--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python2_7 python3_{6..8} )
+PYTHON_REQ_USE="threads(+)"
+
+inherit bash-completion-r1 elisp-common eutils distutils-r1 flag-o-matic
+
+DESCRIPTION="Scalable distributed SCM"
+HOMEPAGE="https://www.mercurial-scm.org/"
+SRC_URI="https://www.mercurial-scm.org/release/${P}.tar.gz"
+
+LICENSE="GPL-2+"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86 ~ppc-aix ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos ~x86-macos ~sparc-solaris ~sparc64-solaris ~x64-solaris ~x86-solaris"
+IUSE="+chg emacs gpg test tk zsh-completion"
+
+BROKEN_PYTHON="
+ !~dev-python/python-3.5.0
+ !~dev-python/python-3.5.1
+ !~dev-python/python-3.5.2
+ !~dev-python/python-3.6.0
+ !~dev-python/python-3.6.1"
+
+BDEPEND="${BROKEN_PYTHON}"
+
+RDEPEND="${BROKEN_PYTHON}
+ app-misc/ca-certificates
+ dev-python/zstandard[${PYTHON_USEDEP}]
+ gpg? ( app-crypt/gnupg )
+ tk? ( dev-lang/tk )
+ zsh-completion? ( app-shells/zsh )"
+
+DEPEND="emacs? ( >=app-editors/emacs-23.1:* )
+ test? ( app-arch/unzip
+ dev-python/pygments[${PYTHON_USEDEP}] )"
+
+SITEFILE="70${PN}-gentoo.el"
+
+# Too many tests fail #608720
+RESTRICT="test"
+
+python_prepare_all() {
+ # fix up logic that won't work in Gentoo Prefix (also won't outside in
+ # certain cases), bug #362891
+ sed -i -e 's:xcodebuild:nocodebuild:' setup.py || die
+ # Use absolute import for zstd
+ sed -i -e 's/from \.* import zstd/import zstd/' \
+ mercurial/utils/compression.py \
+ mercurial/wireprotoframing.py || die
+
+ distutils-r1_python_prepare_all
+}
+
+python_compile() {
+ filter-flags -ftracer -ftree-vectorize
+ python_is_python3 || local -x CFLAGS="${CFLAGS} -fno-strict-aliasing"
+ distutils-r1_python_compile build_ext --no-zstd
+}
+
+python_compile_all() {
+ rm -r contrib/win32 || die
+ if use chg; then
+ emake -C contrib/chg
+ fi
+ if use emacs; then
+ cd contrib || die
+ elisp-compile mercurial.el || die "elisp-compile failed!"
+ fi
+}
+
+python_install() {
+ distutils-r1_python_install build_ext --no-zstd
+}
+
+python_install_all() {
+ distutils-r1_python_install_all
+
+ newbashcomp contrib/bash_completion hg
+
+ if use zsh-completion ; then
+ insinto /usr/share/zsh/site-functions
+ newins contrib/zsh_completion _hg
+ fi
+
+ dobin hgeditor
+ if use tk; then
+ dobin contrib/hgk
+ fi
+ python_foreach_impl python_doscript contrib/hg-ssh
+
+ if use emacs; then
+ elisp-install ${PN} contrib/mercurial.el* || die "elisp-install failed!"
+ elisp-site-file-install "${FILESDIR}"/${SITEFILE}
+ fi
+
+ local RM_CONTRIB=( hgk hg-ssh bash_completion zsh_completion plan9 *.el )
+
+ if use chg; then
+ dobin contrib/chg/chg
+ doman contrib/chg/chg.1
+ RM_CONTRIB+=( chg )
+ fi
+
+ for f in ${RM_CONTRIB[@]}; do
+ rm -rf contrib/${f} || die
+ done
+
+ dodoc -r contrib
+ docompress -x /usr/share/doc/${PF}/contrib
+ doman doc/*.?
+ dodoc CONTRIBUTORS hgweb.cgi
+
+ insinto /etc/mercurial/hgrc.d
+ doins "${FILESDIR}/cacerts.rc"
+}
+
+src_test() {
+ pushd tests &>/dev/null || die
+ rm -rf *svn* # Subversion tests fail with 1.5
+ rm -f test-archive* # Fails due to verbose tar output changes
+ rm -f test-convert-baz* # GNU Arch baz
+ rm -f test-convert-cvs* # CVS
+ rm -f test-convert-darcs* # Darcs
+ rm -f test-convert-git* # git
+ rm -f test-convert-mtn* # monotone
+ rm -f test-convert-tla* # GNU Arch tla
+ rm -f test-largefiles* # tends to time out
+ if [[ ${EUID} -eq 0 ]]; then
+ einfo "Removing tests which require user privileges to succeed"
+ rm -f test-convert*
+ rm -f test-lock-badness*
+ rm -f test-permissions*
+ rm -f test-pull-permission*
+ rm -f test-journal-exists*
+ rm -f test-repair-strip*
+ fi
+
+ popd &>/dev/null || die
+ distutils-r1_src_test
+}
+
+python_test() {
+ local TEST_DIR
+
+ rm -rf "${TMPDIR}"/test
+ distutils_install_for_testing
+ cd tests || die
+ "${PYTHON}" run-tests.py --verbose \
+ --tmpdir="${TMPDIR}"/test \
+ --with-hg="${TEST_DIR}"/scripts/hg \
+ || die "Tests fail with ${EPYTHON}"
+}
+
+pkg_postinst() {
+ use emacs && elisp-site-regen
+
+ elog "If you want to convert repositories from other tools using convert"
+ elog "extension please install correct tool:"
+ elog " dev-vcs/cvs"
+ elog " dev-vcs/darcs"
+ elog " dev-vcs/git"
+ elog " dev-vcs/monotone"
+ elog " dev-vcs/subversion"
+}
+
+pkg_postrm() {
+ use emacs && elisp-site-regen
+}
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