def cargo_common_do_patch_paths(d):
    import shutil

    cargo_config = os.path.join(d.getVar("CARGO_HOME"), "config")
    if not os.path.exists(cargo_config):
        return

    src_uri = (d.getVar('SRC_URI') or "").split()
    if len(src_uri) == 0:
        return

    patches = dict()
    workdir = d.getVar('WORKDIR')
    fetcher = bb.fetch2.Fetch(src_uri, d)
    for url in fetcher.urls:
        ud = fetcher.ud[url]
        if ud.type == 'git':
            name = ud.parm.get('name')
            destsuffix = ud.parm.get('destsuffix')
            if name is not None and destsuffix is not None:
                if ud.user:
                    repo = '%s://%s@%s%s' % (ud.proto, ud.user, ud.host, ud.path)
                else:
                    repo = '%s://%s%s' % (ud.proto, ud.host, ud.path)
                path = '%s = { path = "%s" }' % (name, os.path.join(workdir, destsuffix))
                patches.setdefault(repo, []).append(path)

    with open(cargo_config, "a+") as config:
        for k, v in patches.items():
            print('\n[patch."%s"]' % k, file=config)
            for name in v:
                print(name, file=config)

    if not patches:
        return

    # Cargo.lock file is needed for to be sure that artifacts
    # downloaded by the fetch steps are those expected by the
    # project and that the possible patches are correctly applied.
    # Moreover since we do not want any modification
    # of this file (for reproducibility purpose), we prevent it by
    # using --frozen flag (in CARGO_BUILD_FLAGS) and raise a clear error
    # here is better than letting cargo tell (in case the file is missing)
    # "Cargo.lock should be modified but --frozen was given"

    lockfile = d.getVar("CARGO_LOCK_PATH")
    if not os.path.exists(lockfile):
        bb.fatal(f"{lockfile} file doesn't exist")

    # There are patched files and so Cargo.lock should be modified but we use
    # --frozen so let's handle that modifications here.
    #
    # Note that a "better" (more elegant ?) would have been to use cargo update for
    # patched packages:
    #  cargo update --offline -p package_1 -p package_2
    # But this is not possible since it requires that cargo local git db
    # to be populated and this is not the case as we fetch git repo ourself.

    lockfile_orig = lockfile + ".orig"
    if not os.path.exists(lockfile_orig):
        shutil.copy(lockfile, lockfile_orig)

    newlines = []
    with open(lockfile_orig, "r") as f:
        for line in f.readlines():
            if not line.startswith("source = \"git"):
                newlines.append(line)

    with open(lockfile, "w") as f:
        f.writelines(newlines)

cargo_common_do_patch_paths(d)