scooter: compile only `scooter`

I was seeing the following error when installing `scooter` after
installing `lsp-ai`. This change specifies the bin `scooter`.

```bash
➜ nix profile add nixpkgs#scooter
error: An existing package already provides the following file:

/nix/store/lzqlq6jrb4rlx6si51xrg3blgcvpn0d9-lsp-ai-0.7.1/bin/xtask

       This is the conflicting file from the new package:

/nix/store/nminr7pl0zd9ikr2xbdbx74lilwcm3bk-scooter-0.5.3/bin/xtask

       To remove the existing package:

         nix profile remove lsp-ai

       The new package can also be added next to the existing one by
assigning a different priority.
       The conflicting packages have a priority of 5.
       To prioritise the new package:

         nix profile add
flake:nixpkgs#legacyPackages.aarch64-darwin.scooter --priority 4

       To prioritise the existing package:

         nix profile add
flake:nixpkgs#legacyPackages.aarch64-darwin.scooter --priority 6
```

0 files changed, 0 insertions, 0 deletions