pub enum DerivationTree<P: Package, VS: VersionSet> {
    External(External<P, VS>),
    Derived(Derived<P, VS>),
}
Expand description

Derivation tree resulting in the impossibility to solve the dependencies of our root package.

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External(External<P, VS>)

External incompatibility.

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Derived(Derived<P, VS>)

Incompatibility derived from two others.

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impl<P: Package, VS: VersionSet> DerivationTree<P, VS>

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pub fn collapse_no_versions(&mut self)

Merge the NoVersions external incompatibilities with the other one they are matched with in a derived incompatibility. This cleans up quite nicely the generated report. You might want to do this if you know that the DependencyProvider was not run in some kind of offline mode that may not have access to all versions existing.

Trait Implementations§

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impl<P: Clone + Package, VS: Clone + VersionSet> Clone for DerivationTree<P, VS>

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fn clone(&self) -> DerivationTree<P, VS>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<P: Debug + Package, VS: Debug + VersionSet> Debug for DerivationTree<P, VS>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<P, VS> Freeze for DerivationTree<P, VS>
where P: Freeze, VS: Freeze, <VS as VersionSet>::V: Freeze,

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impl<P, VS> RefUnwindSafe for DerivationTree<P, VS>

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impl<P, VS> Send for DerivationTree<P, VS>
where P: Sync + Send, VS: Sync + Send, <VS as VersionSet>::V: Sync + Send,

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impl<P, VS> Sync for DerivationTree<P, VS>
where P: Sync + Send, VS: Sync + Send, <VS as VersionSet>::V: Sync + Send,

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impl<P, VS> Unpin for DerivationTree<P, VS>
where P: Unpin, VS: Unpin, <VS as VersionSet>::V: Unpin,

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impl<P, VS> UnwindSafe for DerivationTree<P, VS>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.