Enabling submodules for self doesn't work when referencing github repo from nix run

[ElrohirGT]

Describe the bug

I'm trying to make available a rust program I made using nix and flakes. The problem is when I'm inside a local copy of the repo I can enable submodules but when I try to run the same command using the github reference, it fails with the same error it gave me at the very beginning when submodules where not enabled. (See #4423 for more information on submodules and flakes).

Steps To Reproduce

Steps to reproduce the behavior:

1. git clone --recurse-submodules -j8 https://github.com/ElrohirGT/Gr-ficasComputador
2. cd Gr-ficasComputador
3. nix run '.?submodules=1#hornystein'
4. The 3rd command will probably fail in the compilation step of the program, this is fine. Is expected. What it I didn't expect was that when I try to run the same command without cloning the repo first, nix run 'github:ElrohirGT/Gr-ficasComputador?submodules=1#hornystein' it fails with:

Which is exactly the same error I was getting before finding out you need to enable submodules in your flake command.

Expected behavior

I expected the command nix run '.?submodules=1#hornystein' and nix run 'github:ElrohirGT/Gr-ficasComputador?submodules=1#hornystein' to be exactly the same in behaviour just that one uses the flake in . and the other downloads it.

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Additional context

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Metadata

Please run nix-shell -p nix-info --run "nix-info -m" and paste the result.

[user@system:~]$ nix-shell -p nix-info --run "nix-info -m"
- system: `"aarch64-darwin"`
 - host os: `Darwin 23.5.0, macOS 14.5`
 - multi-user?: `yes`
 - sandbox: `no`
 - version: `nix-env (Nix) 2.18.2`
 - channels(root): `"nixpkgs"`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixpkgs`

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[ElrohirGT]

I previously posted this issue on the incorrect repository (NixOS/nixpkgs#332073). Still they were kind enough to answer my questions and suggest using: nix run 'git+https://github.com/ElrohirGT/Gr-ficasComputador?submodules=1#hornystein'.

That command works! But it's unintuitive really, ideally it should work with the github: syntax too!