diff --git a/pkgs/development/libraries/haskell/Agda/default.nix b/pkgs/development/libraries/haskell/Agda/default.nix
index c72177e2108f..b598accffc60 100644
--- a/pkgs/development/libraries/haskell/Agda/default.nix
+++ b/pkgs/development/libraries/haskell/Agda/default.nix
@@ -13,9 +13,7 @@ cabal.mkDerivation (self: {
     QuickCheck syb xhtml zlib
   ];
   buildTools = [ alex happy ];
-  patchPhase = ''
-    sed -i -e 's|mtl == 2.0.\*|mtl|' Agda.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://wiki.portal.chalmers.se/agda/";
     description = "A dependently typed functional programming language and proof assistant";
diff --git a/pkgs/development/libraries/haskell/accelerate-cuda/default.nix b/pkgs/development/libraries/haskell/accelerate-cuda/default.nix
index ff9a98cbb59e..3772320b0c22 100644
--- a/pkgs/development/libraries/haskell/accelerate-cuda/default.nix
+++ b/pkgs/development/libraries/haskell/accelerate-cuda/default.nix
@@ -12,9 +12,6 @@ cabal.mkDerivation (self: {
     hashable hashtables languageCQuote mainlandPretty mtl srcloc
     transformers unorderedContainers
   ];
-  patchPhase = ''
-    sed -i -e 's|\<defaultMain\>|defaultMainWithHooks autoconfUserHooks|' Setup.hs
-  '';
   meta = {
     homepage = "http://www.cse.unsw.edu.au/~chak/project/accelerate/";
     description = "Accelerate backend for NVIDIA GPUs";
diff --git a/pkgs/development/libraries/haskell/clientsession/default.nix b/pkgs/development/libraries/haskell/clientsession/default.nix
index 417e568092d7..13513d023330 100644
--- a/pkgs/development/libraries/haskell/clientsession/default.nix
+++ b/pkgs/development/libraries/haskell/clientsession/default.nix
@@ -10,9 +10,7 @@ cabal.mkDerivation (self: {
     base64Bytestring cereal cprngAes cryptoApi cryptocipher entropy
     skein tagged
   ];
-  patchPhase = ''
-    sed -i -e 's|, base64-bytestring.*|, base64-bytestring|' clientsession.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://github.com/yesodweb/clientsession/tree/master";
     description = "Securely store session data in a client-side cookie";
diff --git a/pkgs/development/libraries/haskell/filestore/default.nix b/pkgs/development/libraries/haskell/filestore/default.nix
index b0cc40d39140..e265cf54e4ed 100644
--- a/pkgs/development/libraries/haskell/filestore/default.nix
+++ b/pkgs/development/libraries/haskell/filestore/default.nix
@@ -11,9 +11,7 @@ cabal.mkDerivation (self: {
   buildDepends = [
     Diff filepath HUnit mtl parsec split time utf8String xml
   ];
-  patchPhase = ''
-    sed -i -e 's|split.*,|split,|' filestore.cabal
-  '';
+  jailbreak = true;
   noHaddock = true;
   meta = {
     description = "Interface for versioning file stores";
diff --git a/pkgs/development/libraries/haskell/ghc-events/default.nix b/pkgs/development/libraries/haskell/ghc-events/default.nix
index 4827b7494845..149e88cd01de 100644
--- a/pkgs/development/libraries/haskell/ghc-events/default.nix
+++ b/pkgs/development/libraries/haskell/ghc-events/default.nix
@@ -7,9 +7,7 @@ cabal.mkDerivation (self: {
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ binary mtl ];
-  patchPhase = ''
-    sed -i -e 's|mtl *>=.*$|mtl,|' ghc-events.cabal
-  '';
+  jailbreak = true;
   noHaddock = true;
   meta = {
     description = "Library and tool for parsing .eventlog files from GHC";
diff --git a/pkgs/development/libraries/haskell/gitit/default.nix b/pkgs/development/libraries/haskell/gitit/default.nix
index 41d521805ce7..7de302aee6de 100644
--- a/pkgs/development/libraries/haskell/gitit/default.nix
+++ b/pkgs/development/libraries/haskell/gitit/default.nix
@@ -18,9 +18,7 @@ cabal.mkDerivation (self: {
     safe SHA syb tagsoup text time url utf8String xhtml xml xssSanitize
     zlib
   ];
-  patchPhase = ''
-    sed -i -e 's|hslogger.*,|hslogger,|' -e 's|base64-bytestring.*,|base64-bytestring,|' gitit.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://gitit.net";
     description = "Wiki using happstack, git or darcs, and pandoc";
diff --git a/pkgs/development/libraries/haskell/happstack/happstack-hamlet.nix b/pkgs/development/libraries/haskell/happstack/happstack-hamlet.nix
index 7b2c937bd069..cf71dde30c34 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-hamlet.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-hamlet.nix
@@ -5,9 +5,7 @@ cabal.mkDerivation (self: {
   version = "7.0.1";
   sha256 = "13ayypl2x402h6a7yq7fvgd2mn21gl5gcw2hk7f5vr2bdlvwv53n";
   buildDepends = [ hamlet happstackServer text ];
-  patchPhase = ''
-    sed -i -e 's|hamlet .*,|hamlet,|' happstack-hamlet.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://www.happstack.com/";
     description = "Support for Hamlet HTML templates in Happstack";
diff --git a/pkgs/development/libraries/haskell/happstack/happstack-server.nix b/pkgs/development/libraries/haskell/happstack/happstack-server.nix
index 410eb7e1d051..06b882c20bb1 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-server.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-server.nix
@@ -13,9 +13,7 @@ cabal.mkDerivation (self: {
     html monadControl mtl network parsec sendfile syb systemFilepath
     text time transformers transformersBase utf8String xhtml zlib
   ];
-  patchPhase = ''
-    sed -i -e 's|base64-bytestring.*,|base64-bytestring,|' happstack-server.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://happstack.com";
     description = "Web related tools and services";
diff --git a/pkgs/development/libraries/haskell/happstack/happstack-util.nix b/pkgs/development/libraries/haskell/happstack/happstack-util.nix
index b457ec6dc322..8dfac311a9a5 100644
--- a/pkgs/development/libraries/haskell/happstack/happstack-util.nix
+++ b/pkgs/development/libraries/haskell/happstack/happstack-util.nix
@@ -12,9 +12,7 @@ cabal.mkDerivation (self: {
     extensibleExceptions filepath hslogger mtl network parsec random
     time unixCompat
   ];
-  patchPhase = ''
-    sed -i -e 's|mtl >= 1.1 && < 2.1|mtl|' happstack-util.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://happstack.com";
     description = "Web framework";
diff --git a/pkgs/development/libraries/haskell/hledger-lib/default.nix b/pkgs/development/libraries/haskell/hledger-lib/default.nix
index de2e40a03d52..af230b2e6448 100644
--- a/pkgs/development/libraries/haskell/hledger-lib/default.nix
+++ b/pkgs/development/libraries/haskell/hledger-lib/default.nix
@@ -10,9 +10,7 @@ cabal.mkDerivation (self: {
     cmdargs csv filepath HUnit mtl parsec regexpr safe shakespeareText
     split time transformers utf8String
   ];
-  patchPhase = ''
-    sed -i -e 's|,split.*|,split|' -e 's|,cmdargs.*|,cmdargs|' hledger-lib.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://hledger.org";
     description = "Core data types, parsers and utilities for the hledger accounting tool";
diff --git a/pkgs/development/libraries/haskell/hledger/default.nix b/pkgs/development/libraries/haskell/hledger/default.nix
index a02697be7c23..46ae378d738c 100644
--- a/pkgs/development/libraries/haskell/hledger/default.nix
+++ b/pkgs/development/libraries/haskell/hledger/default.nix
@@ -13,9 +13,7 @@ cabal.mkDerivation (self: {
     cabalFileTh cmdargs filepath haskeline hledgerLib HUnit mtl parsec
     regexpr safe shakespeareText split text time utf8String
   ];
-  patchPhase = ''
-    sed -i -e 's|,split.*|,split|' -e 's|,cmdargs.*|,cmdargs|' hledger.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://hledger.org";
     description = "The main command-line interface for the hledger accounting tool";
diff --git a/pkgs/development/libraries/haskell/mime-mail/default.nix b/pkgs/development/libraries/haskell/mime-mail/default.nix
index 9abc588a0e76..6303cbb8f4ea 100644
--- a/pkgs/development/libraries/haskell/mime-mail/default.nix
+++ b/pkgs/development/libraries/haskell/mime-mail/default.nix
@@ -7,9 +7,7 @@ cabal.mkDerivation (self: {
   buildDepends = [
     base64Bytestring blazeBuilder filepath random text
   ];
-  patchPhase = ''
-    sed -i -e 's|, base64-bytestring.*|, base64-bytestring|' mime-mail.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://github.com/snoyberg/mime-mail";
     description = "Compose MIME email messages";
diff --git a/pkgs/development/libraries/haskell/pandoc/default.nix b/pkgs/development/libraries/haskell/pandoc/default.nix
index 8f34d2d88a0a..85a8338e4319 100644
--- a/pkgs/development/libraries/haskell/pandoc/default.nix
+++ b/pkgs/development/libraries/haskell/pandoc/default.nix
@@ -15,9 +15,7 @@ cabal.mkDerivation (self: {
     highlightingKate HTTP json mtl network pandocTypes parsec random
     syb tagsoup temporary texmath time utf8String xml zipArchive zlib
   ];
-  patchPhase = ''
-    sed -i -e 's|base64-bytestring.*,|base64-bytestring,|' pandoc.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://johnmacfarlane.net/pandoc";
     description = "Conversion between markup formats";
diff --git a/pkgs/development/libraries/haskell/snap/snap.nix b/pkgs/development/libraries/haskell/snap/snap.nix
index 4121a657357f..e40aee63bc19 100644
--- a/pkgs/development/libraries/haskell/snap/snap.nix
+++ b/pkgs/development/libraries/haskell/snap/snap.nix
@@ -19,9 +19,7 @@ cabal.mkDerivation (self: {
     snapServer stm syb text time transformers unorderedContainers
     utf8String vector vectorAlgorithms xmlhtml
   ];
-  patchPhase = ''
-    sed -i snap.cabal -e 's|clientsession.*,|clientsession,|'
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://snapframework.com/";
     description = "Snap: A Haskell Web Framework: project starter executable and glue code library";
diff --git a/pkgs/development/libraries/haskell/urlencoded/default.nix b/pkgs/development/libraries/haskell/urlencoded/default.nix
index 0e7a5413fa27..45891bb45b12 100644
--- a/pkgs/development/libraries/haskell/urlencoded/default.nix
+++ b/pkgs/development/libraries/haskell/urlencoded/default.nix
@@ -7,9 +7,7 @@ cabal.mkDerivation (self: {
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ mtl network split ];
-  patchPhase = ''
-    sed -i -e 's|split.*|split|' urlencoded.cabal
-  '';
+  jailbreak = true;
   meta = {
     homepage = "https://github.com/pheaver/urlencoded";
     description = "Generate or process x-www-urlencoded data";
diff --git a/pkgs/development/libraries/haskell/wai-app-static/default.nix b/pkgs/development/libraries/haskell/wai-app-static/default.nix
index e1f2cb9116da..b6f80e49c5b3 100644
--- a/pkgs/development/libraries/haskell/wai-app-static/default.nix
+++ b/pkgs/development/libraries/haskell/wai-app-static/default.nix
@@ -13,10 +13,8 @@ cabal.mkDerivation (self: {
     cryptoConduit cryptohash fileEmbed httpDate httpTypes mimeTypes
     systemFileio systemFilepath text time transformers unixCompat wai
   ];
-  patchPhase = ''
-    sed -i -e 's|, base64-bytestring.*|, base64-bytestring|' wai-app-static.cabal
-  '';
-    meta = {
+  jailbreak = true;
+  meta = {
     homepage = "http://www.yesodweb.com/book/wai";
     description = "WAI application for static serving";
     license = self.stdenv.lib.licenses.mit;
diff --git a/pkgs/development/libraries/haskell/yesod-static/default.nix b/pkgs/development/libraries/haskell/yesod-static/default.nix
index 8fffccd649ab..4a7d8c1a7260 100644
--- a/pkgs/development/libraries/haskell/yesod-static/default.nix
+++ b/pkgs/development/libraries/haskell/yesod-static/default.nix
@@ -12,9 +12,7 @@ cabal.mkDerivation (self: {
     httpTypes systemFilepath text transformers unixCompat wai
     waiAppStatic yesodCore
   ];
-  patchPhase = ''
-    sed -i yesod-static.cabal -e 's|, base64-bytestring.*|, base64-bytestring|'
-  '';
+  jailbreak = true;
   meta = {
     homepage = "http://www.yesodweb.com/";
     description = "Static file serving subsite for Yesod Web Framework";