Use jailbreak to get rid of overspecified version restrictions to fix

builds of Agda, accelerate-cuda, clientsession, filestore, ghc-events,
gitit, happstack, happstack, happstack, hledger-lib, hledger, mime-mail,
pandoc, snap, wai-app-static, yesod-static, and urlencoded.

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";