diff --git a/dev-haskell/blaze-builder/Manifest b/dev-haskell/blaze-builder/Manifest
index fc4677add1698..1198bcb097dd1 100644
--- a/dev-haskell/blaze-builder/Manifest
+++ b/dev-haskell/blaze-builder/Manifest
@@ -1 +1,2 @@
 DIST blaze-builder-0.4.1.0.tar.gz 61365 BLAKE2B 6c6a1c2f7b97a75bb7489471e34674d0502ec1b2871643dc945ef0574d94cc09c2726d03fcc4f38d43f34baadd8629a0e81d5292998153ee8b907d546153488c SHA512 0962634113a19d39fb19a9df895a4e4e3e0fc5b2c17fd0d5c27e1cd9da128fd3af2f01d7b0ce894d3964b5b3bd874aeae205b126e069a6e5d964ad97c753da39
+DIST blaze-builder-0.4.2.1.tar.gz 60704 BLAKE2B 0799da061985559e3281d064dc2624a1ae2310befaadfc2cddca6999f3725bfc2a8a97d73810566c82b6037e1524ee19059c10ed6eb88707e95792ce2c1282ce SHA512 30f8d1d70a1aeb5b4c4e3170e40207c0f39933050e04bbdff49683a8b2e850921e80fa8e2d7f2b7a2a19fd6340bb65fad9c1d33999abf8a388d3f0ce921d0744
diff --git a/dev-haskell/blaze-builder/blaze-builder-0.4.2.1.ebuild b/dev-haskell/blaze-builder/blaze-builder-0.4.2.1.ebuild
new file mode 100644
index 0000000000000..0ccb697a77fe7
--- /dev/null
+++ b/dev-haskell/blaze-builder/blaze-builder-0.4.2.1.ebuild
@@ -0,0 +1,30 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# ebuild generated by hackport 0.6.7.9999
+
+CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
+inherit haskell-cabal
+
+DESCRIPTION="Efficient buffered output"
+HOMEPAGE="https://github.com/lpsmith/blaze-builder"
+SRC_URI="https://hackage.haskell.org/package/${P}/${P}.tar.gz"
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~ppc64 ~x86"
+
+RDEPEND=">=dev-haskell/text-0.10:=[profile?] <dev-haskell/text-1.3:=[profile?]
+	>=dev-lang/ghc-8.4.3:=
+"
+DEPEND="${RDEPEND}
+	>=dev-haskell/cabal-2.2.0.1
+	test? ( dev-haskell/hunit
+		dev-haskell/quickcheck
+		dev-haskell/test-framework
+		dev-haskell/test-framework-hunit
+		dev-haskell/test-framework-quickcheck2
+		dev-haskell/utf8-string )
+"