this derivation will be built:
  /nix/store/vr7i43gai04792j5aq11zzzw7ymzfbw8-treefmt-check.drv
building '/nix/store/vr7i43gai04792j5aq11zzzw7ymzfbw8-treefmt-check.drv'
treefmt-check> ERRO formatter | ast-grep-check: failed to apply with options '[scan --error]': exit status 1
treefmt-check> 
treefmt-check> corepkgs/flake.nix
treefmt-check> error[quote-input-name]: Quote the attribute after `inputs.` — write `inputs."foo"`, not `inputs.foo`. Flake input names are external identifiers, not code; quoting marks them as such and keeps names with dots or dashes uniform.
treefmt-check> @@ -5,7 +5,7 @@
treefmt-check> 6  6 │ {
treefmt-check> 7  7 │   description = "corepkgs — a nixpkgs-free packaging system (static seed + nushell builder)";
treefmt-check> 8  8 │ 
treefmt-check> 9    │-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
treefmt-check>    9 │+  inputs."nixpkgs".url = "github:NixOS/nixpkgs/nixpkgs-unstable";
treefmt-check> 10 10│ 
treefmt-check> 11 11│   # `...` accepts the `self` Nix always passes without deadnix stripping it.
treefmt-check> 12 12│   outputs =
treefmt-check> Note:
treefmt-check> inputs."nixpkgs".follows = "nixpkgs";  # not: inputs.nixpkgs.follows
treefmt-check> flake.inputs."bun2nix".overlays.default
treefmt-check> 
treefmt-check> Error: 1 error(s) found in code.
treefmt-check> Help: Scan succeeded and found error level diagnostics in the codebase.
treefmt-check> 
treefmt-check> 
treefmt-check> traversed 454 files
treefmt-check> emitted 323 files for processing
treefmt-check> formatted 103 files (0 changed) in 3.198s
treefmt-check> Error: failed to finalise formatting: formatting failures detected
error: Cannot build '/nix/store/vr7i43gai04792j5aq11zzzw7ymzfbw8-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/51931w8x7dla8f444y9lnrw3vpnf62p3-treefmt-check
       Last 25 log lines:
       > ERRO formatter | ast-grep-check: failed to apply with options '[scan --error]': exit status 1
       >
       > corepkgs/flake.nix
       > error[quote-input-name]: Quote the attribute after `inputs.` — write `inputs."foo"`, not `inputs.foo`. Flake input names are external identifiers, not code; quoting marks them as such and keeps names with dots or dashes uniform.
       > @@ -5,7 +5,7 @@
       > 6  6 │ {
       > 7  7 │   description = "corepkgs — a nixpkgs-free packaging system (static seed + nushell builder)";
       > 8  8 │
       > 9    │-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
       >    9 │+  inputs."nixpkgs".url = "github:NixOS/nixpkgs/nixpkgs-unstable";
       > 10 10│
       > 11 11│   # `...` accepts the `self` Nix always passes without deadnix stripping it.
       > 12 12│   outputs =
       > Note:
       > inputs."nixpkgs".follows = "nixpkgs";  # not: inputs.nixpkgs.follows
       > flake.inputs."bun2nix".overlays.default
       >
       > Error: 1 error(s) found in code.
       > Help: Scan succeeded and found error level diagnostics in the codebase.
       >
       >
       > traversed 454 files
       > emitted 323 files for processing
       > formatted 103 files (0 changed) in 3.198s
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/vr7i43gai04792j5aq11zzzw7ymzfbw8-treefmt-check.drv