{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}

module Propellor.Types (
	-- * Core data types
	  Host(..)
	, Property(..)
	, property
	, property''
	, Desc
	, RevertableProperty(..)
	, (<!>)
	, Propellor(..)
	, LiftPropellor(..)
	, Info
	-- * Types of properties
	, UnixLike
	, Linux
	, DebianLike
	, Debian
	, Buntish
	, ArchLinux
	, FreeBSD
	, HasInfo
	, type (+)
	, TightenTargets(..)
	, TightenTargetsAllowed
	-- * Combining and modifying properties
	, Combines(..)
	, CombinedType
	, ResultCombiner
	, adjustPropertySatisfy
	-- * Other included types
	, module Propellor.Types.OS
	, module Propellor.Types.ConfigurableValue
	, module Propellor.Types.Dns
	, module Propellor.Types.Result
	, module Propellor.Types.ZFS
	) where

import GHC.TypeLits hiding (type (+))
import GHC.Exts (Constraint)
import Data.Type.Bool
import qualified Data.Semigroup as Sem
import Data.Monoid
import Control.Applicative
import Prelude

import Propellor.Types.Core
import Propellor.Types.Info
import Propellor.Types.OS
import Propellor.Types.ConfigurableValue
import Propellor.Types.Dns
import Propellor.Types.Result
import Propellor.Types.MetaTypes
import Propellor.Types.ZFS

-- | The core data type of Propellor, this represents a property
-- that the system should have, with a description, and an action to ensure
-- it has the property.
--
-- There are different types of properties that target different OS's,
-- and so have different metatypes. 
-- For example: "Property DebianLike" and "Property FreeBSD".
--
-- Also, some properties have associated `Info`, which is indicated in
-- their type: "Property (HasInfo + DebianLike)"
--
-- There are many associated type families, which are mostly used
-- internally, so you needn't worry about them.
data Property metatypes = Property metatypes Desc (Maybe (Propellor Result)) Info [ChildProperty]

instance Show (Property metatypes) where
	show :: Property metatypes -> String
show Property metatypes
p = String
"property " forall a. [a] -> [a] -> [a]
++ forall a. Show a => a -> String
show (forall p. IsProp p => p -> String
getDesc Property metatypes
p)

-- | Constructs a Property, from a description and an action to run to
-- ensure the Property is met.
--
-- Due to the polymorphic return type of this function, most uses will need
-- to specify a type signature. This lets you specify what OS the property
-- targets, etc.
--
-- For example:
--
-- > foo :: Property Debian
-- > foo = property "foo" $ do
-- >	...
-- > 	return MadeChange
property
	:: SingI metatypes
	=> Desc
	-> Propellor Result
	-> Property (MetaTypes metatypes)
property :: forall {k} (metatypes :: k).
SingI metatypes =>
String -> Propellor Result -> Property (MetaTypes metatypes)
property String
d Propellor Result
a = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property forall {k} (t :: k). SingI t => Sing t
sing String
d (forall a. a -> Maybe a
Just Propellor Result
a) forall a. Monoid a => a
mempty forall a. Monoid a => a
mempty

property''
	:: SingI metatypes
	=> Desc
	-> Maybe (Propellor Result)
	-> Property (MetaTypes metatypes)
property'' :: forall {k} (metatypes :: k).
SingI metatypes =>
String
-> Maybe (Propellor Result) -> Property (MetaTypes metatypes)
property'' String
d Maybe (Propellor Result)
a = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property forall {k} (t :: k). SingI t => Sing t
sing String
d Maybe (Propellor Result)
a forall a. Monoid a => a
mempty forall a. Monoid a => a
mempty

-- | Changes the action that is performed to satisfy a property.
adjustPropertySatisfy :: Property metatypes -> (Propellor Result -> Propellor Result) -> Property metatypes
adjustPropertySatisfy :: forall metatypes.
Property metatypes
-> (Propellor Result -> Propellor Result) -> Property metatypes
adjustPropertySatisfy (Property metatypes
t String
d Maybe (Propellor Result)
s Info
i [ChildProperty]
c) Propellor Result -> Propellor Result
f = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property metatypes
t String
d (Propellor Result -> Propellor Result
f forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Maybe (Propellor Result)
s) Info
i [ChildProperty]
c

-- | A property that can be reverted. The first Property is run
-- normally and the second is run when it's reverted.
--
-- See `Propellor.Property.Versioned.Versioned` 
-- for a way to use RevertableProperty to define different
-- versions of a host.
data RevertableProperty setupmetatypes undometatypes = RevertableProperty
	{ forall setupmetatypes undometatypes.
RevertableProperty setupmetatypes undometatypes
-> Property setupmetatypes
setupRevertableProperty :: Property setupmetatypes
	, forall setupmetatypes undometatypes.
RevertableProperty setupmetatypes undometatypes
-> Property undometatypes
undoRevertableProperty :: Property undometatypes
	}

instance Show (RevertableProperty setupmetatypes undometatypes) where
	show :: RevertableProperty setupmetatypes undometatypes -> String
show (RevertableProperty Property setupmetatypes
p Property undometatypes
_) = forall a. Show a => a -> String
show Property setupmetatypes
p

-- | Shorthand to construct a revertable property from any two Properties.
(<!>)
	:: Property setupmetatypes
	-> Property undometatypes
	-> RevertableProperty setupmetatypes undometatypes
Property setupmetatypes
setup <!> :: forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
<!> Property undometatypes
undo = forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
RevertableProperty Property setupmetatypes
setup Property undometatypes
undo

instance IsProp (Property metatypes) where
	setDesc :: Property metatypes -> String -> Property metatypes
setDesc (Property metatypes
t String
_ Maybe (Propellor Result)
a Info
i [ChildProperty]
c) String
d = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property metatypes
t String
d Maybe (Propellor Result)
a Info
i [ChildProperty]
c
	getDesc :: Property metatypes -> String
getDesc (Property metatypes
_ String
d Maybe (Propellor Result)
_ Info
_ [ChildProperty]
_) = String
d
	getChildren :: Property metatypes -> [ChildProperty]
getChildren (Property metatypes
_ String
_ Maybe (Propellor Result)
_ Info
_ [ChildProperty]
c) = [ChildProperty]
c
	addChildren :: Property metatypes -> [ChildProperty] -> Property metatypes
addChildren (Property metatypes
t String
d Maybe (Propellor Result)
a Info
i [ChildProperty]
c) [ChildProperty]
c' = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property metatypes
t String
d Maybe (Propellor Result)
a Info
i ([ChildProperty]
c forall a. [a] -> [a] -> [a]
++ [ChildProperty]
c')
	getInfoRecursive :: Property metatypes -> Info
getInfoRecursive (Property metatypes
_ String
_ Maybe (Propellor Result)
_ Info
i [ChildProperty]
c) =
		Info
i forall a. Semigroup a => a -> a -> a
<> forall a. Monoid a => [a] -> a
mconcat (forall a b. (a -> b) -> [a] -> [b]
map forall p. IsProp p => p -> Info
getInfoRecursive [ChildProperty]
c)
	getInfo :: Property metatypes -> Info
getInfo (Property metatypes
_ String
_ Maybe (Propellor Result)
_ Info
i [ChildProperty]
_) = Info
i
	toChildProperty :: Property metatypes -> ChildProperty
toChildProperty (Property metatypes
_ String
d Maybe (Propellor Result)
a Info
i [ChildProperty]
c) = String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> ChildProperty
ChildProperty String
d Maybe (Propellor Result)
a Info
i [ChildProperty]
c
	getSatisfy :: Property metatypes -> Maybe (Propellor Result)
getSatisfy (Property metatypes
_ String
_ Maybe (Propellor Result)
a Info
_ [ChildProperty]
_) = Maybe (Propellor Result)
a

instance IsProp (RevertableProperty setupmetatypes undometatypes) where
	-- | Sets the description of both sides.
	setDesc :: RevertableProperty setupmetatypes undometatypes
-> String -> RevertableProperty setupmetatypes undometatypes
setDesc (RevertableProperty Property setupmetatypes
p1 Property undometatypes
p2) String
d =
		forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
RevertableProperty (forall p. IsProp p => p -> String -> p
setDesc Property setupmetatypes
p1 String
d) (forall p. IsProp p => p -> String -> p
setDesc Property undometatypes
p2 (String
"not " forall a. [a] -> [a] -> [a]
++ String
d))
	getDesc :: RevertableProperty setupmetatypes undometatypes -> String
getDesc (RevertableProperty Property setupmetatypes
p1 Property undometatypes
_) = forall p. IsProp p => p -> String
getDesc Property setupmetatypes
p1
	getChildren :: RevertableProperty setupmetatypes undometatypes -> [ChildProperty]
getChildren (RevertableProperty Property setupmetatypes
p1 Property undometatypes
_) = forall p. IsProp p => p -> [ChildProperty]
getChildren Property setupmetatypes
p1
	-- | Only add children to the active side.
	addChildren :: RevertableProperty setupmetatypes undometatypes
-> [ChildProperty]
-> RevertableProperty setupmetatypes undometatypes
addChildren (RevertableProperty Property setupmetatypes
p1 Property undometatypes
p2) [ChildProperty]
c = forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
RevertableProperty (forall p. IsProp p => p -> [ChildProperty] -> p
addChildren Property setupmetatypes
p1 [ChildProperty]
c) Property undometatypes
p2
	-- | Return the Info of the currently active side.
	getInfoRecursive :: RevertableProperty setupmetatypes undometatypes -> Info
getInfoRecursive (RevertableProperty Property setupmetatypes
p1 Property undometatypes
_p2) = forall p. IsProp p => p -> Info
getInfoRecursive Property setupmetatypes
p1
	getInfo :: RevertableProperty setupmetatypes undometatypes -> Info
getInfo (RevertableProperty Property setupmetatypes
p1 Property undometatypes
_p2) = forall p. IsProp p => p -> Info
getInfo Property setupmetatypes
p1
	toChildProperty :: RevertableProperty setupmetatypes undometatypes -> ChildProperty
toChildProperty (RevertableProperty Property setupmetatypes
p1 Property undometatypes
_p2) = forall p. IsProp p => p -> ChildProperty
toChildProperty Property setupmetatypes
p1
	getSatisfy :: RevertableProperty setupmetatypes undometatypes
-> Maybe (Propellor Result)
getSatisfy (RevertableProperty Property setupmetatypes
p1 Property undometatypes
_) = forall p. IsProp p => p -> Maybe (Propellor Result)
getSatisfy Property setupmetatypes
p1

-- | Type level calculation of the type that results from combining two
-- types of properties.
type family CombinedType x y where
	CombinedType (Property (MetaTypes x)) (Property (MetaTypes y)) =
		Property (MetaTypes (Combine x y))
	CombinedType
		(RevertableProperty (MetaTypes x) (MetaTypes x'))
		(RevertableProperty (MetaTypes y) (MetaTypes y')) =
			RevertableProperty (MetaTypes (Combine x y)) (MetaTypes (Combine x' y'))
	-- When only one of the properties is revertable, the combined
	-- property is not fully revertable, so is not a RevertableProperty.
	CombinedType (RevertableProperty (MetaTypes x) (MetaTypes x')) (Property (MetaTypes y)) =
		Property (MetaTypes (Combine x y))
	CombinedType (Property (MetaTypes x)) (RevertableProperty (MetaTypes y) (MetaTypes y')) =
		Property (MetaTypes (Combine x y))

type ResultCombiner = Maybe (Propellor Result) -> Maybe (Propellor Result) -> Maybe (Propellor Result)

class Combines x y where
	-- | Combines together two properties, yielding a property that
	-- has the description and info of the first, and that has the
	-- second property as a child property.
	combineWith
		:: ResultCombiner
		-- ^ How to combine the actions to satisfy the properties.
		-> ResultCombiner
		-- ^ Used when combining revertable properties, to combine
		-- their reversion actions.
		-> x
		-> y
		-> CombinedType x y

instance (CheckCombinable x y, SingI (Combine x y)) => Combines (Property (MetaTypes x)) (Property (MetaTypes y)) where
	combineWith :: ResultCombiner
-> ResultCombiner
-> Property (MetaTypes x)
-> Property (MetaTypes y)
-> CombinedType (Property (MetaTypes x)) (Property (MetaTypes y))
combineWith ResultCombiner
f ResultCombiner
_ (Property MetaTypes x
_ String
d1 Maybe (Propellor Result)
a1 Info
i1 [ChildProperty]
c1) (Property MetaTypes y
_ String
d2 Maybe (Propellor Result)
a2 Info
i2 [ChildProperty]
c2) =
		forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property forall {k} (t :: k). SingI t => Sing t
sing String
d1 (ResultCombiner
f Maybe (Propellor Result)
a1 Maybe (Propellor Result)
a2) Info
i1 (String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> ChildProperty
ChildProperty String
d2 Maybe (Propellor Result)
a2 Info
i2 [ChildProperty]
c2 forall a. a -> [a] -> [a]
: [ChildProperty]
c1)
instance (CheckCombinable x y, CheckCombinable x' y', SingI (Combine x y), SingI (Combine x' y')) => Combines (RevertableProperty (MetaTypes x) (MetaTypes x')) (RevertableProperty (MetaTypes y) (MetaTypes y')) where
	combineWith :: ResultCombiner
-> ResultCombiner
-> RevertableProperty (MetaTypes x) (MetaTypes x')
-> RevertableProperty (MetaTypes y) (MetaTypes y')
-> CombinedType
     (RevertableProperty (MetaTypes x) (MetaTypes x'))
     (RevertableProperty (MetaTypes y) (MetaTypes y'))
combineWith ResultCombiner
sf ResultCombiner
tf (RevertableProperty Property (MetaTypes x)
s1 Property (MetaTypes x')
t1) (RevertableProperty Property (MetaTypes y)
s2 Property (MetaTypes y')
t2) =
		forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
RevertableProperty
			(forall x y.
Combines x y =>
ResultCombiner -> ResultCombiner -> x -> y -> CombinedType x y
combineWith ResultCombiner
sf ResultCombiner
tf Property (MetaTypes x)
s1 Property (MetaTypes y)
s2)
			(forall x y.
Combines x y =>
ResultCombiner -> ResultCombiner -> x -> y -> CombinedType x y
combineWith ResultCombiner
tf ResultCombiner
sf Property (MetaTypes x')
t1 Property (MetaTypes y')
t2)
instance (CheckCombinable x y, SingI (Combine x y)) => Combines (RevertableProperty (MetaTypes x) (MetaTypes x')) (Property (MetaTypes y)) where
	combineWith :: ResultCombiner
-> ResultCombiner
-> RevertableProperty (MetaTypes x) (MetaTypes x')
-> Property (MetaTypes y)
-> CombinedType
     (RevertableProperty (MetaTypes x) (MetaTypes x'))
     (Property (MetaTypes y))
combineWith ResultCombiner
sf ResultCombiner
tf (RevertableProperty Property (MetaTypes x)
x Property (MetaTypes x')
_) Property (MetaTypes y)
y = forall x y.
Combines x y =>
ResultCombiner -> ResultCombiner -> x -> y -> CombinedType x y
combineWith ResultCombiner
sf ResultCombiner
tf Property (MetaTypes x)
x Property (MetaTypes y)
y
instance (CheckCombinable x y, SingI (Combine x y)) => Combines (Property (MetaTypes x)) (RevertableProperty (MetaTypes y) (MetaTypes y')) where
	combineWith :: ResultCombiner
-> ResultCombiner
-> Property (MetaTypes x)
-> RevertableProperty (MetaTypes y) (MetaTypes y')
-> CombinedType
     (Property (MetaTypes x))
     (RevertableProperty (MetaTypes y) (MetaTypes y'))
combineWith ResultCombiner
sf ResultCombiner
tf Property (MetaTypes x)
x (RevertableProperty Property (MetaTypes y)
y Property (MetaTypes y')
_) = forall x y.
Combines x y =>
ResultCombiner -> ResultCombiner -> x -> y -> CombinedType x y
combineWith ResultCombiner
sf ResultCombiner
tf Property (MetaTypes x)
x Property (MetaTypes y)
y

class TightenTargets p where
	-- | Tightens the MetaType list of a Property (or similar),
	-- to contain fewer targets.
	--
	-- For example, to make a property that uses apt-get, which is only
	-- available on DebianLike systems:
	--
	-- > upgraded :: Property DebianLike
	-- > upgraded = tightenTargets $ cmdProperty "apt-get" ["upgrade"]
	tightenTargets
		:: 
			( TightenTargetsAllowed untightened tightened
			, SingI tightened
			)
		=> p (MetaTypes untightened)
		-> p (MetaTypes tightened)

-- Note that this uses PolyKinds
type family TightenTargetsAllowed untightened tightened :: Constraint where
	TightenTargetsAllowed untightened tightened =
		If (Targets tightened `IsSubset` Targets untightened
		    && NonTargets untightened `IsSubset` NonTargets tightened)
			('True ~ 'True)
			(IfStuck (Targets tightened)
				(DelayError
					('Text "Unable to infer desired Property type in this use of tightenTargets."
					 ':$$: ('Text "Consider adding a type annotation.")
					)
				)
				(DelayErrorFcf
					('Text "This use of tightenTargets would widen, not narrow, adding: "
					 ':$$: PrettyPrintMetaTypes (Difference (Targets tightened) (Targets untightened))
					)
				)
			)

instance TightenTargets Property where
	tightenTargets :: forall (untightened :: [MetaType]) (tightened :: [MetaType]).
(TightenTargetsAllowed untightened tightened, SingI tightened) =>
Property (MetaTypes untightened) -> Property (MetaTypes tightened)
tightenTargets (Property MetaTypes untightened
_ String
d Maybe (Propellor Result)
a Info
i [ChildProperty]
c) = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property forall {k} (t :: k). SingI t => Sing t
sing String
d Maybe (Propellor Result)
a Info
i [ChildProperty]
c

-- | Any type of Property is a Semigroup. When properties x and y are
-- appended together, the resulting property has a description like
-- "x and y". Note that when x fails to be ensured, it will not
-- try to ensure y.
instance SingI metatypes => Sem.Semigroup (Property (MetaTypes metatypes))
  where
	Property MetaTypes metatypes
_ String
d1 Maybe (Propellor Result)
a1 Info
i1 [ChildProperty]
c1 <> :: Property (MetaTypes metatypes)
-> Property (MetaTypes metatypes) -> Property (MetaTypes metatypes)
<> Property MetaTypes metatypes
_ String
d2 Maybe (Propellor Result)
a2 Info
i2 [ChildProperty]
c2 =
	  	forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property forall {k} (t :: k). SingI t => Sing t
sing String
d (Maybe (Propellor Result)
a1 forall a. Semigroup a => a -> a -> a
<> Maybe (Propellor Result)
a2) (Info
i1 forall a. Semigroup a => a -> a -> a
<> Info
i2) ([ChildProperty]
c1 forall a. Semigroup a => a -> a -> a
<> [ChildProperty]
c2)
	  where
		-- Avoid including "noop property" in description
		-- when using eg mconcat.
		d :: String
d = case (Maybe (Propellor Result)
a1, Maybe (Propellor Result)
a2) of
			(Just Propellor Result
_, Just Propellor Result
_) -> String
d1 forall a. Semigroup a => a -> a -> a
<> String
" and " forall a. Semigroup a => a -> a -> a
<> String
d2
			(Just Propellor Result
_, Maybe (Propellor Result)
Nothing) -> String
d1
			(Maybe (Propellor Result)
Nothing, Just Propellor Result
_) -> String
d2
			(Maybe (Propellor Result)
Nothing, Maybe (Propellor Result)
Nothing) -> String
d1

-- | Any type of Property is a Monoid.
instance SingI metatypes => Monoid (Property (MetaTypes metatypes))
  where
	-- | A property that does nothing.
	mempty :: Property (MetaTypes metatypes)
mempty = forall metatypes.
metatypes
-> String
-> Maybe (Propellor Result)
-> Info
-> [ChildProperty]
-> Property metatypes
Property forall {k} (t :: k). SingI t => Sing t
sing String
"noop property" forall a. Maybe a
Nothing forall a. Monoid a => a
mempty forall a. Monoid a => a
mempty
	mappend :: Property (MetaTypes metatypes)
-> Property (MetaTypes metatypes) -> Property (MetaTypes metatypes)
mappend = forall a. Semigroup a => a -> a -> a
(Sem.<>)

-- | Any type of RevertableProperty is a Semigroup. When revertable 
-- properties x and y are appended together, the resulting revertable
-- property has a description like "x and y".
-- Note that when x fails to be ensured, it will not try to ensure y.
instance
	( Sem.Semigroup (Property (MetaTypes setupmetatypes))
	, Sem.Semigroup (Property (MetaTypes undometatypes))
	, SingI setupmetatypes
	, SingI undometatypes
	)
	=> Sem.Semigroup (RevertableProperty (MetaTypes setupmetatypes) (MetaTypes undometatypes))
  where
	RevertableProperty Property (MetaTypes setupmetatypes)
s1 Property (MetaTypes undometatypes)
u1 <> :: RevertableProperty
  (MetaTypes setupmetatypes) (MetaTypes undometatypes)
-> RevertableProperty
     (MetaTypes setupmetatypes) (MetaTypes undometatypes)
-> RevertableProperty
     (MetaTypes setupmetatypes) (MetaTypes undometatypes)
<> RevertableProperty Property (MetaTypes setupmetatypes)
s2 Property (MetaTypes undometatypes)
u2 =
		forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
RevertableProperty (Property (MetaTypes setupmetatypes)
s1 forall a. Semigroup a => a -> a -> a
<> Property (MetaTypes setupmetatypes)
s2) (Property (MetaTypes undometatypes)
u2 forall a. Semigroup a => a -> a -> a
<> Property (MetaTypes undometatypes)
u1)

instance
	( Monoid (Property (MetaTypes setupmetatypes))
	, Monoid (Property (MetaTypes undometatypes))
	, SingI setupmetatypes
	, SingI undometatypes
	)
	=> Monoid (RevertableProperty (MetaTypes setupmetatypes) (MetaTypes undometatypes))
  where
	mempty :: RevertableProperty
  (MetaTypes setupmetatypes) (MetaTypes undometatypes)
mempty = forall setupmetatypes undometatypes.
Property setupmetatypes
-> Property undometatypes
-> RevertableProperty setupmetatypes undometatypes
RevertableProperty forall a. Monoid a => a
mempty forall a. Monoid a => a
mempty
	mappend :: RevertableProperty
  (MetaTypes setupmetatypes) (MetaTypes undometatypes)
-> RevertableProperty
     (MetaTypes setupmetatypes) (MetaTypes undometatypes)
-> RevertableProperty
     (MetaTypes setupmetatypes) (MetaTypes undometatypes)
mappend = forall a. Semigroup a => a -> a -> a
(Sem.<>)