Module Depsolver

module Depsolver: sig .. end

Dependency solver. Implementation of the Edos algorithms

type solver

the solver is an abstract data type associated to a universe

val load : ?check:bool -> Cudf.universe -> solver

initialize the solver. If check is true (default), then check for universe consistency (cf. Cudf_checker.is_consistent)

val edos_install : ?global_constraints:bool ->
       Cudf.universe -> Cudf.package -> Diagnostic.diagnosis

check if the given package can be installed in the universe

global_constraints : : enforce global constraints on the given universe. In particular packages marked as `Keep_package must be always installed. Default false.

val edos_coinstall : ?global_constraints:bool ->
       Cudf.universe -> Cudf.package list -> Diagnostic.diagnosis

check if the give package list can be installed in the universe

global_constraints : : enforce global constraints on the given universe. In particular packages marked as `Keep_package must be always installed. Default false.

val edos_coinstall_prod : ?global_constraints:bool ->
       Cudf.universe -> Cudf.package list list -> Diagnostic.diagnosis list

accept a list of list of packages and return the coinstallability test of the cartesian product.

val trim : ?global_constraints:bool -> Cudf.universe -> Cudf.universe

remove uninstallable packages from the universe

val find_broken : ?global_constraints:bool -> Cudf.universe -> Cudf.package list

return the list of the broken packages

val univcheck : ?global_constraints:bool ->
       ?callback:(Diagnostic.diagnosis -> unit) -> Cudf.universe -> int

univcheck check if all packages in the universe can be installed. Since not all packages are directly tested for installation, if a packages is installable, the installation might be empty. To obtain an installation set for each installable packages, the correct procedure is to iter on the list of packages.
Returns the number of broken packages

global_constraints : : enforce global constraints on the given universe. In particular packages marked as `Keep_package must be always installed. Default true.

callback : : execute a function for each package. This function can have side effects and can be used to collect the installation set or the failure reason.

listcheck ~callback:c solver l check if all packages in l can be installed.

Invariant : l is a subset of universe can be installed in the solver universe.

val listcheck : ?global_constraints:bool ->
       ?callback:(Diagnostic.diagnosis -> unit) ->
       Cudf.universe -> Cudf.package list -> int

val dependency_closure : ?maxdepth:int ->
       ?conjunctive:bool -> Cudf.universe -> Cudf.package list -> Cudf.package list

dependency_closure universe l compute the dependencies closure of the give package list. Invariant : l must be a subset of universe

val reverse_dependencies : Cudf.universe -> Cudf.package list Common.CudfAdd.Cudf_hashtbl.t

reverse_dependencies univ compute the reverse dependency list of all packages in the universe univ

val reverse_dependency_closure : ?maxdepth:int -> Cudf.universe -> Cudf.package list -> Cudf.package list

reverse_dependencies_closure univ compute the reverse dependency list of all packages in l in the universe univ

type enc =

`\|`	`Cnf`
`\|`	`Dimacs`

val output_clauses : ?global_constraints:bool -> ?enc:enc -> Cudf.universe -> string

output_clauses enc univ return a string encoded accordingly to enc (default cnf).

global_constraints : : enforce global constraints on the given universe.

val check_request : Cudf.cudf_doc -> Diagnostic.diagnosis