diff --git a/default.nix b/default.nix
index 473778c..bda28df 100644
--- a/default.nix
+++ b/default.nix
@@ -1,2 +1,34 @@
 { pkgs ? import ./nix {} }:
-pkgs.callPackage ./nix/packages.nix {}
+rec
+{ niv = pkgs.snack-lib.executable ./package.yaml;
+  readme = pkgs.writeText "README.md"
+    (with
+      { template = builtins.readFile ./README.tpl.md;
+        niv_help = builtins.readFile
+          (pkgs.runCommand "niv_help" { buildInputs = [ niv ]; }
+            "niv --help > $out"
+          );
+        niv_cmd_help = cmd: builtins.readFile
+          (pkgs.runCommand "niv_${cmd}_help" { buildInputs = [ niv ]; }
+            "niv ${cmd} --help > $out"
+          );
+        cmds = [ "add" "update" "drop" "init" "show" ];
+      };
+    pkgs.lib.replaceStrings
+      ([ "replace_niv_help" ] ++ (map (cmd: "replace_niv_${cmd}_help") cmds))
+      ([ niv_help ] ++ (map niv_cmd_help cmds))
+      template
+    );
+  readme-test = pkgs.runCommand "README-test" {}
+    ''
+      err() {
+        echo
+        echo -e "\e[31mERR\e[0m: README.md out of date"
+        echo -e "please run \e[1m./script/gen\e[0m"
+        echo
+        exit 1
+      }
+
+      diff ${./README.md} ${readme} && echo dummy > $out || err ;
+    '';
+}
diff --git a/nix/packages.nix b/nix/packages.nix
deleted file mode 100644
index 0439fbe..0000000
--- a/nix/packages.nix
+++ /dev/null
@@ -1,38 +0,0 @@
-{ writeText
-, runCommand
-, lib
-, snack-lib
-}:
-rec
-{ niv = snack-lib.executable ../package.yaml;
-  readme = writeText "README.md"
-    (with
-      { template = builtins.readFile ../README.tpl.md;
-        niv_help = builtins.readFile
-          (runCommand "niv_help" { buildInputs = [ niv ]; }
-            "niv --help > $out"
-          );
-        niv_cmd_help = cmd: builtins.readFile
-          (runCommand "niv_${cmd}_help" { buildInputs = [ niv ]; }
-            "niv ${cmd} --help > $out"
-          );
-        cmds = [ "add" "update" "drop" "init" "show" ];
-      };
-    lib.replaceStrings
-      ([ "replace_niv_help" ] ++ (map (cmd: "replace_niv_${cmd}_help") cmds))
-      ([ niv_help ] ++ (map niv_cmd_help cmds))
-      template
-    );
-  readme-test = runCommand "README-test" {}
-    ''
-      err() {
-        echo
-        echo -e "\e[31mERR\e[0m: README.md out of date"
-        echo -e "please run \e[1m./script/gen\e[0m"
-        echo
-        exit 1
-      }
-
-      diff ${../README.md} ${readme} && echo dummy > $out || err ;
-    '';
-}