Install this version:
emerge -a =dev-haskell/tasty-1.4.3-r1
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =dev-haskell/tasty-1.4.3-r1
Or alternatively:
emerge --autounmask-write -a =dev-haskell/tasty-1.4.3-r1
# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
# ebuild generated by hackport 0.8.5.1.9999
#hackport: flags: +unix
CABAL_FEATURES="lib profile haddock hoogle hscolour"
inherit haskell-cabal
DESCRIPTION="Modern and extensible testing framework"
HOMEPAGE="https://github.com/UnkindPartition/tasty"
LICENSE="MIT"
SLOT="0/${PV}"
KEYWORDS="~amd64 ~arm64 ~ppc64 ~riscv ~x86"
RDEPEND="
>=dev-haskell/ansi-terminal-0.9:=[profile?]
>=dev-haskell/optparse-applicative-0.14:=[profile?]
>=dev-haskell/tagged-0.5:=[profile?]
>=dev-haskell/unbounded-delays-0.1:=[profile?]
>=dev-lang/ghc-9.0.2:=
"
DEPEND="${RDEPEND}
>=dev-haskell/cabal-3.4.1.0
"
src_configure() {
haskell-cabal_src_configure \
--flag=unix
}
>=dev-haskell/ansi-terminal-0.9:=[profile?] >=dev-haskell/optparse-applicative-0.14:=[profile?] >=dev-haskell/tagged-0.5:=[profile?] >=dev-haskell/unbounded-delays-0.1:=[profile?] >=dev-lang/ghc-9.0.2:= >=dev-haskell/cabal-3.4.1.0
>=dev-haskell/ansi-terminal-0.9:=[profile?] >=dev-haskell/optparse-applicative-0.14:=[profile?] >=dev-haskell/tagged-0.5:=[profile?] >=dev-haskell/unbounded-delays-0.1:=[profile?] >=dev-lang/ghc-9.0.2:=