Enum LockError 

#[non_exhaustive]
pub enum LockError {
    Parse(Error),
    MissingRoot,
    RootHasNoInputs,
    InputHasNoSubInputs {
        path: String,
    },
    InputNotFound {
        path: String,
    },
    FollowsTargetMissing {
        path: String,
    },
    NodeMissingForPath {
        node: String,
        path: String,
    },
    NodeMissing {
        node: String,
    },
    FollowsCycle,
    NodeNotLocked,
    LockedHasNoRev,
}

Errors that arise from parsing or walking flake.lock.

Each variant pinpoints a distinct shape failure: a missing field, a follows cycle, or a node that the resolver cannot find. The variants carry the smallest contextual data (segment path, node key) that lets the caller reconstruct the failure without reparsing the message.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Parse(Error)

flake.lock did not parse as JSON.

MissingRoot

The lockfile has no root node referenced by nodes.

RootHasNoInputs

The root node carries no inputs, so a path cannot be walked.

InputHasNoSubInputs

An intermediate input on the path has no sub-inputs.

Fields

path: String

InputNotFound

A path segment does not resolve to a declared input.

Fields

path: String

FollowsTargetMissing

A follows declaration with an empty target was encountered while walking. Surfaced as a hard failure when the path needs a target.

Fields

path: String

NodeMissingForPath

The node referenced by a path segment is absent from the nodes map.

Fields

node: String

path: String

NodeMissing

The node looked up directly by name is absent.

Fields

node: String

FollowsCycle

Recursion budget exhausted while resolving a follows path.

NodeNotLocked

A node has no locked block (so no rev can be retrieved).

LockedHasNoRev

A locked block has no rev.

Trait Implementations

impl Debug for LockError

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for LockError

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for LockError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for LockError

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<LockError> for Error

fn from(source: LockError) -> Self

Converts to this type from the input type.