sys-process/parallel: needs ithreads

Unfortunately, parcat really does seem to need ithreads, so depend
on it accordingly. Worse, it doesn't seem to check for failure in all
cases either if it is missing.

Note: if you're hitting a conflict caused by this, you need to set
PERL_FEATURES globally or in package.use with */*, not just for paralllel.

Closes: https://bugs.gentoo.org/940683
Signed-off-by: Sam James <sam@gentoo.org>

sys-process/parallel/parallel-20250722-r1.ebuild

@@ -0,0 +1,41 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/oletange.asc
+inherit verify-sig
+
+DESCRIPTION="Shell tool for executing jobs in parallel locally or on remote machines"
+HOMEPAGE="https://www.gnu.org/software/parallel/ https://git.savannah.gnu.org/cgit/parallel.git/"
+SRC_URI="mirror://gnu/${PN}/${P}.tar.bz2"
+SRC_URI+=" verify-sig? ( mirror://gnu/${PN}/${P}.tar.bz2.sig )"
+
+LICENSE="GPL-3+"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~x86 ~amd64-linux ~x86-linux ~x64-macos"
+
+RDEPEND="
+	dev-lang/perl[perl_features_ithreads]
+	dev-perl/Devel-Size
+	dev-perl/Text-CSV
+"
+DEPEND="${RDEPEND}"
+BDEPEND="verify-sig? ( >=sec-keys/openpgp-keys-oletange-20210423 )"
+
+src_configure() {
+	# bug #908214
+	unset PARALLEL_HOME
+
+	econf --docdir="${EPREFIX}"/usr/share/doc/${PF}/html
+}
+
+src_compile() {
+	# Silence a warning where it tries to use pod2pdf; force it to fallback
+	# to pre-generated PDF.
+	mkdir "${T}"/fake || die
+	ln -s "${BROOT}"/bin/false "${T}"/fake/pod2pdf || die
+	export PATH="${T}/fake:${PATH}"
+
+	default
+}