1 files changed, 3 insertions, 0 deletions
diff --git a/pkgs/development/libraries/haskell/hledger-web/default.nix b/pkgs/development/libraries/haskell/hledger-web/default.nix
index 2e50b19f011..67adcb0fbdd 100644
--- a/pkgs/development/libraries/haskell/hledger-web/default.nix
+++ b/pkgs/development/libraries/haskell/hledger-web/default.nix
@@ -19,6 +19,9 @@ cabal.mkDerivation (self: {
     shakespeareJs shakespeareText text time transformers wai waiExtra
     warp yaml yesod yesodCore yesodDefault yesodForm yesodStatic
   ];
+  patchPhase = ''
+    sed -r -i -e 's|blaze-html * >= 0.5 *&& < 0.6|blaze-html >= 0.5|' hledger-web.cabal
+  '';
   jailbreak = true;
   meta = {
     homepage = "http://hledger.org";