astral-sh/uv · error

There is no 'project.version' field in: {}

Error message

There is no 'project.version' field in: {}

What it means

Error "There is no 'project.version' field in: {}" thrown in astral-sh/uv.

Source

Thrown at crates/uv/src/commands/project/version.rs:153

            ))
            .await;
        }
    }

    let mut toml = PyProjectTomlMut::from_toml(
        project.pyproject_toml().raw.as_ref(),
        DependencyTarget::PyProjectToml,
    )?;

    let old_version = toml.version().map_err(|err| match err {
        Error::MalformedWorkspace => {
            if toml.has_dynamic_version() {
                anyhow!(
                    "We cannot get or set dynamic project versions in: {}",
                    pyproject_path.user_display()
                )
            } else {
                anyhow!(
                    "There is no 'project.version' field in: {}",
                    pyproject_path.user_display()
                )
            }
        }
        err => {
            anyhow!("{err}: {}", pyproject_path.user_display())
        }
    })?;

    // Figure out new metadata
    let new_version = if let Some(value) = value {
        match Version::from_str(&value) {
            Ok(version) => Some(version),
            Err(err) => match &*value {
                "major" | "minor" | "patch" | "alpha" | "beta" | "rc" | "dev" | "post"
                | "stable" => {
                    return Err(anyhow!(

View on GitHub (pinned to f1a42680ff)

When it happens

Trigger: Thrown at crates/uv/src/commands/project/version.rs:153 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of astral-sh/uv@f1a42680ff (2026-08-16). Data as JSON: /api/errors/9bafe6717018b2fe. Report an issue: GitHub.