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(.module:
[library
[lux {"-" [Name]}
[abstract
[equivalence {"+" [Equivalence]}]
[monoid {"+" [Monoid]}]
["." monad {"+" [do]}]]
[control
["." try {"+" [Try]}]
["." exception {"+" [exception:]}]]
[data
["." text
["%" format {"+" [format]}]]
[collection
["." dictionary {"+" [Dictionary]}]
["." set {"+" [Set]}]
["." list ("#\." mix)]]]]]
["." // "_"
["#" profile {"+" [Name Profile]}]])
(def: .public file
"project.lux")
(type: .public Project
(Dictionary Name Profile))
(def: .public (project name profile)
(-> Name Profile Project)
(dictionary.of_list text.hash (list [name profile])))
(def: .public equivalence
(Equivalence Project)
(dictionary.equivalence //.equivalence))
(implementation: .public monoid
(Monoid Project)
(def: identity
(dictionary.empty text.hash))
(def: composite
(dictionary.merged_with (\ //.monoid composite))))
(exception: .public (unknown_profile {name Name})
(exception.report
["Name" (%.text name)]))
(exception: .public (circular_dependency {dependee Name} {dependent Name})
(exception.report
["Dependent" (%.text dependent)]
["Dependee" (%.text dependee)]))
(def: (profile' lineage project name)
(-> (Set Name) Project Name (Try Profile))
(case (dictionary.value name project)
(#.Some profile)
(case (list.example (set.member? lineage)
(value@ #//.parents profile))
(#.Some ouroboros)
(exception.except ..circular_dependency [ouroboros name])
#.None
(do {! try.monad}
[parents (monad.each ! (profile' (set.has name lineage) project)
(value@ #//.parents profile))]
(in (list\mix (function (_ parent child)
(\ //.monoid composite child parent))
(with@ #//.parents (list) profile)
parents))))
#.None
(exception.except ..unknown_profile [name])))
(def: .public profile
(-> Project Name (Try Profile))
(..profile' (set.empty text.hash)))
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