Enum pubgrub::error::PubGrubError

pub enum PubGrubError<DP>
where
    DP: DependencyProvider,
{
    NoSolution(DerivationTree<DP::P, DP::VS>),
    ErrorRetrievingDependencies {
        package: DP::P,
        version: DP::V,
        source: DP::Err,
    },
    SelfDependency {
        package: DP::P,
        version: DP::V,
    },
    ErrorChoosingPackageVersion(DP::Err),
    ErrorInShouldCancel(DP::Err),
    Failure(String),
}

Errors that may occur while solving dependencies.

Variants

NoSolution(DerivationTree<DP::P, DP::VS>)

There is no solution for this set of dependencies.

ErrorRetrievingDependencies

Error arising when the implementer of DependencyProvider returned an error in the method get_dependencies.

Fields

package: DP::P

Package whose dependencies we want.

version: DP::V

Version of the package for which we want the dependencies.

source: DP::Err

Error raised by the implementer of DependencyProvider.

SelfDependency

Error arising when the implementer of DependencyProvider returned a dependency on the requested package. This technically means that the package directly depends on itself, and is clearly some kind of mistake.

Fields

package: DP::P

Package whose dependencies we want.

version: DP::V

Version of the package for which we want the dependencies.

ErrorChoosingPackageVersion(DP::Err)

Error arising when the implementer of DependencyProvider returned an error in the method choose_version.

ErrorInShouldCancel(DP::Err)

Error arising when the implementer of DependencyProvider returned an error in the method should_cancel.

Failure(String)

Something unexpected happened.

Trait Implementations

impl<DP> Debug for PubGrubError<DP>

where DP: DependencyProvider,

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

Formats the value using the given formatter.

impl<DP> Display for PubGrubError<DP>

where DP: DependencyProvider,

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

Formats the value using the given formatter.

impl<DP> Error for PubGrubError<DP>

where DP: DependencyProvider, Self: Debug + Display,

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

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.