package in packages.items(): | |
if m.match(package['name']): | |
attr_paths.append(attr_path) | |
assert(len(attr_paths) <= 1) | |
if attr_paths: | |
return attr_paths[0] | |
else: | |
return None | |
requirements = fetch_reqs() | |
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('component-packages.nix', 'w') as f: | |
f.write('[\n') | |
for component, attr_paths in build_inputs.items(): | |
f.write(' {\n') | |
f.write(' attrPath = [ "') | |
f.write('" "'.join(component.split('.'))) | |
f.write('" ];\n') | |
f.write(' extraPackages = ps: with ps; [ ') | |
f.write(' '.join(attr_paths)) | |
f.write(' ];\n') | |
f.write(' }\n') | |
f.write(']') |
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