diff --git a/pkgs/development/libraries/haskell/comonad-transformers/2.1.2.nix b/pkgs/development/libraries/haskell/comonad-transformers/2.1.2.nix
deleted file mode 100644
index 1dd7c212c71..00000000000
--- a/pkgs/development/libraries/haskell/comonad-transformers/2.1.2.nix
+++ /dev/null
@@ -1,19 +0,0 @@
-{ cabal, comonad, contravariant, distributive, semigroupoids
-, semigroups, transformers
-}:
-
-cabal.mkDerivation (self: {
-  pname = "comonad-transformers";
-  version = "2.1.2";
-  sha256 = "0yhpsifnqxrg1p8f9hjslwkrakiaxa2kk9726q923a5sj225cvis";
-  buildDepends = [
-    comonad contravariant distributive semigroupoids semigroups
-    transformers
-  ];
-  meta = {
-    homepage = "http://github.com/ekmett/comonad-transformers/";
-    description = "Comonad transformers";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/comonad-transformers/3.0.nix b/pkgs/development/libraries/haskell/comonad-transformers/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/comonad-transformers/3.0.nix
rename to pkgs/development/libraries/haskell/comonad-transformers/default.nix
diff --git a/pkgs/development/libraries/haskell/comonad/1.1.1.6.nix b/pkgs/development/libraries/haskell/comonad/1.1.1.6.nix
deleted file mode 100644
index 53e014fb8ac..00000000000
--- a/pkgs/development/libraries/haskell/comonad/1.1.1.6.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ cabal, semigroups, transformers }:
-
-cabal.mkDerivation (self: {
-  pname = "comonad";
-  version = "1.1.1.6";
-  sha256 = "1sg0pa7393mzfm27pl52nchplhkls3k0f4ff8vzk76wzrgvhysg5";
-  buildDepends = [ semigroups transformers ];
-  meta = {
-    homepage = "http://github.com/ekmett/comonad/";
-    description = "Haskell 98 compatible comonads";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/comonad/3.0.0.2.nix b/pkgs/development/libraries/haskell/comonad/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/comonad/3.0.0.2.nix
rename to pkgs/development/libraries/haskell/comonad/default.nix
diff --git a/pkgs/development/libraries/haskell/semigroupoids/1.3.4.nix b/pkgs/development/libraries/haskell/semigroupoids/1.3.4.nix
deleted file mode 100644
index 776e452eafe..00000000000
--- a/pkgs/development/libraries/haskell/semigroupoids/1.3.4.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ cabal, comonad, contravariant, semigroups, transformers }:
-
-cabal.mkDerivation (self: {
-  pname = "semigroupoids";
-  version = "1.3.4";
-  sha256 = "0vnipjndbsldk5w1qw35i2zrd418rq13y10g0i33ylg1gwnsrqph";
-  buildDepends = [ comonad contravariant semigroups transformers ];
-  meta = {
-    homepage = "http://github.com/ekmett/semigroupoids";
-    description = "Haskell 98 semigroupoids: Category sans id";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/semigroupoids/3.0.nix b/pkgs/development/libraries/haskell/semigroupoids/default.nix
similarity index 100%
rename from pkgs/development/libraries/haskell/semigroupoids/3.0.nix
rename to pkgs/development/libraries/haskell/semigroupoids/default.nix
diff --git a/pkgs/development/libraries/haskell/split/0.1.nix b/pkgs/development/libraries/haskell/split/0.1.nix
deleted file mode 100644
index ad0df5c2cb0..00000000000
--- a/pkgs/development/libraries/haskell/split/0.1.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-{ cabal }:
-
-cabal.mkDerivation (self: {
-  pname = "split";
-  version = "0.1.4.3";
-  sha256 = "1i9vmb0zvmhqj6qcbnsapsk9lhsyzznz336c8s7v4sz20s99hsby";
-  meta = {
-    homepage = "http://code.haskell.org/~byorgey/code/split";
-    description = "Combinator library for splitting lists";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/tagsoup/0.10.1nix b/pkgs/development/libraries/haskell/tagsoup/0.10.1nix
deleted file mode 100644
index 462ee658fd2..00000000000
--- a/pkgs/development/libraries/haskell/tagsoup/0.10.1nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ cabal, mtl, network }:
-
-cabal.mkDerivation (self: {
-  pname = "tagsoup";
-  version = "0.10.1";
-  sha256 = "0bssfj5r790yj33q23i0lbj83xahzd9rf4jhqs21vgrpn9fqsynl";
-  isLibrary = true;
-  isExecutable = true;
-  buildDepends = [ mtl network ];
-  meta = {
-    homepage = "http://community.haskell.org/~ndm/tagsoup/";
-    description = "Parsing and extracting information from (possibly malformed) HTML/XML documents";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-  };
-})
diff --git a/pkgs/development/libraries/haskell/texmath/0.4.nix b/pkgs/development/libraries/haskell/texmath/0.4.nix
deleted file mode 100644
index 9d9a4f07586..00000000000
--- a/pkgs/development/libraries/haskell/texmath/0.4.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ cabal, parsec, syb, xml }:
-
-cabal.mkDerivation (self: {
-  pname = "texmath";
-  version = "0.4";
-  sha256 = "1rvnhqljxkljy8ncpaj8p7b14nvvm6zmiixv13m1zxlcr457j2ai";
-  isLibrary = true;
-  isExecutable = true;
-  buildDepends = [ parsec syb xml ];
-  meta = {
-    homepage = "http://github.com/jgm/texmath";
-    description = "Conversion of LaTeX math formulas to MathML";
-    license = "GPL";
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 87a6b8a2049..1f06a00b64f 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -534,16 +534,9 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   colour = callPackage ../development/libraries/haskell/colour {};
 
-  comonad_1_1_1_6 = callPackage ../development/libraries/haskell/comonad/1.1.1.6.nix {};
-  comonad_3_0_0_2 = callPackage ../development/libraries/haskell/comonad/3.0.0.2.nix {};
-  comonad = self.comonad_3_0_0_2;
+  comonad = callPackage ../development/libraries/haskell/comonad {};
 
-  comonadTransformers_2_1_2 = callPackage ../development/libraries/haskell/comonad-transformers/2.1.2.nix {
-    comonad = self.comonad_1_1_1_6;
-    semigroupoids = self.semigroupoids_1_3_4;
-  };
-  comonadTransformers_3_0 = callPackage ../development/libraries/haskell/comonad-transformers/3.0.nix {};
-  comonadTransformers = self.comonadTransformers_3_0;
+  comonadTransformers = callPackage ../development/libraries/haskell/comonad-transformers {};
 
   compactStringFix = callPackage ../development/libraries/haskell/compact-string-fix {};
 
@@ -605,10 +598,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   dataInttrie = callPackage ../development/libraries/haskell/data-inttrie {};
 
-  dataLens = callPackage ../development/libraries/haskell/data-lens {
-    comonadTransformers = self.comonadTransformers_2_1_2;
-    semigroupoids = self.semigroupoids_1_3_4;
-  };
+  dataLens = callPackage ../development/libraries/haskell/data-lens {};
 
   dataLensTemplate = callPackage ../development/libraries/haskell/data-lens-template {};
 
@@ -1329,11 +1319,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   semigroups = callPackage ../development/libraries/haskell/semigroups {};
 
-  semigroupoids_1_3_4 = callPackage ../development/libraries/haskell/semigroupoids/1.3.4.nix {
-    comonad = self.comonad_1_1_1_6;
-  };
-  semigroupoids_3_0 = callPackage ../development/libraries/haskell/semigroupoids/3.0.nix {};
-  semigroupoids = self.semigroupoids_3_0;
+  semigroupoids = callPackage ../development/libraries/haskell/semigroupoids {};
 
   shelly = callPackage ../development/libraries/haskell/shelly {};
 
@@ -1412,7 +1398,6 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   SMTPClient = callPackage ../development/libraries/haskell/SMTPClient {};
 
-  split_0_1 = callPackage ../development/libraries/haskell/split/0.1.nix {};
   split = callPackage ../development/libraries/haskell/split {};
 
   stbImage = callPackage ../development/libraries/haskell/stb-image {};
@@ -1450,8 +1435,6 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   tagsoup = callPackage ../development/libraries/haskell/tagsoup {};
 
-  tagsoup_0_10_1 = callPackage ../development/libraries/haskell/tagsoup/0.10.1nix {};
-
   temporary = callPackage ../development/libraries/haskell/temporary {};
 
   Tensor = callPackage ../development/libraries/haskell/Tensor {};
@@ -1775,7 +1758,6 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
 
   xmonadExtras = callPackage ../applications/window-managers/xmonad/xmonad-extras.nix {
     X11 = self.X11_1_5_0_1;
-    split = self.split_0_1;
   };
 
   # Tools.