package opam-0install

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Parameters
Signature

opam-0install
- Opam_0install
  - Dir_context
  - Model
    
    Make
    
    Context
    
    Role
  - S
    
    CONTEXT
    
    SOLVER
  - Solver
    
    Make
    
    C
    
    Diagnostics
    
    Component
    
    Note
    
    Solver
  - Switch_context

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Parameters

module Context : S.CONTEXT

Signature

include Zeroinstall_solver.S.SOLVER_INPUT
  with type rejection = Context.rejection

module Role : sig ... end

type impl

type command

type command_name = private string

type dependency

type dep_info = {

dep_role : Role.t;
dep_importance : [ `Essential | `Recommended | `Restricts ];
dep_required_commands : command_name list;

}

type requirements = {

role : Role.t;
command : command_name option;

}

val requires : Role.t -> impl -> dependency list * command_name list

val dep_info : dependency -> dep_info

val command_requires : Role.t -> command -> dependency list * command_name list

val get_command : impl -> command_name -> command option

type role_information = {

replacement : Role.t option;
impls : impl list;

}

type restriction

type machine_group = private string

val pp_impl : Stdlib.Format.formatter -> impl -> unit

val pp_command : Stdlib.Format.formatter -> command -> unit

val implementations : Role.t -> role_information

val restrictions : dependency -> restriction list

val meets_restriction : impl -> restriction -> bool

val machine_group : impl -> machine_group option

type conflict_class = private string

val conflict_class : impl -> conflict_class list

type rejection = Context.rejection

val rejects : Role.t -> (impl * rejection) list * string list

val compare_version : impl -> impl -> int

val pp_version : Stdlib.Format.formatter -> impl -> unit

val user_restrictions : Role.t -> restriction option

val pp_impl_long : Stdlib.Format.formatter -> impl -> unit

val format_machine : impl -> string

val string_of_restriction : restriction -> string

val describe_problem : impl -> rejection -> string

val dummy_impl : impl

val role : Context.t -> OpamPackage.Name.t -> Role.t

val version : impl -> OpamPackage.t option

version impl is the Opam package for impl, if any. Virtual and dummy implementations return None.

val virtual_role : impl list -> Role.t

virtual_role impls is a virtual package name with candidates impls. This is used if the user requests multiple packages on the command line (the single impl will also be virtual).

val virtual_impl : 
  context:Context.t ->
  depends:OpamPackage.Name.t list ->
  unit ->
  impl

virtual_impl ~context ~depends () is a virtual package which just depends on depends. This is used if the user requests multiple packages on the command line - each requested package becomes a dependency of the virtual implementation.

val package_name : Role.t -> OpamPackage.Name.t option

package_name role is the Opam package name for role, if any. Return None on virtual roles.

val formula : 
  restriction ->
  [ `Ensure | `Prevent ] * OpamFormula.version_formula

formula restriction returns the version formula represented by this restriction along with its negation status: (`Prevent, formula) roughly means not formula.