diff --git a/pkgs/development/libraries/haskell/HTTP/4000.0.6.nix b/pkgs/development/libraries/haskell/HTTP/4000.0.6.nix
deleted file mode 100644
index a41dd3c25dc4..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.0.6.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, mtl, network, parsec }:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.0.6";
-  sha256 = "75af1ac4dc21b10c8a1a54a33179ea822e591887bab7278360a3d6b38304d39b";
-  buildDepends = [ mtl network parsec ];
-  doCheck = false;
-  meta = {
-    homepage = "http://projects.haskell.org/http/";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.0.9.nix b/pkgs/development/libraries/haskell/HTTP/4000.0.9.nix
deleted file mode 100644
index e530452b08c3..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.0.9.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, mtl, network, parsec }:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.0.9";
-  sha256 = "1e2b4a8b782ad1417c8755bb0d248851bc142b351366ed460e07f2945a5e95ba";
-  buildDepends = [ mtl network parsec ];
-  doCheck = false;
-  meta = {
-    homepage = "http://projects.haskell.org/http/";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.1.1.nix b/pkgs/development/libraries/haskell/HTTP/4000.1.1.nix
deleted file mode 100644
index 76356134589e..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.1.1.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, mtl, network, parsec }:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.1.1";
-  sha256 = "09khx5fb673a0d7m3bl39xjdxvc60m52rmm4865cha2mby0zidy3";
-  buildDepends = [ mtl network parsec ];
-  doCheck = false;
-  meta = {
-    homepage = "http://projects.haskell.org/http/";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.1.2.nix b/pkgs/development/libraries/haskell/HTTP/4000.1.2.nix
deleted file mode 100644
index 344a86a0da88..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.1.2.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, mtl, network, parsec }:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.1.2";
-  sha256 = "19vcy8xinrvn01caly6sg1p1yvbbf7nwq10kxmnwqssnl4h5cwn8";
-  buildDepends = [ mtl network parsec ];
-  doCheck = false;
-  meta = {
-    homepage = "http://projects.haskell.org/http/";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.1.nix b/pkgs/development/libraries/haskell/HTTP/4000.2.1.nix
deleted file mode 100644
index c677bbf40db4..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.2.1.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, httpdShed, HUnit, mtl, network, parsec, split
-, testFramework, testFrameworkHunit
-}:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.2.1";
-  sha256 = "01076rk7ly5228pszn54x4nqc6rqq1xw11ij9ajvhzf419islh0a";
-  buildDepends = [ mtl network parsec ];
-  testDepends = [
-    httpdShed HUnit network split testFramework testFrameworkHunit
-  ];
-  doCheck = false;
-  meta = {
-    homepage = "https://github.com/haskell/HTTP";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.2.nix b/pkgs/development/libraries/haskell/HTTP/4000.2.2.nix
deleted file mode 100644
index c18fd35c8a08..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.2.2.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, httpdShed, HUnit, mtl, network, parsec, split
-, testFramework, testFrameworkHunit
-}:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.2.2";
-  sha256 = "0qrr9wdj25sdfxifppmw0w14g8skpgf42ic4iqcqylxxzfa8v7vh";
-  buildDepends = [ mtl network parsec ];
-  testDepends = [
-    httpdShed HUnit network split testFramework testFrameworkHunit
-  ];
-  doCheck = false;
-  meta = {
-    homepage = "https://github.com/haskell/HTTP";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.3.nix b/pkgs/development/libraries/haskell/HTTP/4000.2.3.nix
deleted file mode 100644
index 86c4dc8fcc01..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.2.3.nix
+++ /dev/null
@@ -1,23 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, httpdShed, HUnit, mtl, network, parsec, split
-, testFramework, testFrameworkHunit
-}:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.2.3";
-  sha256 = "1z7s5rkyljwdl95cwqbqg64i207wjwxgpksrdmvcv82k39srzx80";
-  buildDepends = [ mtl network parsec ];
-  testDepends = [
-    httpdShed HUnit network split testFramework testFrameworkHunit
-  ];
-  doCheck = false;
-  meta = {
-    homepage = "https://github.com/haskell/HTTP";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.5.nix b/pkgs/development/libraries/haskell/HTTP/4000.2.5.nix
deleted file mode 100644
index 54c8733c5840..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.2.5.nix
+++ /dev/null
@@ -1,25 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, caseInsensitive, conduit, deepseq, httpdShed, httpTypes
-, HUnit, mtl, network, parsec, pureMD5, split, testFramework
-, testFrameworkHunit, wai, warp
-}:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.2.5";
-  sha256 = "03ij1zkykc438x2r1szz6ddvfhrjywlx61nrz377srcpbdmhxpb7";
-  buildDepends = [ mtl network parsec ];
-  testDepends = [
-    caseInsensitive conduit deepseq httpdShed httpTypes HUnit mtl
-    network pureMD5 split testFramework testFrameworkHunit wai warp
-  ];
-  doCheck = false;
-  meta = {
-    homepage = "https://github.com/haskell/HTTP";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.8.nix b/pkgs/development/libraries/haskell/HTTP/4000.2.8.nix
deleted file mode 100644
index d308d547c78d..000000000000
--- a/pkgs/development/libraries/haskell/HTTP/4000.2.8.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-# This file was auto-generated by cabal2nix. Please do NOT edit manually!
-
-{ cabal, caseInsensitive, conduit, deepseq, httpdShed, httpTypes
-, HUnit, mtl, network, parsec, pureMD5, split, testFramework
-, testFrameworkHunit, wai, warp
-}:
-
-cabal.mkDerivation (self: {
-  pname = "HTTP";
-  version = "4000.2.8";
-  sha256 = "0p0cwzjw2102bsyfaga6m8b53s6qnhd6byg2j2qla653f6kjlsh8";
-  buildDepends = [ mtl network parsec ];
-  testDepends = [
-    caseInsensitive conduit deepseq httpdShed httpTypes HUnit mtl
-    network pureMD5 split testFramework testFrameworkHunit wai warp
-  ];
-  jailbreak = true;
-  doCheck = false;
-  meta = {
-    homepage = "https://github.com/haskell/HTTP";
-    description = "A library for client-side HTTP";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    hydraPlatforms = self.stdenv.lib.platforms.none;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/HTTP/4000.2.18.nix b/pkgs/development/libraries/haskell/HTTP/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/HTTP/4000.2.18.nix
rename to pkgs/development/libraries/haskell/HTTP/default.nix
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 065ca17fff4a..ac77f35e0875 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1129,17 +1129,7 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   HTF = callPackage ../development/libraries/haskell/HTF {};
 
-  HTTP_4000_0_6 = callPackage ../development/libraries/haskell/HTTP/4000.0.6.nix {};
-  HTTP_4000_0_9 = callPackage ../development/libraries/haskell/HTTP/4000.0.9.nix {};
-  HTTP_4000_1_1 = callPackage ../development/libraries/haskell/HTTP/4000.1.1.nix {};
-  HTTP_4000_1_2 = callPackage ../development/libraries/haskell/HTTP/4000.1.2.nix {};
-  HTTP_4000_2_1 = callPackage ../development/libraries/haskell/HTTP/4000.2.1.nix {};
-  HTTP_4000_2_2 = callPackage ../development/libraries/haskell/HTTP/4000.2.2.nix {};
-  HTTP_4000_2_3 = callPackage ../development/libraries/haskell/HTTP/4000.2.3.nix {};
-  HTTP_4000_2_5 = callPackage ../development/libraries/haskell/HTTP/4000.2.5.nix {};
-  HTTP_4000_2_8 = callPackage ../development/libraries/haskell/HTTP/4000.2.8.nix {};
-  HTTP_4000_2_18 = callPackage ../development/libraries/haskell/HTTP/4000.2.18.nix {};
-  HTTP = self.HTTP_4000_2_18;
+  HTTP = callPackage ../development/libraries/haskell/HTTP {};
 
   httpAttoparsec = callPackage ../development/libraries/haskell/http-attoparsec {};