DELETED default.nix
Index: default.nix
==================================================================
--- default.nix
+++ default.nix
@@ -1,9 +0,0 @@
-with import <nixpkgs> {};
-stdenv.mkDerivation rec {
-  name = "env";
-  env = buildEnv { name = name; paths = buildInputs; };
-  buildInputs = [
-    haskellPackages.pandoc
-    mkdocs
-  ];
-}

ADDED   shell.nix
Index: shell.nix
==================================================================
--- shell.nix
+++ shell.nix
@@ -0,0 +1,9 @@
+with import <nixpkgs> {};
+stdenv.mkDerivation rec {
+  name = "env";
+  env = buildEnv { name = name; paths = buildInputs; };
+  buildInputs = [
+    haskellPackages.pandoc
+    mkdocs
+  ];
+}