On 2017-12-20 09:56, Vincent Delecroix wrote:
In #24285, I did implement a _arb_ and _acb_ methods on number field elements. In order for the coercion model to use it, I had to fight with coercions declared in the constructor (self._populate_coercion_lists_) versus has_coerce_map_from. Depending on what you choose, different coercions are chosen. Namely, there was a predefined coercion RLF -> RBF in the constructor. As a consequence, any object with a coercion to RLF would go through this map. It is the case for number fields.
Is there a concrete bug to be fixed here. If so: please create a ticket. Or did you work around it?
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