general dependency bump

[benaryorg]

• the nixpkgs version from the lockfile runs into issues for everyone with the Nix "no-url-literals" setting
• similarly the README contains a snipped which breaks with that setting
• looking at the history there has indeed been a lockfile update, however it did not touch the flake.nix which means the repo still uses the 21.05 release which is EoL by about three years
• changing to nixos-unstable means that the flake can be updated using nix flake update --commit-lock-file --refresh without having to actually modify the flake.nix
  • flake users – i.e. the ones affected by this – can and should always use overrides to get a version matching their OS version anyway (this applies to non-NixOS users too)
• building in the current state of the repository fails since dependencies cannot be fetched somehow, executing the bootstrap fixed this
  • I cannot use the then built mvn2nix to update the mvn2nix dependencies for whatever reason though, however other projects work just fine
  • this also required the outputHash to be bumped, which is great because now it can use the new hash format with the sha256- prefix, took me a while to find the hash since the mismatch output listed the new format for the old string too

Flake lock file updates:

• Updated input 'nixpkgs':
'github:NixOS/nixpkgs/022caabb5f2265ad4006c1fa5b1ebe69fb0c3faf' (2022-08-07)
→ 'github:NixOS/nixpkgs/9357f4f23713673f310988025d9dc261c20e70c6' (2024-09-21)
• Updated input 'utils':
'github:numtide/flake-utils/b1d9ab70662946ef0850d488da1c9019f3a9752a' (2024-03-11)
→ 'github:numtide/flake-utils/c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a' (2024-09-17)