dev-libs/icu-64.2.ebuild cannot be build with no python3 installed. dev-libs/icu-64.2.ebuild should explicitly require python3 via PYTHON_COMPAT Reproducible: Always Steps to Reproduce: 1. remove python3 2. try to install dev-libs/icu Actual Results: build file with Spawning Python to generate test/testdata/rules.mk... python3: no python-exec wrapped executable found in /usr/lib/python-exec. configure: error: Python failed to run; see above error. Expected Results: dev-libs/icu should require python3 to be installed via PYTHON_COMPAT or similar method
http://site.icu-project.org/download/63 says: "Warning for Python 3: ICU 64 will require Python 3 for data build. The warning will become an error in ICU 64." http://site.icu-project.org/download/64 says: "Despite the warning from the ICU 63 build, ICU 64 does not yet require Python 3 for building its data files. This requirement has been postponed to a future release." configure.ac of ICU 64.2 contains: """ # TODO(ICU-20301): Remove fallback to Python 2. AC_CHECK_PROGS(PYTHON, python3 "py -3" python "py") AC_SUBST(PYTHON) """ So Python 3 is preferred but there is some fallback to Python 2. Python 3 is widely available, so not supporting Python 2 in dev-libs/icu ebuilds will not be a problem. configure.ac of ICU 64.2 contains: """ if test -z "$PYTHON"; then echo "" > data/rules.mk echo "" > test/testdata/rules.mk else if test -f "$srcdir/data/locales/root.txt"; then echo "Spawning Python to generate data/rules.mk..." PYTHONPATH="$srcdir/data" $PYTHON -m buildtool \ --mode gnumake \ --seqmode parallel \ --src_dir "$srcdir/data" \ --filter_file "$ICU_DATA_FILTER_FILE" \ $ICU_DATA_BUILDTOOL_OPTS \ > data/rules.mk if test "$?" != "0"; then AC_MSG_ERROR(Python failed to run; see above error.) fi else echo "Not rebuilding data/rules.mk, assuming prebuilt data in data/in" touch data/rules.mk fi echo "Spawning Python to generate test/testdata/rules.mk..." PYTHONPATH="$srcdir/test/testdata:$srcdir/data" $PYTHON -m buildtool \ --mode gnumake \ --seqmode parallel \ --src_dir "$srcdir/test/testdata" \ > test/testdata/rules.mk if test "$?" != "0"; then AC_MSG_ERROR(Python failed to run; see above error.) fi fi """ This might seem like Python is optional with FEATURES="-test", but actually prebuilt data in data/in directory are distributed only for little-endian architectures (icudt64l.dat). Effectively Python is unconditionally required for big-endian architectures.
Created attachment 577734 [details, diff] Patch
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=07188077c30eed8ba772b325af3c58017d9d6f0b commit 07188077c30eed8ba772b325af3c58017d9d6f0b Author: Arfrever Frehtes Taifersar Arahesis <Arfrever@Apache.Org> AuthorDate: 2019-05-24 23:17:31 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2019-05-25 21:47:40 +0000 dev-libs/icu: Add dependency on Python 3 Move app-doc/doxygen to BDEPEND. Closes: https://bugs.gentoo.org/686658 Signed-off-by: Arfrever Frehtes Taifersar Arahesis <Arfrever@Apache.Org> Signed-off-by: Andreas Sturmlechner <asturm@gentoo.org> dev-libs/icu/icu-64.2.ebuild | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
