these 3 derivations will be built:
  /nix/store/40y9w661ysgh1xvgb50wbn5c83smpjh8-treefmt.toml.drv
  /nix/store/1mjh32lyn99m31zk0jqqfdsydwniiqcw-treefmt.drv
  /nix/store/vx3aalhdhmcg2p07ynhg2dmr06ls25vx-treefmt-check.drv
this path will be fetched (0.0 KiB download, 9.5 MiB unpacked):
  /nix/store/ibqbhja47bwv6a0pr6swj4ldpnrhqb9f-prettier-3.9.6
building '/nix/store/40y9w661ysgh1xvgb50wbn5c83smpjh8-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/1mjh32lyn99m31zk0jqqfdsydwniiqcw-treefmt.drv'
building '/nix/store/vx3aalhdhmcg2p07ynhg2dmr06ls25vx-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 575 files
treefmt-check> emitted 380 files for processing
treefmt-check> formatted 380 files (1 changed) in 792ms
treefmt-check>  M packages/spaces-integration-gateway/gateway-core.ts
treefmt-check> diff --git a/packages/spaces-integration-gateway/gateway-core.ts b/packages/spaces-integration-gateway/gateway-core.ts
treefmt-check> index 2fac038..94e9c0d 100644
treefmt-check> --- a/packages/spaces-integration-gateway/gateway-core.ts
treefmt-check> +++ b/packages/spaces-integration-gateway/gateway-core.ts
treefmt-check> @@ -113,8 +113,7 @@ export interface McpStep {
treefmt-check>  }
treefmt-check>  
treefmt-check>  export type McpExchangeResult =
treefmt-check> -  | { ok: true; reply: Record<string, unknown> }
treefmt-check> -  | { ok: false; reason: string };
treefmt-check> +  { ok: true; reply: Record<string, unknown> } | { ok: false; reason: string };
treefmt-check>  
treefmt-check>  /**
treefmt-check>   * One MCP exchange on a fresh unix-socket connection, the "MCP wire". It speaks
error: Cannot build '/nix/store/vx3aalhdhmcg2p07ynhg2dmr06ls25vx-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/981fc402n219rxshcdf1iy6216nvyd5p-treefmt-check
       Last 18 log lines:
       > treefmt v2.6.0traversed 575 files
       > emitted 380 files for processing
       > formatted 380 files (1 changed) in 792ms
       >  M packages/spaces-integration-gateway/gateway-core.ts
       > diff --git a/packages/spaces-integration-gateway/gateway-core.ts b/packages/spaces-integration-gateway/gateway-core.ts
       > index 2fac038..94e9c0d 100644
       > --- a/packages/spaces-integration-gateway/gateway-core.ts
       > +++ b/packages/spaces-integration-gateway/gateway-core.ts
       > @@ -113,8 +113,7 @@ export interface McpStep {
       >  }
       >  
       >  export type McpExchangeResult =
       > -  | { ok: true; reply: Record<string, unknown> }
       > -  | { ok: false; reason: string };
       > +  { ok: true; reply: Record<string, unknown> } | { ok: false; reason: string };
       >  
       >  /**
       >   * One MCP exchange on a fresh unix-socket connection, the "MCP wire". It speaks
       For full logs, run:
         nix log /nix/store/vx3aalhdhmcg2p07ynhg2dmr06ls25vx-treefmt-check.drv