this derivation will be built: /nix/store/8zkbc3imy6jr1apk42zah8jdh1g87pb9-spec-buf.drv this path will be fetched (0.4 KiB download, 0.7 KiB unpacked): /nix/store/nxywk9j968v5sirnp11nq5amgp1jgk59-writable-tmpdir-as-home-hook error: Cannot build '/nix/store/8zkbc3imy6jr1apk42zah8jdh1g87pb9-spec-buf.drv'. Reason: builder failed with exit code 1. Output paths: /nix/store/49r1jvnimhm1n59hgvdbxakfp8zqppvl-spec-buf Last 3 log lines: > Failure: invalid/a.proto:1:9: syntax error: unexpected '{' > Failure: invalid/a.proto:1:9: syntax error: unexpected '{' > FAIL: exited zero on invalid input a.proto followed by valid files (https://treefmt.com/latest/reference/formatter-spec/#3-exit-nonzero-on-error) For full logs, run: nix log /nix/store/8zkbc3imy6jr1apk42zah8jdh1g87pb9-spec-buf.drv