Struct RecoverableError 

pub struct RecoverableError(/* private fields */);

A primop error that is not memoized in the thunk that triggered it, allowing the thunk to be forced again.

Since Nix 2.34, primop errors are memoized by default: once a thunk fails, forcing it again returns the same error. Use RecoverableError for errors that are transient, so the caller can retry.

On Nix < 2.34, all errors are already recoverable, so this type has no additional effect.

Available since nix-bindings-expr 0.2.1.

Implementations

impl RecoverableError

pub fn new(msg: impl Into<String>) -> Self

Trait Implementations

impl Debug for RecoverableError

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

Formats the value using the given formatter.

impl Display for RecoverableError

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

Formats the value using the given formatter.

impl Error for RecoverableError

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.