rust-licenses.py

#!/usr/bin/python3
import argparse
import sys

import solv


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("rpm")
    args = parser.parse_args()

    pool = solv.Pool()
    pool.setarch()

    repo = pool.add_repo("upstream")
    f = solv.xfopen("/var/cache/dnf/koji.solv")
    repo.add_solv(f)
    f.close()

    repo_local = pool.add_repo("local")
    s = repo.add_rpm(sys.argv[1])

    pool.addfileprovides()
    pool.createwhatprovides()

    solver = pool.Solver()
    solver.set_flag(solv.Solver.SOLVER_FLAG_IGNORE_RECOMMENDED, True)
    problems = solver.solve(
        [pool.Job(solv.Job.SOLVER_SOLVABLE | solv.Job.SOLVER_INSTALL, s.id)]
    )
    if problems:
        for problem in problems:
            for rule in problem.findallproblemrules():
                for info in rule.allinfos():
                    print(info.problemstr())
        # TODO
        sys.exit(1)

    licenses = set()
    for p in solver.transaction().newsolvables():
        if not p.name.startswith("rust-") or not p.name.endswith("-devel"):
            continue
        licenses.add(p.lookup_str(solv.SOLVABLE_LICENSE))
    print("\n".join(f"# * {l}" for l in sorted(licenses)))


if __name__ == "__main__":
    main()