diff --git a/.gitignore b/.gitignore
index f393974..eb5c067 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
 .ghc*
 /github_token.txt
-/nixpkgs-update.nix
 /packages-to-update.txt
 /result
 /result-doc
diff --git a/nixpkgs-update.nix b/nixpkgs-update.nix
new file mode 100644
index 0000000..325b561
--- /dev/null
+++ b/nixpkgs-update.nix
@@ -0,0 +1,53 @@
+{ mkDerivation, aeson, base, bytestring, conduit, containers
+, cryptohash-sha256, directory, doctest, errors, filepath, github
+, hspec, hspec-discover, http-client, http-client-tls, http-conduit
+, http-types, iso8601-time, lib, lifted-base, mtl
+, neat-interpolation, optparse-applicative, parsec, parsers
+, partial-order, polysemy, polysemy-plugin, regex-applicative-text
+, servant, servant-client, sqlite-simple, template-haskell
+, temporary, text, th-env, time, transformers, typed-process, unix
+, unordered-containers, vector, versions, xdg-basedir, zlib
+}:
+mkDerivation {
+  pname = "nixpkgs-update";
+  version = "0.4.0";
+  src = ./.;
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    aeson base bytestring conduit containers cryptohash-sha256
+    directory errors filepath github http-client http-client-tls
+    http-conduit http-types iso8601-time lifted-base mtl
+    neat-interpolation optparse-applicative parsec parsers
+    partial-order polysemy polysemy-plugin regex-applicative-text
+    servant servant-client sqlite-simple template-haskell temporary
+    text th-env time transformers typed-process unix
+    unordered-containers vector versions xdg-basedir zlib
+  ];
+  executableHaskellDepends = [
+    aeson base bytestring conduit containers cryptohash-sha256
+    directory errors filepath github http-client http-client-tls
+    http-conduit http-types iso8601-time lifted-base mtl
+    neat-interpolation optparse-applicative parsec parsers
+    partial-order polysemy polysemy-plugin regex-applicative-text
+    servant servant-client sqlite-simple template-haskell temporary
+    text th-env time transformers typed-process unix
+    unordered-containers vector versions xdg-basedir zlib
+  ];
+  testHaskellDepends = [
+    aeson base bytestring conduit containers cryptohash-sha256
+    directory doctest errors filepath github hspec hspec-discover
+    http-client http-client-tls http-conduit http-types iso8601-time
+    lifted-base mtl neat-interpolation optparse-applicative parsec
+    parsers partial-order polysemy polysemy-plugin
+    regex-applicative-text servant servant-client sqlite-simple
+    template-haskell temporary text th-env time transformers
+    typed-process unix unordered-containers vector versions xdg-basedir
+    zlib
+  ];
+  testToolDepends = [ hspec-discover ];
+  homepage = "https://github.com/ryantm/nixpkgs-update#readme";
+  description = "Tool for semi-automatic updating of nixpkgs repository";
+  license = lib.licenses.cc0;
+  mainProgram = "nixpkgs-update";
+}
diff --git a/pkgs/default.nix b/pkgs/default.nix
index ba9d1d7..0c21131 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -31,13 +31,14 @@ let
     overrides = _: haskellPackages: {
       polysemy-plugin = pkgs.haskell.lib.dontCheck haskellPackages.polysemy-plugin;
       polysemy = pkgs.haskell.lib.dontCheck haskellPackages.polysemy;
+      http-api-data = pkgs.haskell.lib.doJailbreak haskellPackages.http-api-data;
       nixpkgs-update =
         pkgs.haskell.lib.justStaticExecutables (
           pkgs.haskell.lib.failOnAllWarnings (
             pkgs.haskell.lib.disableExecutableProfiling (
               pkgs.haskell.lib.disableLibraryProfiling (
                 pkgs.haskell.lib.generateOptparseApplicativeCompletion "nixpkgs-update" (
-                  (haskellPackages.developPackage developPackageAttrs).overrideAttrs drvAttrs
+                  (haskellPackages.callPackage ../nixpkgs-update.nix {}).overrideAttrs drvAttrs
                 )
               )
             )
@@ -50,6 +51,7 @@ let
     nativeBuildInputs = with pkgs; [
       cabal-install
       ghcid
+      haskellPackages.cabal2nix
     ];
     packages = ps: [ ps.nixpkgs-update ];
     shellHook = ''
diff --git a/pkgs/nixpkgs-update.nix b/pkgs/nixpkgs-update.nix
new file mode 100644
index 0000000..325b561
--- /dev/null
+++ b/pkgs/nixpkgs-update.nix
@@ -0,0 +1,53 @@
+{ mkDerivation, aeson, base, bytestring, conduit, containers
+, cryptohash-sha256, directory, doctest, errors, filepath, github
+, hspec, hspec-discover, http-client, http-client-tls, http-conduit
+, http-types, iso8601-time, lib, lifted-base, mtl
+, neat-interpolation, optparse-applicative, parsec, parsers
+, partial-order, polysemy, polysemy-plugin, regex-applicative-text
+, servant, servant-client, sqlite-simple, template-haskell
+, temporary, text, th-env, time, transformers, typed-process, unix
+, unordered-containers, vector, versions, xdg-basedir, zlib
+}:
+mkDerivation {
+  pname = "nixpkgs-update";
+  version = "0.4.0";
+  src = ./.;
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    aeson base bytestring conduit containers cryptohash-sha256
+    directory errors filepath github http-client http-client-tls
+    http-conduit http-types iso8601-time lifted-base mtl
+    neat-interpolation optparse-applicative parsec parsers
+    partial-order polysemy polysemy-plugin regex-applicative-text
+    servant servant-client sqlite-simple template-haskell temporary
+    text th-env time transformers typed-process unix
+    unordered-containers vector versions xdg-basedir zlib
+  ];
+  executableHaskellDepends = [
+    aeson base bytestring conduit containers cryptohash-sha256
+    directory errors filepath github http-client http-client-tls
+    http-conduit http-types iso8601-time lifted-base mtl
+    neat-interpolation optparse-applicative parsec parsers
+    partial-order polysemy polysemy-plugin regex-applicative-text
+    servant servant-client sqlite-simple template-haskell temporary
+    text th-env time transformers typed-process unix
+    unordered-containers vector versions xdg-basedir zlib
+  ];
+  testHaskellDepends = [
+    aeson base bytestring conduit containers cryptohash-sha256
+    directory doctest errors filepath github hspec hspec-discover
+    http-client http-client-tls http-conduit http-types iso8601-time
+    lifted-base mtl neat-interpolation optparse-applicative parsec
+    parsers partial-order polysemy polysemy-plugin
+    regex-applicative-text servant servant-client sqlite-simple
+    template-haskell temporary text th-env time transformers
+    typed-process unix unordered-containers vector versions xdg-basedir
+    zlib
+  ];
+  testToolDepends = [ hspec-discover ];
+  homepage = "https://github.com/ryantm/nixpkgs-update#readme";
+  description = "Tool for semi-automatic updating of nixpkgs repository";
+  license = lib.licenses.cc0;
+  mainProgram = "nixpkgs-update";
+}