dev-cpp/fast_float: add 8.0.0 with conditional sed

Signed-off-by: Filip Kobierski <fkobi@pm.me>
Closes: https://github.com/gentoo/gentoo/pull/40951
Signed-off-by: Joonas Niilola <juippis@gentoo.org>

dev-cpp/fast_float/Manifest

@@ -1 +1,2 @@
 DIST fast_float-7.0.0.tar.gz 103358 BLAKE2B 7334a74952aba9629e0cd0f3b49679ed8f9c84436d3e9b10438d09416341343efc34acc0f87283a20fff5866d1e5787f456ac8a37f0a918823369419378ddb53 SHA512 d6745c0f7d3b7fd31d710ca1a5b8a58506d0009dbf2e1a29c70483abcec2c2498a15a5efef203f39b43a9357a04c91e360080b7897fffdf68bf4ec561c40c77d
+DIST fast_float-8.0.0.tar.gz 120849 BLAKE2B 69b73e33b91ce24563f0931a02847d0e3d0253e457ca827f2224f80e4c390dcc639364e9fc8994d4e41489b0a2a9fa36cedbda45ea1c0ff1c8489c2f0b63f72e SHA512 b4cf0a4802fa26eba2cd371b243bf8f9b662019c957d6f50b43e23937fac06845a9d10db0d4381e74549712237a00c0cfbfc7483d3bdb1a9d3b2185f8a62ad25

dev-cpp/fast_float/fast_float-8.0.0.ebuild

@@ -0,0 +1,35 @@
+# Copyright 2024-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake
+
+DESCRIPTION="Fast and exact implementation of the C++ from_chars functions for number types"
+HOMEPAGE="https://github.com/fastfloat/fast_float"
+SRC_URI="https://github.com/fastfloat/fast_float/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="|| ( Apache-2.0 Boost-1.0 MIT )"
+SLOT="0"
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc64 ~riscv ~sparc ~x86"
+IUSE="test"
+RESTRICT="!test? ( test )"
+
+BDEPEND="test? ( dev-cpp/doctest )"
+
+src_configure() {
+	local mycmakeargs=( -DFASTFLOAT_TEST=$(usex test) )
+
+	# Avoid passing these without USE=test to avoid cmake warning
+	# "Manually-specified variables were not used by the project"
+	if use test; then
+		mycmakeargs+=(
+			-DSYSTEM_DOCTEST=ON
+			# Unconditionally calls FetchContent
+			-DFASTFLOAT_SUPPLEMENTAL_TESTS=OFF
+		)
+		sed -i 's/-Werror//' tests/CMakeLists.txt || die
+	fi
+
+	cmake_src_configure
+}