Example flake with a reference to external non-flake git repository.
This repository demonstrates both flake-style inputs and raw git
repositories. Both can be overridden with --override-input.
You can build uselex as is right off the git tree:
$ nix build github:trofi/uselex-flake#uselex_live --no-write-lock-file
Or you can use a specific commit:
$ nix build github:trofi/uselex-flake#uselex_live --no-write-lock-file --override-input uselex github:trofi/uselex/fe54bc12013a2a28f1638bdd5faa2f81d4d8fd1c