Install this version:
emerge -a =dev-haskell/exceptions-0.10.12If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-haskell/exceptions-0.10.12Or alternatively:
emerge --autounmask-write -a =dev-haskell/exceptions-0.10.12# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
# ebuild generated by hackport 0.9.1.0.9999
CABAL_HACKAGE_REVISION=1
CABAL_FEATURES="lib profile haddock hoogle hscolour"
inherit haskell-cabal
DESCRIPTION="Extensible optionally-pure exceptions"
HOMEPAGE="https://github.com/ekmett/exceptions/"
LICENSE="BSD"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~arm64"
RDEPEND=">=dev-lang/ghc-9.0.2:=
"
DEPEND="${RDEPEND}
>=dev-haskell/cabal-3.4.1.0
"
# test? ( >=dev-haskell/quickcheck-2.5 <dev-haskell/quickcheck-2.19
# >=dev-haskell/tasty-1.4 <dev-haskell/tasty-1.6
# >=dev-haskell/tasty-hunit-0.10 <dev-haskell/tasty-hunit-0.11
# >=dev-haskell/tasty-quickcheck-0.10 <dev-haskell/tasty-quickcheck-0.12 )
CABAL_CORE_LIB_GHC_PV="9.12.4"
>=dev-lang/ghc-9.0.2:= >=dev-haskell/cabal-3.4.1.0
>=dev-lang/ghc-9.0.2:=