switch from cabal files to hpack

.gitignore

@@ -5,5 +5,6 @@
 /.idea
 .DS_Store
 cabal.config
+*.cabal
 cabal.project.local
 .ghc.environment.*

lib/package.yaml

+name:       sturdy-lib
+version:    0.1.0.0
+synopsis:   A library for creating sound static analyses
+maintainer: Sven Keidel <svenkeidel@gmail.com>
+license:    BSD3
+github:     svenkeidel/sturdy
+category:   Language
+
+dependencies:
+  - base
+  - containers
+  - hashable
+  - mtl
+  - random
+  - text
+  - unordered-containers
+
+flags:
+  trace:
+    description: Enable tracing of the abstract intepreter
+    default:     False
+    manual:      True
+
+library:
+  ghc-options: -Wall
+  source-dirs:
+    - src
+  when:
+    - condition: flag(trace)
+      cpp-options: -DTRACE
+
+
+tests:
+  spec:
+    main: Spec.hs
+    source-dirs:
+      - test
+    dependencies:
+      - hspec
+      - sturdy-lib

lib/src/Control/Arrow/Transformer/Abstract/Fixpoint.hs

@@ -36,8 +36,6 @@ import qualified Data.Abstract.Widening as W
 import           Data.Abstract.StackWidening (StackWidening)
 import qualified Data.Abstract.StackWidening as SW
 
-#define TRACE
-
 #ifdef TRACE
 import           Debug.Trace
 import           Text.Printf
@@ -124,7 +122,7 @@ memoize (FixT f) = FixT $ \(stackWidening,widening) -> proc (((stack,inCache), o
           (x',stack') = runState (stackWidening x) stack 
       (outCache'',y) <- f (stackWidening,widening) -< (((stack',inCache), outCache'),x')
       let outCache''' = M.unsafeInsertWith (flip (T.widening widening)) x' y outCache''
-      let y' = outCache''' M.! x'
+          y' = fromJust (M.unsafeLookup x' outCache''')
       returnA -< (outCache''',y')
 
 #else
@@ -150,7 +148,7 @@ memoize (FixT f) = FixT $ \(stackWidening,widening) -> proc (((stack,inCache), o
           (x',stack') = runState (stackWidening x) stack 
       (outCache'',y) <- f (stackWidening,widening) -< trace (printf "CALL: %s" (show x')) (((stack',inCache), outCache'),x')
       let outCache''' = M.unsafeInsertWith (flip (T.widening widening)) x' y outCache''
-          y' = fromMaybe (error "x not in cache") (M.unsafeLookup x outCache''')
+          y' = fromJust (M.unsafeLookup x' outCache''')
       returnA -< trace (printf "CACHE: %s := (%s -> %s)\n" (show x) (show y) (show y') ++
                         printf "RET:  %s -> %s" (show x') (show y'))
                   (M.unsafeInsertWith (flip (T.widening widening)) x y outCache'',y')

lib/src/Control/Arrow/Transformer/Abstract/LiveVariables.hs

-{-# LANGUAGE GeneralizedNewtypeDeriving #-}
-{-# LANGUAGE StandaloneDeriving #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE UndecidableInstances #-}
-{-# LANGUAGE Arrows #-}
-{-# LANGUAGE TypeFamilies #-}
-{-# LANGUAGE DeriveGeneric #-}
-module Control.Arrow.Transformer.Abstract.LiveVariables where
-
-import           Prelude hiding (id,(.),read)
-
-import           Control.Category
-import           Control.Arrow
-import           Control.Arrow.Alloc
-import           Control.Arrow.Conditional
-import           Control.Arrow.Environment
-import           Control.Arrow.Except
-import           Control.Arrow.Fail
-import           Control.Arrow.Fix
-import           Control.Arrow.Lift
-import           Control.Arrow.Random
-import           Control.Arrow.Reader
-import           Control.Arrow.Store
-import           Control.Arrow.Writer
-
-import           Control.Arrow.Transformer.Writer
-
-import           Data.Identifiable
-import           Data.Hashable
-import           Data.Order
-import           Data.Semigroup
-
-import           Data.Abstract.DiscretePowerset(Pow)
-import qualified Data.Abstract.DiscretePowerset as P
-
--- | Transition function for live variables
-newtype LiveVars v = LiveVars (Pow v -> Pow v)
-
-vars :: LiveVars v -> Pow v
-vars (LiveVars f) = f P.empty
-
-instance Show v => Show (LiveVars v) where
-  show = show . vars
-
-instance Hashable v => Hashable (LiveVars v) where
-  hashWithSalt salt = hashWithSalt salt . vars
-
-instance Eq v => Eq (LiveVars v) where
-  lv1 == lv2 = vars lv1 == vars lv2
-
-instance Identifiable v => PreOrd (LiveVars v) where
-  lv1 ⊑ lv2 = vars lv1 ⊑ vars lv2
-
-instance Identifiable v => Complete (LiveVars v) where
-  LiveVars f ⊔ LiveVars g = LiveVars (\lv -> f lv ⊔ g lv)
-
-live :: Identifiable v => v -> LiveVars v
-live x = LiveVars $ P.insert x
-
-dead :: Identifiable v => v -> LiveVars v
-dead x = LiveVars $ P.delete x
-
--- | Composing two transition functions
-instance Semigroup (LiveVars v) where
-  (<>) = mappend
-
-instance Monoid (LiveVars v) where
-  mempty = LiveVars id
-  mappend (LiveVars f) (LiveVars g) = LiveVars (f . g)
-
--- | An arrow transformer that tracks the live variables.
-newtype LiveVariables v c x y = LiveVariables (Writer (LiveVars v) c x y)
-
-runLiveVariables :: LiveVariables v c x y -> c x (LiveVars v,y)
-runLiveVariables (LiveVariables f) = runWriter f
-
-instance (Identifiable var, ArrowRead (var,lab) val x (LiveVars var,y) c)
-  => ArrowRead (var,lab) val x y (LiveVariables var c) where
-  read (LiveVariables f) (LiveVariables g) = LiveVariables $ proc ((var,lab),x) -> do
-    tell -< live var
-    read f g -< ((var,lab),x)
-
-instance (Identifiable var, ArrowWrite (var,lab) val c) => ArrowWrite (var,lab) val (LiveVariables var c) where
-  write = LiveVariables $ proc ((var,lab),val) -> do
-    tell -< dead var
-    write -< ((var,lab),val)
-
-type instance Fix x y (LiveVariables v c) = LiveVariables v (Fix x (LiveVars v,y) c)
-deriving instance (ArrowFix x (LiveVars v,y) c) => ArrowFix x y (LiveVariables v c)
-
-deriving instance ArrowLift (LiveVariables v)
-instance (ArrowApply c) => ArrowApply (LiveVariables v c) where
-  app = LiveVariables ((\(LiveVariables f,x) -> (f,x)) ^>> app)
-
-deriving instance (Arrow c) => Category (LiveVariables v c)
-deriving instance (Arrow c) => Arrow (LiveVariables v c)
-deriving instance (ArrowChoice c) => ArrowChoice (LiveVariables v c)
-deriving instance (ArrowReader r c) => ArrowReader r (LiveVariables v c)
-deriving instance (ArrowFail e c) => ArrowFail e (LiveVariables v c)
-deriving instance (ArrowExcept x (LiveVars v,y) e c) => ArrowExcept x y e (LiveVariables v c)
--- deriving instance (ArrowState s c) => ArrowState s (LiveVariables v c)
-deriving instance ArrowAlloc x y c => ArrowAlloc x y (LiveVariables v c)
-deriving instance ArrowRand r c => ArrowRand r (LiveVariables v c)
-deriving instance ArrowCond val x y (LiveVars v,z) c => ArrowCond val x y z (LiveVariables v c)
-deriving instance ArrowEnv x y env c => ArrowEnv x y env (LiveVariables v c)
-
-deriving instance PreOrd (c x (LiveVars v,y)) => PreOrd (LiveVariables v c x y)
-deriving instance LowerBounded (c x (LiveVars v,y)) => LowerBounded (LiveVariables v c x y)
-deriving instance Complete (c x (LiveVars v,y)) => Complete (LiveVariables v c x y)
-deriving instance CoComplete (c x (LiveVars v,y)) => CoComplete (LiveVariables v c x y)
-deriving instance UpperBounded (c x (LiveVars v,y)) => UpperBounded (LiveVariables v c x y)

lib/src/Control/Arrow/Transformer/Compose.hs

-{-# LANGUAGE KindSignatures #-}
-{-# LANGUAGE TypeOperators #-}
-{-# LANGUAGE TypeFamilies #-}
-{-# LANGUAGE GeneralizedNewtypeDeriving #-}
-{-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE LiberalTypeSynonyms #-}
-{-# LANGUAGE RankNTypes #-}
-{-# LANGUAGE UndecidableInstances #-}
-module Control.Arrow.Transformer.Compose where
-
-import Control.Category
-import Control.Arrow
-import Control.Arrow.Trans
-import Control.Arrow.Fix
-import Data.Order
-
-newtype IdentityT c x y = IdentityT {runIdentityT :: c x y}
-  deriving (Category,Arrow,ArrowChoice,PreOrd,Complete)
-
-instance ArrowTrans IdentityT where
-  type Dom1 IdentityT x y = x
-  type Cod1 IdentityT x y = y
-  lift = IdentityT
-  unlift = runIdentityT
-
-instance ArrowApply c => ArrowApply (IdentityT c) where
-  app = lift $ first unlift ^>> app
-
-instance ArrowFix x y c => ArrowFix x y (IdentityT c) where
-  fix = liftFix
-
-newtype ComposeT
-  (s :: (* -> * -> *) -> (* -> * -> *))
-  (t :: (* -> * -> *) -> (* -> * -> *))
-  (c :: * -> * -> *) (x :: *) (y :: *)
-  = ComposeT { runComposeT :: (s (t c)) x y }
-
-type (:*:) = ComposeT
-
-instance (ArrowTrans s,ArrowTrans t) => ArrowTrans (ComposeT s t) where
-  type Dom1 (ComposeT s t) x y = Dom1 t (Dom1 s x y) (Cod1 s x y)
-  type Cod1 (ComposeT s t) x y = Cod1 t (Dom1 s x y) (Cod1 s x y)
-  lift = undefined
-  unlift = undefined
-
-(*:) :: ComposeT s t c x y -> s (t c) x y
-(*:) = runComposeT

lib/sturdy-lib.cabal

-name:                sturdy-lib
-
-version:             0.1.0.0
-
--- synopsis:
-description:         A library for abstract interpretation
-license:             BSD3
-license-file:        LICENSE
-author:              Sven Keidel
-maintainer:          svenkeidel@gmail.com
--- copyright:
-category:            Language
-build-type:          Simple
-extra-source-files:
-cabal-version:       >=1.10
-
-flag trace
-  Description: Enable tracing
-  Default:     False
-
-library
-  ghc-options:         -Wall
-  if flag(trace) {
-    cpp-options:       -DTRACE
-  }
-  exposed-modules:
-                       Data.Boolean,
-                       Data.Monoidal,
-                       Data.GaloisConnection,
-                       Data.Identifiable,
-                       Data.Label,
-                       Data.Numeric,
-                       Data.Order,
-                       Data.Utils,
-                       Data.CallString,
-
-                       Data.Concrete.Boolean,
-                       Data.Concrete.Error,
-                       Data.Concrete.Failure,
-                       Data.Concrete.Powerset,
-
-                       Data.Abstract.Either,
-                       Data.Abstract.Equality,
-                       Data.Abstract.Ordering,
-                       Data.Abstract.Boolean,
-                       Data.Abstract.Failure,
-                       Data.Abstract.Error,
-                       Data.Abstract.InfiniteNumbers,
-                       Data.Abstract.FiniteMap,
-                       Data.Abstract.FreeCompletion,
-                       Data.Abstract.Interval,
-                       Data.Abstract.Maybe,
-                       Data.Abstract.Powerset,
-                       Data.Abstract.DiscretePowerset,
-                       Data.Abstract.Sign,
-                       Data.Abstract.Map,
-                       Data.Abstract.Terminating,
-                       Data.Abstract.There,
-                       Data.Abstract.Widening,
-                       Data.Abstract.StackWidening,
-
-                       Control.Arrow.Alloc,
-                       Control.Arrow.Const,
-                       Control.Arrow.Conditional,
-                       Control.Arrow.Deduplicate,
-                       Control.Arrow.Environment,
-                       Control.Arrow.Fail,
-                       Control.Arrow.Except,
-                       Control.Arrow.Fix,
-                       Control.Arrow.Random,
-                       Control.Arrow.Reader,
-                       Control.Arrow.State,
-                       Control.Arrow.Store,
-                       Control.Arrow.Trans,
-                       Control.Arrow.Writer,
-                       Control.Arrow.Utils,
-
-                       Control.Arrow.Abstract.Join,
-
-                       Control.Arrow.Transformer.Reader,
-                       Control.Arrow.Transformer.State,
-                       Control.Arrow.Transformer.Writer,
-                       Control.Arrow.Transformer.Cont,
-                       Control.Arrow.Transformer.Const,
-                       Control.Arrow.Transformer.Static,
-
-                       Control.Arrow.Transformer.Concrete.Environment,
-                       Control.Arrow.Transformer.Concrete.Except,
-                       Control.Arrow.Transformer.Concrete.Failure,
-                       Control.Arrow.Transformer.Concrete.Fixpoint,
-                       Control.Arrow.Transformer.Concrete.Store,
-                       Control.Arrow.Transformer.Concrete.Random,
-                       Control.Arrow.Transformer.Concrete.Trace,
-
-                       Control.Arrow.Transformer.Abstract.Completion,
-                       Control.Arrow.Transformer.Abstract.Environment,
-                       Control.Arrow.Transformer.Abstract.Contour,
-                       Control.Arrow.Transformer.Abstract.BoundedEnvironment,
-                       Control.Arrow.Transformer.Abstract.Failure,
-                       Control.Arrow.Transformer.Abstract.Except,
-                       -- Control.Arrow.Transformer.Abstract.GreatestFixPoint,
-                       Control.Arrow.Transformer.Abstract.Fixpoint,
-                       Control.Arrow.Transformer.Abstract.Powerset,
-                       Control.Arrow.Transformer.Abstract.Store,
-                       Control.Arrow.Transformer.Abstract.ReachingDefinitions
-                       -- Control.Arrow.Transformer.Abstract.LiveVariables
-
-  build-depends:       base,
-                       containers,
-                       hashable,
-                       mtl,
-                       random,
-                       text,
-                       unordered-containers
-  hs-source-dirs:      src/
-  default-language:    Haskell2010
-
-test-suite specs
-  type:              exitcode-stdio-1.0
-  ghc-options:       -Wall
-  hs-source-dirs:    test
-  main-is:           Spec.hs
-  build-depends:     base,
-                     hspec,
-                     sturdy-lib,
-                     hashable,
-                     unordered-containers,
-                     text
-  other-modules:     FiniteMapSpec,
-                     FixSpec,
-                     MapSpec,
-                     TraceSpec
-  default-language:  Haskell2010

pcf/package.yaml

+name:                sturdy-pcf
+version:             0.1.0.0
+license:             BSD3
+maintainer:          Sven Keidel <svenkeidel@gmail.com>
+category:            Language
+
+dependencies:
+  - base
+  - hashable
+  - mtl
+  - sturdy-lib
+  - text
+  - transformers
+  - unordered-containers
+
+library:
+  source-dirs:
+    - src
+
+  ghc-options: -Wall
+
+
+tests:
+  spec:
+    main: Spec.hs
+
+    source-dirs:
+      - test
+
+    ghc-options: -Wall
+
+    dependencies:
+      - sturdy-pcf
+      - hspec

pcf/src/SignAnalysis.hs

-{-# LANGUAGE Arrows #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE DeriveGeneric #-}
-{-# OPTIONS_GHC -fno-warn-orphans #-}
-module SignAnalysis where
-
-import           Prelude hiding (id)
-
-import           Control.Category
-import           Control.Arrow
-import           Control.Arrow.Fail
-import           Control.Arrow.Fix
-import           Control.Arrow.Environment
-
-import           Data.Error
-import           Data.Foldable (toList)
-import           Data.HashMap.Lazy (HashMap)
-import qualified Data.HashMap.Lazy as M
-import           Data.Hashable
-import           Data.Order
-import           Data.Powerset
-import qualified Data.Sign as Sign
-import           Data.Sign hiding (Bot,Top)
-import           Data.Text (Text)
-import           Data.Store (Store)
-
-import           GHC.Generics
-
-import           PCF (Expr)
-import           Shared
-
-data Closure = Closure Text Expr Env deriving (Eq,Show,Generic)
-data Val = Bot | NumVal Sign | ClosureVal (Pow Closure) | Top deriving (Eq,Show,Generic)
-type Env = M.HashMap Text Addr
-
-type Addr = Text
-type Interp = BoundedEnv Text Addr Val (ErrorArrow String (CacheArrow (HashMap Text Addr, Store Addr Val, Expr) (Error String (Store Addr Val, Val))))
-
-instance LowerBounded String where
-  bottom = "Program might not terminate"
-
-evalSign :: HashMap Text Val -> Expr -> Error String Val
-evalSign env e = runCacheArrow (runErrorArrow (runBoundedEnv eval)) (alloc,env,e)
-  where alloc = id
-
-instance IsVal Val Interp where
-  succ = proc s -> case s of
-    NumVal n -> returnA -< NumVal (n+1)
-    _ -> failA -< "Expected a number as argument for 'succ'"
-  pred = proc s -> case s of
-    NumVal n -> returnA -< NumVal (n-1)
-    _ -> failA -< "Expected a number as argument for 'pred'"
-  zero = arr $ const (NumVal 0)
-  ifZero f g = proc (v1, (x, y)) -> case v1 of
-    NumVal Zero -> f -< x
-    NumVal Sign.Top -> (f -< x) ⊔ (g -< y)
-    NumVal _ -> g -< y
-    _ -> failA -< "Expected a number as condition for 'ifZero'"
-
-instance IsClosure Val Env Interp where
-  closure = arr $ \(x, e, env) -> ClosureVal (return (Closure x e env))
-  applyClosure f = proc (fun, arg) -> case fun of
-    ClosureVal cls -> lubA (proc (Closure x body env) -> do
-      env' <- extendEnv -< (x,arg,env)
-      localEnv f -< (env', body))
-        -<< toList cls
-    _ -> failA -< "Expected a closure"
-
-instance PreOrd Val where
-  Bot ⊑ _ = True
-  _ ⊑ Top = True
-  NumVal n1 ⊑ NumVal n2 = n1 ⊑ n2
-  ClosureVal c1 ⊑ ClosureVal c2 = c1 ⊑ c2
-  _ ⊑ _ = False
-
-instance LowerBounded Val where
-  bottom = Bot
-
-instance Complete Val where
-  Bot ⊔ y = y
-  x ⊔ Bot = x
-  Top ⊔ _ = Top
-  _ ⊔ Top = Top
-  NumVal x ⊔ NumVal y = NumVal (x ⊔ y) 
-  ClosureVal x ⊔ ClosureVal y = ClosureVal (x ⊔ y) 
-  _ ⊔ _ = Top
-
-instance Hashable Closure
-instance Hashable Val

pcf/sturdy-pcf.cabal

-name:                sturdy-pcf
-version:             0.1.0.0
-license:             BSD3
-license-file:        LICENSE
-author:              Sven Keidel
-maintainer:          s.keidel@tudelft.nl
-category:            Language
-build-type:          Simple
-extra-source-files:
-cabal-version:       >=1.10
-
-library
-  ghc-options:       -Wall
-  exposed-modules:   Syntax,
-                     GenericInterpreter,
-                     ConcreteInterpreter,
-                     IntervalAnalysis
-                     -- SignAnalysis
-  build-depends:     base,
-                     hashable,
-                     mtl,
-                     sturdy-lib,
-                     text,
-                     transformers,
-                     unordered-containers
-  hs-source-dirs:    src
-  default-language:  Haskell2010
-
-test-suite specs
-  type:              exitcode-stdio-1.0
-  ghc-options:       -Wall
-  hs-source-dirs:    test
-  main-is:           Spec.hs
-  other-modules:     ConcreteSpec,
-                     IntervalAnalysisSpec,
-                     SignAnalysisSpec,
-                     SharedSpecs
-  build-depends:     base,
-                     hspec,
-                     mtl,
-                     sturdy-lib,
-                     sturdy-pcf,
-                     unordered-containers,
-                     text
-  default-language:  Haskell2010

stratego/case-studies/Main.hs

@@ -15,8 +15,8 @@ import           Pretty.Results
 
 import           Paths_sturdy_stratego
 
-import qualified Criterion.Measurement as CM
-import qualified Criterion.Types as CT
+import qualified Criterion as CM
+import qualified Criterion as CT
 
 import           Data.ATerm
 import           Data.Abstract.Error
@@ -35,7 +35,6 @@ import           Text.Printf
 -- | Runs the case studies.
 main :: IO ()
 main = do
-    CM.initializeTime
     prettyPrint H.ppHaskell =<< caseStudy (W.eval 5) "arrows" "desugar_arrow_0_0"
     prettyPrint H.ppHaskell =<< caseStudy (W.eval 5) "cca" "norm_0_0"
     prettyPrint P.ppPCF     =<< caseStudy (W.eval 5) "arith" "eval_0_0"
@@ -51,11 +50,6 @@ prettyPrint pprint res =
      then print $ ppResults pprint (toList res)
      else printf "Output ommited because the result set contains %d elements\n" (H.size res)
 
-measure :: String -> IO () -> IO ()
-measure analysisName action = do
-  (m,_) <- CM.measure (CT.nfIO action) 1
-  printf "- %s: %s\n" analysisName (CM.secs (CT.measCpuTime m))
-
 -- | Runs the given semantics on the given function within the given
 -- case study.
 caseStudy :: (Strat -> StratEnv -> W.TermEnv -> W.Term -> Terminating (W.Pow (F.Failure String (Error () (W.TermEnv,W.Term))))) -> String -> String -> IO (HashSet W.Term)
@@ -68,7 +62,7 @@ caseStudy eval name function = do
       let res = fromTerminating (error "non-terminating wildcard semantics") $ eval (Call (fromString function) [] []) (stratEnv module_) S.empty W.Wildcard
       let terms = H.fromList $ toList $ filterResults (toList res)
 
-      _ <- CM.measure (CT.nfIO (return terms)) 1
+      CT.benchmark (CT.nfIO (return terms))
       return terms
  where
    filterResults = fmap (\r -> case r of Success (_,t) -> t; SuccessOrFail _ (_,t) -> t; Fail _ -> error "")

stratego/package.yaml

+name:                sturdy-stratego
+version:             0.1.0.0
+license:             BSD3
+maintainer:          Sven Keidel <svenkeidel@gmail.com>
+category:            Language
+
+dependencies:
+  - base
+  - attoparsec
+  - containers
+  - deepseq
+  - fgl
+  - hashable
+  - mtl
+  - sturdy-lib
+  - text
+  - transformers
+  - tree-automata
+  - unordered-containers
+  - QuickCheck
+
+library:
+  source-dirs:
+    - src
+  ghc-options: -Wall -O2 -fprof-auto
+
+executables:
+  case-studies:
+    source-dirs:
+      - case-studies
+    main: Main.hs
+    dependencies:
+      - sturdy-stratego
+      - pretty
+      - vector
+      - criterion
+
+tests:
+  spec:
+    main: Spec.hs
+    source-dirs:
+      - test
+    dependencies:
+      - hspec
+      - sturdy-stratego

stratego/src/AbstractTypedSemantics.hs

-{-# LANGUAGE Arrows #-}
-{-# LANGUAGE OverloadedStrings #-}
-{-# LANGUAGE FlexibleContexts #-}
-{-# LANGUAGE FlexibleInstances #-}
-{-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE PatternSynonyms #-}
-module AbstractTypedSemantics where
-
-import           Prelude hiding (fail)
-
-import           InterpreterArrow
-import           WildcardSemantics hiding (Term(..),TermEnv)
-import           Sort
-import           Signature
-import qualified Signature as Sig
-import           Syntax(Strat,StratEnv,Module,signature,stratEnv)
-import           Utils
-
-import           Control.Arrow hiding ((<+>))
-import           Control.Arrow.Append
-import           Control.Arrow.Try
-
-import           Data.Constructor
-import           Data.Hashable
-import           Data.Order hiding (lub)
-import           Data.PowersetResult
-import qualified Data.Term as T
-import           Data.Term(HasTerm(..),TermF)
-import           Data.TermEnv
-import           Data.Text(Text,pack)
-import           Data.TypedResult(TypeError(..))
-import           Data.Complete (Complete)
-import qualified Data.Complete as C
-