Enum ValidationError 

#[non_exhaustive]
pub enum ValidationError {
    ParseError {
        message: String,
        location: Location,
    },
    DuplicateAttribute(DuplicateAttr),
    FollowsCycle {
        cycle: Cycle,
        location: Location,
    },
    FollowsStale {
        edge: Edge,
        location: Location,
    },
    FollowsTargetNotToplevel {
        edge: Edge,
        location: Location,
    },
    FollowsContradiction {
        edges: Vec<Edge>,
        location: Location,
    },
    FollowsStaleLock {
        source_path: AttrPath,
        declared_target: AttrPath,
        lock_target: Option<AttrPath>,
        location: Location,
    },
    FollowsDepthExceeded {
        edge: Edge,
        depth: usize,
        max_depth: usize,
        location: Location,
    },
}

Errors raised while parsing or analysing a flake.

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.

ParseError

rnix could not parse the source.

Fields

message: String

location: Location

DuplicateAttribute(DuplicateAttr)

Duplicate attribute in an attribute set.

FollowsCycle

A declared inputs.X.inputs.Y.follows chain forms a cycle.

Fields

cycle: Cycle

location: Location

FollowsStale

A follows declaration in flake.nix points at a nested input that no longer exists in flake.lock. Warning: the auto-follow pass should drop the declaration on the next run.

Fields

edge: Edge

Declared edge whose source has dropped out of flake.lock’s nested-input universe.

location: Location

FollowsTargetNotToplevel

A follows target points at something that is not a top-level input, e.g. inputs.foo.inputs.bar.follows = "does-not-exist".

Fields

edge: Edge

location: Location

FollowsContradiction

Two follows declarations share a source path but disagree on the target.

Fields

edges: Vec<Edge>

location: Location

FollowsStaleLock

A declared follows whose target diverges from the lockfile’s resolution of the same source path. Warning: the user edited flake.nix but never ran nix flake lock.

Fields

source_path: AttrPath

Source path of the declared follows, e.g. crane.nixpkgs.

Renamed from source because thiserror treats a field named source as the error’s #[source].

declared_target: AttrPath

Target the declaration in flake.nix asks for.

lock_target: Option<AttrPath>

Target the lockfile resolves the same source to. None if the lockfile has the path but no follows attached.

location: Location

FollowsDepthExceeded

A follows path is deeper than the configured graph traversal bound.

Fields

edge: Edge

depth: usize

max_depth: usize

location: Location

Implementations

impl ValidationError

pub fn severity(&self) -> Severity

Severity for this variant.

Trait Implementations

impl Clone for ValidationError

fn clone(&self) -> ValidationError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ValidationError

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

Formats the value using the given formatter.

impl Display for ValidationError

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

Formats the value using the given formatter.

impl Eq for ValidationError

impl Error for ValidationError

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 PartialEq for ValidationError

fn eq(&self, other: &ValidationError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ValidationError