Install this version:
emerge -a =dev-haskell/focus-1.0.3.2
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-haskell/focus-1.0.3.2
Or alternatively:
emerge --autounmask-write -a =dev-haskell/focus-1.0.3.2
# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
inherit haskell-cabal
DESCRIPTION="Manipulating elements of container data structures"
HOMEPAGE="https://github.com/nikita-volkov/focus"
LICENSE="MIT"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~x86"
RDEPEND="dev-lang/ghc:="
DEPEND="${RDEPEND}"
BDEPEND="dev-haskell/cabal:=
test? ( dev-haskell/rerebase
dev-haskell/tasty
dev-haskell/tasty-hunit )"
src_prepare() {
haskell-cabal_src_prepare
sed -i '/license-file/d' focus.cabal || die "sed failed"
}
dev-lang/ghc:=
dev-lang/ghc:=
dev-haskell/cabal:= test? ( dev-haskell/rerebase dev-haskell/tasty dev-haskell/tasty-hunit )