Up

module Impl_provider

: sig

Provides implementation candidates to the solver.

#
type rejection = [
| `User_restriction_rejects of Impl.restriction
| `Poor_stability
| `No_retrieval_methods
| `Not_cached_and_offline
| `Missing_local_impl of Support.Common.filepath
| `Incompatible_OS
| `Not_binary
| `Not_source
| `Incompatible_machine
]
#
type acceptability = [
| `Acceptable
| rejection
]
#
type preferred_reason =
# | PreferAvailable
# | PreferDistro
# | PreferID
# | PreferLang
# | PreferMachine
# | PreferNonRoot
# | PreferOS
# | PreferStability
# | PreferVersion

Why did we pick one version over another?

#
val describe_problem : _ Impl.t -> rejection -> string
#
type scope_filter = {
# extra_restrictions
: Impl.restriction Support.Common.StringMap.t;
# os_ranks
: int Support.Common.StringMap.t;
# machine_ranks
: int Support.Common.StringMap.t;
# languages
: int Support.Locale.LangMap.t;
# allowed_uses
: Support.Common.StringSet.t;
}
#
type candidates = {
# replacement
: General.iface_uri option;
# impls
: Impl.generic_implementation list;
# rejects
: (Impl.generic_implementation * rejection) list;
# compare
: Impl.generic_implementation -> Impl.generic_implementation -> int * preferred_reason;
}
#
class type impl_provider =
#
method get_implementations : General.iface_uri -> source:bool -> candidates

Return all the implementations of this interface (including from feeds). Most preferred implementations should come first.

#
method is_dep_needed : Impl.dependency -> bool

Should the solver consider this dependency?

#
method extra_restrictions : Impl.restriction Support.Common.StringMap.t
#
class default_impl_provider : General.config -> Feed_provider.feed_provider -> scope_filter -> impl_provider
end