Install this version:
emerge -a =dev-haskell/ptr-0.16.8.8
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-haskell/ptr-0.16.8.8
Or alternatively:
emerge --autounmask-write -a =dev-haskell/ptr-0.16.8.8
# 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="Abstractions for operations on pointers"
HOMEPAGE="https://github.com/nikita-volkov/ptr"
LICENSE="MIT"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~x86"
RDEPEND="dev-haskell/contravariant:=[profile?]
dev-haskell/profunctors:=[profile?]
dev-haskell/strict-list:=[profile?]
dev-haskell/text:=[profile?]
dev-haskell/vector:=[profile?]
dev-lang/ghc:="
DEPEND="${RDEPEND}"
BDEPEND="dev-haskell/cabal:=
test? ( dev-haskell/cereal
dev-haskell/quickcheck
dev-haskell/quickcheck-instances
dev-haskell/rerebase
dev-haskell/tasty
dev-haskell/tasty-hunit
dev-haskell/tasty-quickcheck )"
src_prepare() {
haskell-cabal_src_prepare
sed -i '/license-file/d' ptr.cabal || die "sed failed"
}
dev-haskell/contravariant:=[profile?] dev-haskell/profunctors:=[profile?] dev-haskell/strict-list:=[profile?] dev-haskell/text:=[profile?] dev-haskell/vector:=[profile?] dev-lang/ghc:=
dev-haskell/contravariant:=[profile?] dev-haskell/profunctors:=[profile?] dev-haskell/strict-list:=[profile?] dev-haskell/text:=[profile?] dev-haskell/vector:=[profile?] dev-lang/ghc:=
dev-haskell/cabal:= test? ( dev-haskell/cereal dev-haskell/quickcheck dev-haskell/quickcheck-instances dev-haskell/rerebase dev-haskell/tasty dev-haskell/tasty-hunit dev-haskell/tasty-quickcheck )