diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,10 +1,15 @@
 # Change Log
 
+## [1.2.0.1] - 2019-05-22
+
+- Loosen upper bounds on dependencies
+
 ## [1.2.0.0] - 2018-12-05
 
 - Add ``Hashable`` instances
 - Generalize ``concatMap``
 - Various code and documentation cleanup
+- Add ``SomeSized`` pattern
 
 ## [1.1.1.0] - 2018-11-13
 
diff --git a/default.nix b/default.nix
new file mode 100644
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,28 @@
+{ pkgs ? import <nixpkgs> {}
+, compiler ? "ghc864"
+}:
+
+let src = pkgs.nix-gitignore.gitignoreSource [] ./.;
+
+    # Any overrides we require to the specified haskell package set
+    haskellPackages = with pkgs.haskell.lib;
+      pkgs.haskell.packages.${compiler}.override {
+      overrides = self: super: {
+      };
+    };
+
+    # Any packages to appear in the environment provisioned by nix-shell
+    extraEnvPackages = with haskellPackages; [
+    ];
+
+    # Generate a haskell derivation using the cabal2nix tool on `package.yaml`
+    drv = haskellPackages.callCabal2nix "" src {};
+
+    # Insert the extra environment packages into the environment generated by
+    # cabal2nix
+    envWithExtras = pkgs.lib.overrideDerivation drv.env (attrs: {
+      buildInputs = attrs.buildInputs ++ extraEnvPackages;
+    });
+
+in
+  drv // { env = envWithExtras; }
diff --git a/readme.md b/readme.md
--- a/readme.md
+++ b/readme.md
@@ -1,7 +1,7 @@
 # ``vector-sized`` [![Hackage][hackage-shield]][hackage]
 
 This package exports a newtype tagging the vectors from the [``vector``][1]
-package with a type-level natural representing their sized. It also exports
+package with a type-level natural representing their size. It also exports
 functions from ``vector`` whose size can be determined ahead of time,
 appropriately retyped.
 
@@ -41,5 +41,5 @@
 [5]: https://hackage.haskell.org/package/vector-0.12.0.1/docs/Data-Vector-Generic.html#t:Vector  
 [6]: https://hackage.haskell.org/package/fixed-vector
 [7]: https://github.com/expipiplus1/vulkan/pull/1
-[hackage-shield]: https://img.shields.io/badge/hackage-v1.1.10-blue.svg
+[hackage-shield]: https://img.shields.io/badge/hackage-v1.2.0.0-blue.svg 
 [hackage]: http://hackage.haskell.org/package/vector-sized
diff --git a/shell.nix b/shell.nix
new file mode 100644
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,5 @@
+{ pkgs ? import <nixpkgs> {}
+, compiler ? "ghc864"
+}:
+
+(import ./default.nix { inherit pkgs compiler; }).env
diff --git a/vector-sized.cabal b/vector-sized.cabal
--- a/vector-sized.cabal
+++ b/vector-sized.cabal
@@ -1,46 +1,59 @@
-name:                vector-sized
-version:             1.2.0.0
-synopsis:            Size tagged vectors
-description:         Please see README.md
-homepage:            http://github.com/expipiplus1/vector-sized#readme
-license:             BSD3
-license-file:        LICENSE
-author:              Joe Hermaszewski
-maintainer:          whats.our.vector.victor@monoid.al
-copyright:           2016 Joe Hermaszewski
-category:            Data
-build-type:          Simple
-extra-source-files:  readme.md
-                   , changelog.md
-cabal-version:       >=1.10
+-- This file has been generated from package.yaml by hpack version 0.27.0.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 9e10d73204f28676f1b2ea3f9f268f3bc030536ef316caacf208ba554a7d0e14
 
-library
-  hs-source-dirs:      src
-  exposed-modules:     Data.Vector.Sized
-                     , Data.Vector.Generic.Sized
-                     , Data.Vector.Generic.Sized.Internal
-                     , Data.Vector.Storable.Sized
-                     , Data.Vector.Mutable.Sized
-                     , Data.Vector.Generic.Mutable.Sized
-                     , Data.Vector.Storable.Mutable.Sized
-                     , Data.Vector.Generic.Mutable.Sized.Internal
-                     , Data.Vector.Unboxed.Sized
-                     , Data.Vector.Unboxed.Mutable.Sized
-  build-depends:       base >= 4.9 && < 5
-                     , vector >= 0.11 && < 0.13
-                     , deepseq >= 1.1 && < 1.5
-                     , finite-typelits >= 0.1
-                     , primitive >= 0.5 && < 0.7
-                     , indexed-list-literals >= 0.2.0.0
-                     , adjunctions >= 4.3 && < 4.5
-                     , distributive >= 0.5 && < 0.7
-                     , comonad >=4 && <6
-                     , hashable >= 1.2.4.0 && < 1.3
-  default-language:    Haskell2010
+name:           vector-sized
+version:        1.2.0.1
+synopsis:       Size tagged vectors
+description:    Please see README.md
+category:       Data
+homepage:       https://github.com/expipiplus1/vector-sized#readme
+bug-reports:    https://github.com/expipiplus1/vector-sized/issues
+author:         Joe Hermaszewski
+maintainer:     whats.our.vector.victor@monoid.al
+copyright:      2016 Joe Hermaszewski
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+cabal-version:  >= 1.10
 
-  -- if impl(ghc >= 8.6)
-  --   default-extensions: NoStarIsType
+extra-source-files:
+    changelog.md
+    default.nix
+    readme.md
+    shell.nix
 
 source-repository head
-  type:     git
+  type: git
   location: https://github.com/expipiplus1/vector-sized
+
+library
+  exposed-modules:
+      Data.Vector.Sized
+      Data.Vector.Generic.Sized
+      Data.Vector.Generic.Sized.Internal
+      Data.Vector.Storable.Sized
+      Data.Vector.Mutable.Sized
+      Data.Vector.Generic.Mutable.Sized
+      Data.Vector.Storable.Mutable.Sized
+      Data.Vector.Generic.Mutable.Sized.Internal
+      Data.Vector.Unboxed.Sized
+      Data.Vector.Unboxed.Mutable.Sized
+  other-modules:
+      Paths_vector_sized
+  hs-source-dirs:
+      src
+  build-depends:
+      adjunctions >=4.3 && <4.5
+    , base >=4.9 && <5
+    , comonad >=4 && <6
+    , deepseq >=1.1 && <1.5
+    , distributive >=0.5 && <0.7
+    , finite-typelits >=0.1
+    , hashable >=1.2.4.0 && <1.3
+    , indexed-list-literals >=0.2.0.0
+    , primitive >=0.5 && <0.8
+    , vector >=0.11 && <0.13
+  default-language: Haskell2010