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(.using
[library
[lux "*"
[abstract
[equivalence {"+" Equivalence}]
[monoid {"+" Monoid}]
["[0]" monad {"+" do}]]
[control
["[0]" try {"+" Try}]
["[0]" exception {"+" exception:}]]
[data
["[0]" text
["%" format {"+" format}]]
[collection
["[0]" dictionary {"+" Dictionary}]
["[0]" set {"+" Set}]
["[0]" list ("[1]#[0]" mix)]]]]]
["[0]" // "_"
["[1]" 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.composite_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)
(the //.#parents profile))
{.#Some ouroboros}
(exception.except ..circular_dependency [ouroboros name])
{.#None}
(do [! try.monad]
[parents (monad.each ! (profile' (set.has name lineage) project)
(the //.#parents profile))]
(in (list#mix (function (_ parent child)
(# //.monoid composite child parent))
(has //.#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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