The dependency group '{name}' was not found in the project:

Error message

The dependency group '{name}' was not found in the project: {}

What it means

Error "The dependency group '{name}' was not found in the project: {}" thrown in astral-sh/uv.

Source

Thrown at crates/uv/src/commands/pip/operations.rs:240

                None,
                build_dispatch.locations(),
                build_dispatch.sources().clone(),
                build_dispatch.cache(),
                build_dispatch.workspace_cache(),
                client.credentials_cache(),
            )
            .await
            .with_context(|| {
                format!(
                    "Failed to read dependency groups from: {}",
                    pyproject_path.display()
                )
            })?;

            // Complain if dependency groups are named that don't appear.
            for name in groups.explicit_names() {
                if !metadata.dependency_groups.contains_key(name) {
                    Err(anyhow!(
                        "The dependency group '{name}' was not found in the project: {}",
                        pyproject_path.user_display()
                    ))?;
                }
            }
            // Apply dependency-groups
            for (group_name, group) in &metadata.dependency_groups {
                if groups.contains(group_name) {
                    requirements.extend(group.iter().cloned().map(|group| Requirement {
                        origin: Some(RequirementOrigin::Group(
                            pyproject_path.clone(),
                            metadata.name.clone(),
                            group_name.clone(),
                        )),
                        ..group
                    }));
                }
            }

View on GitHub (pinned to f1a42680ff)

When it happens

Trigger: Thrown at crates/uv/src/commands/pip/operations.rs:240 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/0d19724f8f7f03cc. Report an issue: GitHub.