diff --git a/dhall-nix.cabal b/dhall-nix.cabal
--- a/dhall-nix.cabal
+++ b/dhall-nix.cabal
@@ -1,5 +1,5 @@
 Name: dhall-nix
-Version: 1.0.10
+Version: 1.1.0
 Cabal-Version: >=1.8.0.2
 Build-Type: Simple
 Tested-With: GHC == 8.0.1
@@ -27,15 +27,17 @@
 Library
     Hs-Source-Dirs: src
     Build-Depends:
-        base               >= 4.8.0.0  && < 5   ,
-        containers                        < 0.6 ,
-        data-fix                          < 0.3 ,
-        dhall              >= 1.9.0    && < 1.10,
-        hnix               >= 0.3.4    && < 0.4 ,
-        neat-interpolation                < 0.4 ,
-        text               >= 0.8.0.0  && < 1.3 ,
-        text-format                       < 0.4 ,
-        vector             >= 0.3      && < 0.13
+        base                      >= 4.8.0.0 && < 5   ,
+        containers                              < 0.6 ,
+        data-fix                                < 0.3 ,
+        dhall                     >= 1.10.0  && < 1.11,
+        hnix                      >= 0.3.4   && < 0.4 ,
+        insert-ordered-containers >= 0.1.0.1 && < 0.3 ,
+        neat-interpolation                      < 0.4 ,
+        scientific                              < 0.4 ,
+        text                      >= 0.8.0.0 && < 1.3 ,
+        text-format                             < 0.4 ,
+        vector                    >= 0.3     && < 0.13
     Exposed-Modules:
         Dhall.Nix
     GHC-Options: -Wall
@@ -48,7 +50,7 @@
         dhall                               ,
         dhall-nix                           ,
         hnix                                ,
-        optparse-generic >= 1.1.1   && < 1.3,
+        optparse-generic >= 1.1.1   && < 1.4,
         text                                ,
         trifecta         >= 1.0     && < 1.8
     GHC-Options: -Wall
diff --git a/src/Dhall/Nix.hs b/src/Dhall/Nix.hs
--- a/src/Dhall/Nix.hs
+++ b/src/Dhall/Nix.hs
@@ -94,6 +94,7 @@
 import Control.Exception (Exception)
 import Data.Foldable (toList)
 import Data.Fix (Fix(..))
+import Data.Scientific (Scientific)
 import Data.Typeable (Typeable)
 import Dhall.Core (Chunks(..), Const(..), Expr(..), Var(..))
 import Dhall.TypeCheck (X(..))
@@ -109,6 +110,7 @@
     , ParamSet(..)
     )
 
+import qualified Data.HashMap.Strict.InsOrd
 import qualified Data.Map
 import qualified Data.Text
 import qualified Data.Text.Buildable
@@ -124,7 +126,7 @@
 data CompileError
     = CannotReferenceShadowedVariable Var
     -- ^ Nix does not provide a way to reference a shadowed variable
-    | NoDoubles Double
+    | NoDoubles Scientific
     -- ^ Nix does not provide a way to represent floating point values
     | UnexpectedConstructorsKeyword
     -- ^ The @constructors@ keyword is not yet supported
@@ -429,7 +431,7 @@
     loop (RecordLit a) = do
         a' <- traverse loop a
         let a'' = do
-                (k, v) <- Data.Map.toAscList a'
+                (k, v) <- Data.HashMap.Strict.InsOrd.toList a'
                 let k' = Data.Text.Lazy.toStrict k
                 return (NamedVar [StaticKey k'] v)
         return (Fix (NSet a''))
@@ -438,7 +440,7 @@
         v' <- loop v
         let k'   = Data.Text.Lazy.toStrict k
         let e0   = do
-                k'' <- k : toList (Data.Map.keysSet kts)
+                k'' <- k : Data.HashMap.Strict.InsOrd.keys kts
                 return (Data.Text.Lazy.toStrict k'', Nothing)
         let e1   = Data.Map.fromAscList e0
         let e2   = Fix (NApp (Fix (NSym k')) v')