diff --git a/.nix/brick.nix b/.nix/brick.nix
index 6b4eef90..1aae0f4e 100644
--- a/.nix/brick.nix
+++ b/.nix/brick.nix
@@ -1,8 +1,8 @@
 { mkDerivation, base, bimap, bytestring, config-ini, containers
-, contravariant, data-clist, deepseq, directory, exceptions
-, filepath, lib, microlens, microlens-mtl, microlens-th, mtl
-, QuickCheck, stm, template-haskell, text, text-zipper, unix-compat
-, vector, vty, word-wrap
+, data-clist, deepseq, directory, exceptions, filepath, lib
+, microlens, microlens-mtl, microlens-th, mtl, QuickCheck, stm
+, template-haskell, text, text-zipper, unix-compat, vector, vty
+, vty-crossplatform, vty-unix, word-wrap
 }:
 mkDerivation {
   pname = "brick";
@@ -10,14 +10,15 @@ mkDerivation {
   sha256 = "30280d6f7130eb3e6cbf5a55465a06a825169cb536d3b2e91883aec23532b31e";
   isLibrary = true;
   isExecutable = true;
+  doCheck = false;
   libraryHaskellDepends = [
-    base bimap bytestring config-ini containers contravariant
-    data-clist deepseq directory exceptions filepath microlens
-    microlens-mtl microlens-th mtl stm template-haskell text
-    text-zipper unix-compat vector vty word-wrap
+    base bimap bytestring config-ini containers data-clist deepseq
+    directory exceptions filepath microlens microlens-mtl microlens-th
+    mtl stm template-haskell text text-zipper unix-compat vector vty
+    vty-crossplatform word-wrap
   ];
   testHaskellDepends = [
-    base containers microlens QuickCheck vector vty
+    base containers microlens QuickCheck vector vty vty-unix
   ];
   homepage = "https://github.com/jtdaugherty/brick/";
   description = "A declarative terminal user interface library";
diff --git a/.nix/overlays.nix b/.nix/overlays.nix
index 80ed58b5..642590b4 100644
--- a/.nix/overlays.nix
+++ b/.nix/overlays.nix
@@ -10,6 +10,8 @@ let
         text-zipper = hsuper.callPackage ./text-zipper.nix { };
         bimap = hsuper.callPackage ./bimap.nix { };
         vty = hsuper.callPackage ./vty.nix { };
+        vty-unix = hsuper.callPackage ./vty-unix.nix { };
+        vty-crossplatform = hsuper.callPackage ./vty-crossplatform.nix { };
         notmuch = hsuper.callPackage ./hsnotmuch.nix {
           notmuch = self.pkgs.notmuch;
           talloc = self.pkgs.talloc;
diff --git a/.nix/vty-crossplatform.nix b/.nix/vty-crossplatform.nix
new file mode 100644
index 00000000..c9690cd3
--- /dev/null
+++ b/.nix/vty-crossplatform.nix
@@ -0,0 +1,11 @@
+{ mkDerivation, base, lib, vty, vty-unix }:
+mkDerivation {
+  pname = "vty-crossplatform";
+  version = "0.4.0.0";
+  sha256 = "35e5433512b883e83aa8bb8c3475221174445a87e51f162b2ce07f9cf1eb3c1a";
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [ base vty vty-unix ];
+  description = "Cross-platform support for Vty";
+  license = lib.licenses.bsd3;
+}
diff --git a/.nix/vty-unix.nix b/.nix/vty-unix.nix
new file mode 100644
index 00000000..369d7149
--- /dev/null
+++ b/.nix/vty-unix.nix
@@ -0,0 +1,21 @@
+{ mkDerivation, ansi-terminal, base, blaze-builder, bytestring
+, containers, deepseq, lib, microlens, microlens-mtl, microlens-th
+, mtl, parsec, stm, terminfo, transformers, unix, utf8-string
+, vector, vty
+}:
+mkDerivation {
+  pname = "vty-unix";
+  version = "0.2.0.0";
+  sha256 = "c2ab67e09edc4bade04e269adc059320e83f68b31e428d11a69b20c4f161ddc1";
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    base blaze-builder bytestring containers deepseq microlens
+    microlens-mtl microlens-th mtl parsec stm terminfo transformers
+    unix utf8-string vector vty
+  ];
+  executableHaskellDepends = [ ansi-terminal base vty ];
+  description = "Unix backend for Vty";
+  license = lib.licenses.bsd3;
+  mainProgram = "vty-unix-build-width-table";
+}
diff --git a/.nix/vty.nix b/.nix/vty.nix
index 68ecbc75..c37407bf 100644
--- a/.nix/vty.nix
+++ b/.nix/vty.nix
@@ -1,31 +1,16 @@
-{ mkDerivation, ansi-terminal, base, binary, blaze-builder
-, bytestring, Cabal, containers, deepseq, directory, filepath
-, hashable, HUnit, lib, microlens, microlens-mtl, microlens-th, mtl
-, parallel, parsec, QuickCheck, quickcheck-assertions, random
-, smallcheck, stm, string-qq, terminfo, test-framework
-, test-framework-hunit, test-framework-smallcheck, text
-, transformers, unix, utf8-string, vector
+{ mkDerivation, base, binary, blaze-builder, bytestring, deepseq
+, directory, filepath, lib, microlens, microlens-mtl, microlens-th
+, mtl, parsec, stm, text, utf8-string, vector
 }:
 mkDerivation {
   pname = "vty";
   version = "6.1";
   sha256 = "2fc64b7d09f16bce9c6456e234e6aca3a86be9a40f360435499fc087b94f7bd6";
-  isLibrary = true;
-  isExecutable = true;
+  revision = "1";
+  editedCabalFile = "1wy4vfyr4nbb8ycfx80yrp59ggigcbfrsh5w1qk768y04d114kaj";
   libraryHaskellDepends = [
-    ansi-terminal base binary blaze-builder bytestring containers
-    deepseq directory filepath hashable microlens microlens-mtl
-    microlens-th mtl parallel parsec stm terminfo text transformers
-    unix utf8-string vector
-  ];
-  executableHaskellDepends = [
-    base containers directory filepath microlens microlens-mtl mtl
-  ];
-  testHaskellDepends = [
-    base blaze-builder bytestring Cabal containers deepseq HUnit
-    microlens microlens-mtl mtl QuickCheck quickcheck-assertions random
-    smallcheck stm string-qq terminfo test-framework
-    test-framework-hunit test-framework-smallcheck text unix
+    base binary blaze-builder bytestring deepseq directory filepath
+    microlens microlens-mtl microlens-th mtl parsec stm text
     utf8-string vector
   ];
   homepage = "https://github.com/jtdaugherty/vty";