- Moved clight, clight-gui, and clightd from pkgs/applications/misc/clight/
into pkgs/by-name/cl/.
- Updated derivations to use `stdenv.mkDerivation (finalAttrs: { ... })`
style instead of `rec`.
- Switched from `rev`/`sha256` to `tag`/`hash` in fetchFromGitHub.
- Applied `libsForQt5` consistently for clight-gui buildInputs and hooks.
- Added postPatch to clight-gui to require cmake >= 3.10.
- Adjusted `meta` blocks to avoid `with lib;` and use explicit `lib.*`.
- Removed old package references from all-packages.nix.
