use anyhow::{anyhow, Ok, Result};

struct MyType;

trait MyTrait1: Sized {
    fn foo(my_type: MyType) -> Result<Self> {
        Ok(Self::try_from_my_type(my_type)?)
    }

    fn try_from_my_type(my_type: MyType) -> Result<Self>;
}

impl<T> MyTrait1 for T
where
    T: Sized + TryFrom<MyType>,
{
    fn try_from_my_type(my_type: MyType) -> Result<Self> {
        Self::try_from(my_type).map_err(|_| anyhow!("Failed to convert"))
    }
}

trait MyTrait2: Sized {
    fn foo(my_type: MyType) -> Result<Self> {
        Ok(Self::try_from_my_type(my_type)?)
    }

    fn try_from_my_type(my_type: MyType) -> Result<Self>;
}

impl<T> MyTrait2 for T
where
    T: Sized + From<MyType>,
{
    fn try_from_my_type(my_type: MyType) -> Result<Self> {
        Ok(Self::from(my_type))
    }
}