update-flake-lock/flake.lock

{
  "nodes": {
    "nixpkgs": {
      "locked": {
        "lastModified": 1654682581,
        "narHash": "sha256-Jb1PQCwKgwdNAp907eR5zPzuxV+kRroA3UIxUxCMJ9s=",
        "owner": "nixos",
        "repo": "nixpkgs",
        "rev": "e0169d7a9d324afebf5679551407756c77af8930",
        "type": "github"
      },
      "original": {
        "owner": "nixos",
        "ref": "nixos-unstable",
        "repo": "nixpkgs",
        "type": "github"
      }
    },
    "root": {
      "inputs": {
        "nixpkgs": "nixpkgs"
      }
    }
  },
  "root": "root",
  "version": 7
}