update-flake-lock/flake.lock

{
  "nodes": {
    "nixpkgs": {
      "locked": {
        "lastModified": 1651726670,
        "narHash": "sha256-dSGdzB49SEvdOJvrQWfQYkAefewXraHIV08Vz6iDXWQ=",
        "owner": "nixos",
        "repo": "nixpkgs",
        "rev": "c777cdf5c564015d5f63b09cc93bef4178b19b01",
        "type": "github"
      },
      "original": {
        "owner": "nixos",
        "ref": "nixos-unstable",
        "repo": "nixpkgs",
        "type": "github"
      }
    },
    "root": {
      "inputs": {
        "nixpkgs": "nixpkgs"
      }
    }
  },
  "root": "root",
  "version": 7
}