diff --git a/pkgs/development/compilers/flapjax/default.nix b/pkgs/development/compilers/flapjax/default.nix
deleted file mode 100644
index 5167bf7d795..00000000000
--- a/pkgs/development/compilers/flapjax/default.nix
+++ /dev/null
@@ -1,30 +0,0 @@
-{cabal, fetchurl, unzip, xhtml, WebBits, WebBitsHtml, JsContracts}:
-
-cabal.mkDerivation ( self: {
-  pname = "flapjax";
-  version = "2.1";
-
-  src = fetchurl {
-    url = https://github.com/brownplt/flapjax/zipball/Flapjax-2.1;
-    name = "flapjax-2.1.zip";
-    sha256 = "1cp9g570528a813ljnvd1lb389iz0i6511xynf6kzryv8ckc1n7v";
-  };
-
-  # The Makefile copies some files to update the flapjax website into
-  # missing directories; the -p is to avoid these errors.
-  preConfigure = ''
-    cd fx
-    sed -i 's/mkdir/mkdir -p/' Makefile
-    make
-    cd ../compiler
-  '';
-
-  extraBuildInputs = [ unzip JsContracts ];
-  propagatedBuildInputs = [ xhtml WebBits WebBitsHtml ];
-
-  meta = { 
-      description = "programming language designed around the demands of modern, client-based Web applications";
-      homepage = http://www.flapjax-lang.org/;
-      license = "BSD";
-  };
-})
diff --git a/pkgs/development/libraries/haskell/JsContracts/default.nix b/pkgs/development/libraries/haskell/JsContracts/default.nix
deleted file mode 100644
index 713e67fbf60..00000000000
--- a/pkgs/development/libraries/haskell/JsContracts/default.nix
+++ /dev/null
@@ -1,17 +0,0 @@
-{ cabal, filepath, mtl, parsec, syb, WebBits, WebBitsHtml }:
-
-cabal.mkDerivation (self: {
-  pname = "JsContracts";
-  version = "0.5.3";
-  sha256 = "17l6kdpdc7lrpd9j4d2b6vklkpclshcjy6hzpi442b7pj96sn589";
-  isLibrary = true;
-  isExecutable = true;
-  buildDepends = [ filepath mtl parsec syb WebBits WebBitsHtml ];
-  meta = {
-    homepage = "http://www.cs.brown.edu/research/plt/";
-    description = "Design-by-contract for JavaScript";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/WebBits-Html/1.0.1.nix b/pkgs/development/libraries/haskell/WebBits-Html/1.0.1.nix
deleted file mode 100644
index d69ac78b83d..00000000000
--- a/pkgs/development/libraries/haskell/WebBits-Html/1.0.1.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ cabal, mtl, parsec, syb, WebBits }:
-
-cabal.mkDerivation (self: {
-  pname = "WebBits-Html";
-  version = "1.0.1";
-  sha256 = "134rmm5ccfsjdr0pdwn2mf81l81rgxapa3wjjfjkxrkxq6hav35n";
-  buildDepends = [ mtl parsec syb WebBits ];
-  meta = {
-    homepage = "http://www.cs.brown.edu/research/plt/";
-    description = "JavaScript analysis tools";
-    license = "LGPL";
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/WebBits-Html/1.0.2.nix b/pkgs/development/libraries/haskell/WebBits-Html/1.0.2.nix
deleted file mode 100644
index 26f14a08774..00000000000
--- a/pkgs/development/libraries/haskell/WebBits-Html/1.0.2.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ cabal, mtl, parsec, syb, WebBits }:
-
-cabal.mkDerivation (self: {
-  pname = "WebBits-Html";
-  version = "1.0.2";
-  sha256 = "18dd52970cd27kra4l89vvrx2mrdbqd4w4f76xrq3142daxsagal";
-  buildDepends = [ mtl parsec syb WebBits ];
-  meta = {
-    homepage = "http://www.cs.brown.edu/research/plt/";
-    description = "JavaScript analysis tools";
-    license = "LGPL";
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/WebBits/1.0.nix b/pkgs/development/libraries/haskell/WebBits/1.0.nix
deleted file mode 100644
index 49bcd8ed112..00000000000
--- a/pkgs/development/libraries/haskell/WebBits/1.0.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ cabal, mtl, parsec, syb }:
-
-cabal.mkDerivation (self: {
-  pname = "WebBits";
-  version = "1.0";
-  sha256 = "1xqk4ajywlaq9nb9a02i7c25na5p2qbpc2k9zw93gbapppjiapsc";
-  buildDepends = [ mtl parsec syb ];
-  meta = {
-    homepage = "http://www.cs.brown.edu/research/plt/";
-    description = "JavaScript analysis tools";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/WebBits/2.0.nix b/pkgs/development/libraries/haskell/WebBits/2.0.nix
deleted file mode 100644
index 0638ce06ef9..00000000000
--- a/pkgs/development/libraries/haskell/WebBits/2.0.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ cabal, mtl, parsec, syb }:
-
-cabal.mkDerivation (self: {
-  pname = "WebBits";
-  version = "2.0";
-  sha256 = "14a1rqlq925f6rdbi8yx44xszj5pvskcmw1gi1bj8hbilgmlwi7f";
-  buildDepends = [ mtl parsec syb ];
-  meta = {
-    homepage = "http://www.cs.brown.edu/research/plt/";
-    description = "JavaScript analysis tools";
-    license = self.stdenv.lib.licenses.bsd3;
-    platforms = self.ghc.meta.platforms;
-    maintainers = [ self.stdenv.lib.maintainers.andres ];
-  };
-})
diff --git a/pkgs/development/libraries/haskell/WebBits/2.2.nix b/pkgs/development/libraries/haskell/WebBits/2.2.nix
deleted file mode 100644
index 4240d7b9ce9..00000000000
--- a/pkgs/development/libraries/haskell/WebBits/2.2.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ cabal, mtl, parsec, syb }:
-
-cabal.mkDerivation (self: {
-  pname = "WebBits";
-  version = "2.2";
-  sha256 = "1frmnjbpgm76dzs1p4766fb6isqc3pxv4dnj8sdhnfliv5j0xv2z";
-  buildDepends = [ mtl parsec syb ];
-  meta = {
-    homepage = "http://github.com/brownplt/webbits";
-    description = "JavaScript analysis tools";
-    license = self.stdenv.lib.licenses.bsd3;
-    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 7b6cdaaf664..07dab1986e6 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -1215,11 +1215,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   jpeg = callPackage ../development/libraries/haskell/jpeg {};
 
-  JsContracts = callPackage ../development/libraries/haskell/JsContracts {
-    WebBits = self.WebBits_1_0;
-    WebBitsHtml = self.WebBitsHtml_1_0_1;
-  };
-
   json = callPackage ../development/libraries/haskell/json {};
 
   jsonAssertions = callPackage ../development/libraries/haskell/json-assertions {};
@@ -2349,23 +2344,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   warpTls = callPackage ../development/libraries/haskell/warp-tls {};
 
-  WebBits_1_0 = callPackage ../development/libraries/haskell/WebBits/1.0.nix {
-    parsec = self.parsec_2_1_0_1;
-  };
-  WebBits_2_0 = callPackage ../development/libraries/haskell/WebBits/2.0.nix {
-    parsec = self.parsec_2_1_0_1;
-  };
-  WebBits_2_2 = callPackage ../development/libraries/haskell/WebBits/2.2.nix {};
-  WebBits = self.WebBits_2_2;
-
-  WebBitsHtml_1_0_1 = callPackage ../development/libraries/haskell/WebBits-Html/1.0.1.nix {
-    WebBits = self.WebBits_2_0;
-  };
-  WebBitsHtml_1_0_2 = callPackage ../development/libraries/haskell/WebBits-Html/1.0.2.nix {
-    WebBits = self.WebBits_2_0;
-  };
-  WebBitsHtml = self.WebBitsHtml_1_0_2;
-
   webRoutes = callPackage ../development/libraries/haskell/web-routes {};
 
   webRoutesBoomerang = callPackage ../development/libraries/haskell/web-routes-boomerang {};
@@ -2517,8 +2495,6 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
 
   epic = callPackage ../development/compilers/epic {};
 
-  flapjax = callPackage ../development/compilers/flapjax {};
-
   pakcs = callPackage ../development/compilers/pakcs {};
 
   # Development tools.