Install this version:
emerge -a =dev-haskell/prometheus-client-1.1.1
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-haskell/prometheus-client-1.1.1
Or alternatively:
emerge --autounmask-write -a =dev-haskell/prometheus-client-1.1.1
# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
CABAL_HACKAGE_REVISION=1
CABAL_FEATURES="lib profile haddock hoogle hscolour test-suite"
inherit haskell-cabal
DESCRIPTION="Haskell client library for exposing prometheus.io metrics"
HOMEPAGE="https://github.com/fimad/prometheus-haskell"
LICENSE="Apache-2.0"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~x86"
RDEPEND="dev-haskell/atomic-primops:=[profile?]
dev-haskell/clock:=[profile?]
dev-haskell/data-sketches:=[profile?]
dev-haskell/primitive:=[profile?]
dev-haskell/text:=[profile?]
dev-haskell/transformers-compat:=[profile?]
dev-haskell/utf8-string:=[profile?]
dev-lang/ghc:="
DEPEND="${RDEPEND}"
BDEPEND="dev-haskell/cabal:=
test? ( dev-haskell/doctest
dev-haskell/hspec
dev-haskell/quickcheck
dev-haskell/random-shuffle )"
src_prepare() {
haskell-cabal_src_prepare
sed -i '/license-file/d' prometheus-client.cabal || die "sed failed"
}
dev-haskell/atomic-primops:=[profile?] dev-haskell/clock:=[profile?] dev-haskell/data-sketches:=[profile?] dev-haskell/primitive:=[profile?] dev-haskell/text:=[profile?] dev-haskell/transformers-compat:=[profile?] dev-haskell/utf8-string:=[profile?] dev-lang/ghc:=
dev-haskell/atomic-primops:=[profile?] dev-haskell/clock:=[profile?] dev-haskell/data-sketches:=[profile?] dev-haskell/primitive:=[profile?] dev-haskell/text:=[profile?] dev-haskell/transformers-compat:=[profile?] dev-haskell/utf8-string:=[profile?] dev-lang/ghc:=
dev-haskell/cabal:= test? ( dev-haskell/doctest dev-haskell/hspec dev-haskell/quickcheck dev-haskell/random-shuffle )