import type { RegExpVersion } from '../regex';
import { RegExpVersioningApi } from '../regex';
import type { VersioningApiConstructor } from '../types';
export declare const id = "nixpkgs";
export declare const displayName = "Nixpkgs";
export declare const urls: string[];
export declare const supportsRanges = false;
export declare class NixPkgsVersioning extends RegExpVersioningApi {
    private static readonly versionRegex;
    constructor();
    protected _parse(version: string): RegExpVersion | null;
    isStable(version: string): boolean;
    protected _compare(version: string, other: string): number;
}
export declare const api: VersioningApiConstructor;
export default api;