github/spec-kit · error · OSError

Staged workflow file changed before commit

Error message

Staged workflow file changed before commit

What it means

Error "Staged workflow file changed before commit" thrown in github/spec-kit.

Source

Thrown at src/specify_cli/workflows/_commands.py:591

        for chunk in chunks:
            view = memoryview(chunk)
            while view:
                written = os.write(self.fd, view)
                if written <= 0:
                    raise OSError("Failed to write staged workflow file")
                view = view[written:]

    def write_bytes(self, data: bytes) -> None:
        self._write((data,))

    def verify_path(self) -> None:
        import stat

        try:
            path_stat = self.path.stat(follow_symlinks=False)
            open_stat = os.fstat(self.fd)
        except OSError as exc:
            raise OSError(
                "Staged workflow file changed before commit"
            ) from exc
        if (
            not stat.S_ISREG(path_stat.st_mode)
            or path_stat.st_dev != open_stat.st_dev
            or path_stat.st_ino != open_stat.st_ino
        ):
            raise OSError("Staged workflow file changed before commit")

    def set_mode(self, mode: int) -> None:
        if hasattr(os, "fchmod"):
            os.fchmod(self.fd, mode)

    def close(self) -> None:
        if self.fd < 0:
            return
        fd, self.fd = self.fd, -1
        try:

View on GitHub (pinned to bf88c9f9a8)

Solutions

1. Avoid concurrent modification of the staged workflow file and retry the install.

When it happens

Trigger: Thrown at src/specify_cli/workflows/_commands.py:591 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of github/spec-kit@bf88c9f9a8 (2026-08-14). Data as JSON: /api/errors/ebce4337b2d4c9c4. Report an issue: GitHub.