Signed-off-by: Michał Górny <[email protected]>
---
eclass/distutils-r1.eclass | 110 +++++++++++++++++++++----------------
1 file changed, 63 insertions(+), 47 deletions(-)
diff --git a/eclass/distutils-r1.eclass b/eclass/distutils-r1.eclass
index 2b5acb09d926..81eea83c67b3 100644
--- a/eclass/distutils-r1.eclass
+++ b/eclass/distutils-r1.eclass
@@ -922,6 +922,68 @@ _distutils-r1_backend_to_key() {
esac
}
+# @FUNCTION: _distutils-r1_get_backend
+# @INTERNAL
+# @DESCRIPTION:
+# Read (or guess, in case of setuptools) the build-backend
+# for the package in the current directory.
+_distutils-r1_get_backend() {
+ debug-print-function ${FUNCNAME} "${@}"
+
+ local build_backend
+ if [[ -f pyproject.toml ]]; then
+ # if pyproject.toml exists, try getting the backend from it
+ # NB: this could fail if pyproject.toml doesn't list one
+ build_backend=$("${EPYTHON}" -c 'import tomli; \
+ print(tomli.load(open("pyproject.toml", "rb")) \
+ ["build-system"]["build-backend"])' 2>/dev/null)
+ fi
+ if [[ -z ${build_backend} && ${DISTUTILS_USE_PEP517} == setuptools &&
+ -f setup.py ]]
+ then
+ # use the legacy setuptools backend as a fallback
+ build_backend=setuptools.build_meta:__legacy__
+ fi
+ if [[ -z ${build_backend} ]]; then
+ die "Unable to obtain build-backend from pyproject.toml"
+ fi
+
+ if [[ ${DISTUTILS_USE_PEP517} != standalone ]]; then
+ # verify whether DISTUTILS_USE_PEP517 was set correctly
+ local expected_value=$(_distutils-r1_backend_to_key
"${build_backend}")
+ if [[ ${DISTUTILS_USE_PEP517} != ${expected_value} ]]; then
+ eerror "DISTUTILS_USE_PEP517 does not match
pyproject.toml!"
+ eerror " have:
DISTUTILS_USE_PEP517=${DISTUTILS_USE_PEP517}"
+ eerror "expected:
DISTUTILS_USE_PEP517=${expected_value}"
+ eerror "(backend: ${build_backend})"
+ die "DISTUTILS_USE_PEP517 value incorrect"
+ fi
+
+ # fix deprecated backends up
+ local new_backend=
+ case ${build_backend} in
+ flit.buildapi)
+ new_backend=flit_core.buildapi
+ ;;
+ poetry.masonry.api)
+ new_backend=poetry.core.masonry.api
+ ;;
+ esac
+
+ if [[ -n ${new_backend} ]]; then
+ if [[ ! -f ${T}/.distutils_deprecated_backend_warned
]]; then
+ eqawarn "${build_backend} backend is
deprecated. Please see:"
+ eqawarn
"https://projects.gentoo.org/python/guide/distutils.html#deprecated-pep-517-backends";
+ eqawarn "The eclass will be using
${new_backend} instead."
+ > "${T}"/.distutils_deprecated_backend_warned
|| die
+ fi
+ build_backend=${new_backend}
+ fi
+ fi
+
+ echo "${build_backend}"
+}
+
# @FUNCTION: distutils-r1_python_compile
# @USAGE: [additional-args...]
# @DESCRIPTION:
@@ -968,53 +1030,7 @@ distutils-r1_python_compile() {
local -x WHEEL_BUILD_DIR=${BUILD_DIR}/wheel
mkdir -p "${WHEEL_BUILD_DIR}" || die
- local build_backend
- if [[ -f pyproject.toml ]]; then
- build_backend=$("${EPYTHON}" -c 'import tomli; \
- print(tomli.load(open("pyproject.toml", "rb")) \
- ["build-system"]["build-backend"])'
2>/dev/null)
- fi
- if [[ -z ${build_backend} && ${DISTUTILS_USE_PEP517} ==
setuptools &&
- -f setup.py ]]
- then
- # use the legacy setuptools backend
- build_backend=setuptools.build_meta:__legacy__
- fi
- [[ -z ${build_backend} ]] &&
- die "Unable to obtain build-backend from pyproject.toml"
-
- if [[ ${DISTUTILS_USE_PEP517} != standalone ]]; then
- local expected_value=$(_distutils-r1_backend_to_key
"${build_backend}")
- if [[ ${DISTUTILS_USE_PEP517} != ${expected_value} ]];
then
- eerror "DISTUTILS_USE_PEP517 does not match
pyproject.toml!"
- eerror " have:
DISTUTILS_USE_PEP517=${DISTUTILS_USE_PEP517}"
- eerror "expected:
DISTUTILS_USE_PEP517=${expected_value}"
- eerror "(backend: ${build_backend})"
- die "DISTUTILS_USE_PEP517 value incorrect"
- fi
-
- # fix deprecated backends up
- local new_backend=
- case ${build_backend} in
- flit.buildapi)
- new_backend=flit_core.buildapi
- ;;
- poetry.masonry.api)
- new_backend=poetry.core.masonry.api
- ;;
- esac
-
- if [[ -n ${new_backend} ]]; then
- if [[ ! ${_DISTUTILS_DEPRECATED_BACKEND_WARNED}
]]; then
- eqawarn "${build_backend} backend is
deprecated. Please see:"
- eqawarn
"https://projects.gentoo.org/python/guide/distutils.html#deprecated-pep-517-backends";
- eqawarn "The eclass will be using
${new_backend} instead."
- _DISTUTILS_DEPRECATED_BACKEND_WARNED=1
- fi
- build_backend=${new_backend}
- fi
- fi
-
+ local build_backend=$(_distutils-r1_get_backend)
einfo " Building the wheel via ${build_backend}"
"${EPYTHON}" -c "import ${build_backend%:*}; \
import os; \
--
2.35.1
