generate-dependabot

#!/usr/bin/env python3
"""Generates Dependabot configuration for Weblate repositories."""

import os
import sys

import ruamel.yaml

root = ruamel.yaml.comments.CommentedMap()
root.yaml_set_start_comment(
    "This file is generated in https://github.com/WeblateOrg/meta/"
)
root["version"] = 2
root["updates"] = []

automerge = {"github-actions", "pip", "docker"}

detections = (
    (".github/workflows", "github-actions", "/"),
    ("requirements.txt", "pip", "/"),
    ("requirements-lint.txt", "pip", "/"),
    (".gitmodules", "gitsubmodule", "/"),
    ("Dockerfile", "docker", "/"),
    ("/scripts/yarn", "npm", "/scripts/yarn"),
)

if len(sys.argv) > 1:
    os.chdir(sys.argv[1])

ecosystems = {
    (ecosystem, directory)
    for filename, ecosystem, directory in detections
    if os.path.exists(filename)
}

for ecosystem, directory in sorted(ecosystems):
    update = {
        "package-ecosystem": ecosystem,
        "directory": directory,
        "schedule": {"interval": "daily"},
        "labels": ["dependencies"],
    }
    # Add automerge label
    if ecosystem in automerge:
        update["labels"].append("automerge")
    root["updates"].append(update)


yaml = ruamel.yaml.YAML()
with open(".github/dependabot.yml", "w") as handle:
    yaml.indent(mapping=2, sequence=4, offset=2)
    yaml.dump(root, handle)