diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/Setup.lhs b/Setup.lhs
deleted file mode 100644
--- a/Setup.lhs
+++ /dev/null
@@ -1,44 +0,0 @@
-#!/usr/bin/env runhaskell
-\begin{code}
-{-# OPTIONS_GHC -Wall #-}
-module Main (main) where
-
-import Data.List ( nub )
-import Data.Version ( showVersion )
-import Distribution.Package ( PackageName(PackageName), PackageId, InstalledPackageId, packageVersion, packageName )
-import Distribution.PackageDescription ( PackageDescription(), TestSuite(..) )
-import Distribution.Simple ( defaultMainWithHooks, UserHooks(..), simpleUserHooks )
-import Distribution.Simple.Utils ( rewriteFile, createDirectoryIfMissingVerbose )
-import Distribution.Simple.BuildPaths ( autogenModulesDir )
-import Distribution.Simple.Setup ( BuildFlags(buildVerbosity), fromFlag )
-import Distribution.Simple.LocalBuildInfo ( withLibLBI, withTestLBI, LocalBuildInfo(), ComponentLocalBuildInfo(componentPackageDeps) )
-import Distribution.Verbosity ( Verbosity )
-import System.FilePath ( (</>) )
-
-main :: IO ()
-main = defaultMainWithHooks simpleUserHooks
-  { buildHook = \pkg lbi hooks flags -> do
-     generateBuildModule (fromFlag (buildVerbosity flags)) pkg lbi
-     buildHook simpleUserHooks pkg lbi hooks flags
-  }
-
-generateBuildModule :: Verbosity -> PackageDescription -> LocalBuildInfo -> IO ()
-generateBuildModule verbosity pkg lbi = do
-  let dir = autogenModulesDir lbi
-  createDirectoryIfMissingVerbose verbosity True dir
-  withLibLBI pkg lbi $ \_ libcfg -> do
-    withTestLBI pkg lbi $ \suite suitecfg -> do
-      rewriteFile (dir </> "Build_" ++ testName suite ++ ".hs") $ unlines
-        [ "module Build_" ++ testName suite ++ " where"
-        , "deps :: [String]"
-        , "deps = " ++ (show $ formatdeps (testDeps libcfg suitecfg))
-        ]
-  where
-    formatdeps = map (formatone . snd)
-    formatone p = case packageName p of
-      PackageName n -> n ++ "-" ++ showVersion (packageVersion p)
-
-testDeps :: ComponentLocalBuildInfo -> ComponentLocalBuildInfo -> [(InstalledPackageId, PackageId)]
-testDeps xs ys = nub $ componentPackageDeps xs ++ componentPackageDeps ys
-
-\end{code}
diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+0.0.9
+
+* Use aeson-1.0.
+* Add nix build.
+
 0.0.8
 
 * No significant changes.
diff --git a/src/Data/Aviation/Stratux/Websockets.hs b/src/Data/Aviation/Stratux/Websockets.hs
--- a/src/Data/Aviation/Stratux/Websockets.hs
+++ b/src/Data/Aviation/Stratux/Websockets.hs
@@ -1,3 +1,5 @@
+{-# LANGUAGE NoImplicitPrelude #-}
+
 module Data.Aviation.Stratux.Websockets(
   WSConnectionIO
 , decodeWith
diff --git a/stratux-websockets.cabal b/stratux-websockets.cabal
--- a/stratux-websockets.cabal
+++ b/stratux-websockets.cabal
@@ -1,5 +1,5 @@
 name:               stratux-websockets
-version:            0.0.9
+version:            0.0.10
 license:            BSD3
 license-file:       LICENCE
 author:             Tony Morris <ʇǝu˙sıɹɹoɯʇ@ןןǝʞsɐɥ>
@@ -11,23 +11,20 @@
 homepage:           https://github.com/tonymorris/stratux-websockets
 bug-reports:        https://github.com/tonymorris/stratux-websockets/issues
 cabal-version:      >= 1.10
-build-type:         Custom
+build-type:         Simple
 extra-source-files: changelog.md
 
 source-repository   head
   type:             git
   location:         git@github.com:tonymorris/stratux-websockets.git
 
-flag                small_base
-  description:      Choose the new, split-up base package.
-
 library
   default-language:
                     Haskell2010
 
   build-depends:
-                      base < 5 && >= 4
-                    , stratux-types >= 0.0.9 && < 0.1
+                      base >= 4 && < 6
+                    , stratux-types >= 0.0.10 && < 0.1
                     , websockets >= 0.9 && < 1.0
                     , transformers >= 0.4 && < 1.0
                     , aeson >= 1.0 && < 1.1
@@ -46,28 +43,3 @@
 
   exposed-modules:
                     Data.Aviation.Stratux.Websockets                  
-
-test-suite doctests
-  type:
-                    exitcode-stdio-1.0
-
-  main-is:
-                    doctests.hs
-
-  default-language:
-                    Haskell2010
-
-  build-depends:
-                      base < 5 && >= 3
-                    , doctest >= 0.9.7
-                    , filepath >= 1.3
-                    , directory >= 1.1
-                    , QuickCheck >= 2.0
-                    , template-haskell >= 2.8
-
-  ghc-options:
-                    -Wall
-                    -threaded
-
-  hs-source-dirs:
-                    test
diff --git a/test/doctests.hs b/test/doctests.hs
deleted file mode 100644
--- a/test/doctests.hs
+++ /dev/null
@@ -1,32 +0,0 @@
-module Main where
-
-import Build_doctests (deps)
-import Control.Applicative
-import Control.Monad
-import Data.List
-import System.Directory
-import System.FilePath
-import Test.DocTest
-
-main ::
-  IO ()
-main =
-  getSources >>= \sources -> doctest $
-      "-isrc"
-    : "-idist/build/autogen"
-    : "-optP-include"
-    : "-optPdist/build/autogen/cabal_macros.h"
-    : "-hide-all-packages"
-    : map ("-package="++) deps ++ sources
-
-getSources :: IO [FilePath]
-getSources = filter (isSuffixOf ".hs") <$> go "src"
-  where
-    go dir = do
-      (dirs, files) <- getFilesAndDirectories dir
-      (files ++) . concat <$> mapM go dirs
-
-getFilesAndDirectories :: FilePath -> IO ([FilePath], [FilePath])
-getFilesAndDirectories dir = do
-  c <- map (dir </>) . filter (`notElem` ["..", "."]) <$> getDirectoryContents dir
-  (,) <$> filterM doesDirectoryExist c <*> filterM doesFileExist c