python-rpm-macros/macros.python
Miro Hrončok 5b578a851f Set $RPM_BUILD_ROOT in %{python3_...} macros, for alternate sysconfig install scheme
Our Pythons currently patches distutils to install packages to
/usr/lib(64)/pythonX.Y/site-packages when the $RPM_BUILD_ROOT environment
variable is set (and to /usr/local/lib(64)/pythonX.Y/site-packages otherwise).
With the deprecation of distutils [1] we want to change the patch to create
and use a different sysconfig install scheme [2].

However, we have realized that macros defined as %(%{__python3} ...) don't
"see" the environment variables set by rpmbuild because they are expanded earlier
and hence e.g. %{python3_sitelib} evaluates to
/usr/local/lib/python3.X/site-packages -- which is not desired.
To be able to reliably detect an RPM build environment by checking
the presence of the $RPM_BUILD_ROOT environment variable,
we manually set it in the macro definitions.

Since %{buildroot} in not fully populated
(e.g. it can expand literally to
/home/anna/rpmbuild/BUILDROOT/%{NAME}-%{VERSION}-%{RELEASE}.x86_64),
we don't use it here.
The variable simply needs to present in the environment.

See also the analysis of the build failures when this is not done [3].

[1] https://www.python.org/dev/peps/pep-0632/
[2] https://bugs.python.org/issue43976
[3] https://src.fedoraproject.org/rpms/python3.10/pull-request/63#comment-79042
2021-09-17 16:56:20 +02:00

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# unversioned macros: used with user defined __python, no longer part of rpm >= 4.15
# __python is defined to error by default in the srpm macros
# nb: $RPM_BUILD_ROOT is not set when the macros are expanded (at spec parse time)
# so we set it manually (to empty string), making our Python prefer the correct install scheme location
%python_sitelib %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_path('purelib'))")
%python_sitearch %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_path('platlib'))")
%python_version %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}'.format(sys.version_info))")
%python_version_nodots %(RPM_BUILD_ROOT= %{__python} -Esc "import sys; sys.stdout.write('{0.major}{0.minor}'.format(sys.version_info))")
%python_platform %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_platform())")
%python_platform_triplet %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_config_var('MULTIARCH'))")
%python_ext_suffix %(RPM_BUILD_ROOT= %{__python} -Esc "import sysconfig; print(sysconfig.get_config_var('EXT_SUFFIX'))")
%py_setup setup.py
%py_shbang_opts -s
%py_shbang_opts_nodash %(opts=%{py_shbang_opts}; echo ${opts#-})
%py_shebang_flags %(opts=%{py_shbang_opts}; echo ${opts#-})
%py_shebang_fix %{expand:\\\
if [ -f /usr/bin/pathfix%{python_version}.py ]; then
pathfix=/usr/bin/pathfix%{python_version}.py
else
# older versions of Python don't have it and must BR /usr/bin/pathfix.py from python3-devel explicitly
pathfix=/usr/bin/pathfix.py
fi
if [ -z "%{?py_shebang_flags}" ]; then
shebang_flags="-k"
else
shebang_flags="-ka%{py_shebang_flags}"
fi
$pathfix -pni %{__python} $shebang_flags}
# Use the slashes after expand so that the command starts on the same line as
# the macro
%py_build() %{expand:\\\
CFLAGS="${CFLAGS:-${RPM_OPT_FLAGS}}" LDFLAGS="${LDFLAGS:-${RPM_LD_FLAGS}}"\\\
%{__python} %{py_setup} %{?py_setup_args} build --executable="%{__python} %{py_shbang_opts}" %{?*}
}
%py_build_egg() %{expand:\\\
CFLAGS="${CFLAGS:-${RPM_OPT_FLAGS}}" LDFLAGS="${LDFLAGS:-${RPM_LD_FLAGS}}"\\\
%{__python} %{py_setup} %{?py_setup_args} bdist_egg %{?*}
}
%py_build_wheel() %{expand:\\\
CFLAGS="${CFLAGS:-${RPM_OPT_FLAGS}}" LDFLAGS="${LDFLAGS:-${RPM_LD_FLAGS}}"\\\
%{__python} %{py_setup} %{?py_setup_args} bdist_wheel %{?*}
}
%py_install() %{expand:\\\
CFLAGS="${CFLAGS:-${RPM_OPT_FLAGS}}" LDFLAGS="${LDFLAGS:-${RPM_LD_FLAGS}}"\\\
%{__python} %{py_setup} %{?py_setup_args} install -O1 --skip-build --root %{buildroot} %{?*}
rm -rfv %{buildroot}%{_bindir}/__pycache__
}
%py_install_egg() %{expand:\\\
mkdir -p %{buildroot}%{python_sitelib}
%{__python} -m easy_install -m --prefix %{buildroot}%{_prefix} -Z dist/*-py%{python_version}.egg %{?*}
rm -rfv %{buildroot}%{_bindir}/__pycache__
}
%py_install_wheel() %{expand:\\\
%{__python} -m pip install -I dist/%{1} --root %{buildroot} --no-deps --no-index --no-warn-script-location
rm -rfv %{buildroot}%{_bindir}/__pycache__
for distinfo in %{buildroot}%{python_sitelib}/*.dist-info %{buildroot}%{python_sitearch}/*.dist-info; do
if [ -f ${distinfo}/direct_url.json ]; then
rm -fv ${distinfo}/direct_url.json
sed -i '/direct_url.json/d' ${distinfo}/RECORD
fi
done
}
# With $PATH and $PYTHONPATH set to the %%buildroot,
# try to import the given Python module(s).
# Useful as a smoke test in %%check when running tests is not feasible.
# Use spaces or commas as separators.
%py_check_import() %{expand:\\\
(cd %{_topdir} &&\\\
PATH="%{buildroot}%{_bindir}:$PATH"\\\
PYTHONPATH="${PYTHONPATH:-%{buildroot}%{python_sitearch}:%{buildroot}%{python_sitelib}}"\\\
PYTHONDONTWRITEBYTECODE=1\\\
%{__python} -c "import %{lua:local m=rpm.expand('%{?*}'):gsub('[%s,]+', ', ');print(m)}"
)
}
%python_provide() %{lua:
local python = require "fedora.srpm.python"
function string.starts(String,Start)
return string.sub(String,1,string.len(Start))==Start
end
local package = rpm.expand("%{?1}")
local vr = rpm.expand("%{?epoch:%{epoch}:}%{version}-%{release}")
local provides = python.python_altprovides(package, vr)
local default_python3_pkgversion = rpm.expand("%{__default_python3_pkgversion}")
if (string.starts(package, "python3-")) then
for i, provide in ipairs(provides) do
print("\\nProvides: " .. provide)
end
--Obsoleting the previous default python package (if it doesn't have isa)
if (string.sub(package, "-1") ~= ")") then
print("\\nObsoletes: python-")
print(string.sub(package,9,string.len(package)))
print(" < " .. vr)
end
elseif (string.starts(package, "python" .. default_python3_pkgversion .. "-")) then
for i, provide in ipairs(provides) do
print("\\nProvides: " .. provide)
end
--Obsoleting the previous default python package (if it doesn't have isa)
if (string.sub(package, "-1") ~= ")") then
print("\\nObsoletes: python-")
print(string.sub(package,8+string.len(default_python3_pkgversion),string.len(package)))
print(" < " .. vr)
end
elseif (string.starts(package, "python")) then
--No unversioned provides as other python3 cases are not the default
elseif (string.starts(package, "pypy")) then
--No unversioned provides as pypy is not default either
else
print("%python_provide: ERROR: ")
print(package)
print(" not recognized.")
end
}
%python_disable_dependency_generator() \
%undefine __pythondist_requires \
%{nil}