commit:     012e58054c1cb7a2f65a3959c8f42f191862585f
Author:     Eli Schwartz <eschwartz <AT> gentoo <DOT> org>
AuthorDate: Fri Apr 18 18:35:18 2025 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Sat Apr 19 00:22:55 2025 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=012e5805

metadata/install-qa-check.d: fix python checks for non-distutils software

The existing check makes an intimidating value proposition: that all
software being checked was installed using distutils-r1.eclass, hence
moving the check from there as-is to a new home is sufficient. This
includes the use of functions specific to the distutils-r1 eclass
inheritance chain. In particular, get_modname is part of
multilib.eclass, which distutils-r1 inherits, but python-single-r1 does
not inherit.

This results in the following QA warning:

```
/var/db/repos/gentoo/metadata/install-qa-check.d/60python-site: line 53: 
get_modname: command not found
/var/db/repos/gentoo/metadata/install-qa-check.d/60python-site: line 53: 
get_modname: command not found
/var/db/repos/gentoo/metadata/install-qa-check.d/60python-site: line 53: 
get_modname: command not found
 * Verifying compiled files for python3.12
 *
 * QA Notice: Extensions found compiled for the wrong Python version
 * (likely broken build isolation):
 *
 *   /usr/lib/python3.12/site-packages/__pycache__/init_calibre.cpython-312.pyc
 *   
/usr/lib/python3.12/site-packages/__pycache__/init_calibre.cpython-312.opt-1.pyc
 *   
/usr/lib/python3.12/site-packages/__pycache__/init_calibre.cpython-312.opt-2.pyc
```

because we are matching all files matching "*.cpython*" that are also
named "*" instead of all files named "*$(get_modname)".

Instead of using multilib.eclass, go directly to the preferred canonical
source, and query cpython what *it* thinks a module extension should be.
This is also more flexible since cpython itself doesn't really guarantee
that extension modules are named anything like get_modname, but
generally equals -- for backwards compatibility -- the final value from
`_PyImport_DynLoadFiletab` / `_imp.extension_suffixes()` (and on
Windows, that is .pyd instead of .dll, though admittedly,
sysconfig.get_config_vars is pretty empty there; on the other hand, PyPy
doesn't recognize unadorned .so because it doesn't need the
compatibility, so we see that it's not really a guarantee, and might as
well go for the sysconfig variable which is unambiguous where present).

Signed-off-by: Eli Schwartz <eschwartz <AT> gentoo.org>
Signed-off-by: Sam James <sam <AT> gentoo.org>

 metadata/install-qa-check.d/60python-site | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/metadata/install-qa-check.d/60python-site 
b/metadata/install-qa-check.d/60python-site
index 3791fa80ecdd..49d4b3a1a830 100644
--- a/metadata/install-qa-check.d/60python-site
+++ b/metadata/install-qa-check.d/60python-site
@@ -75,6 +75,13 @@ python_site_check() {
                local sitedir=( "${pydir}"/site-packages )
                [[ -d ${sitedir} ]] || continue
 
+               local modname=$(
+                       "${impl}" - <<-EOF
+                               import sysconfig
+                               print(sysconfig.get_config_var("SHLIB_SUFFIX"))
+                       EOF
+               )
+
                # check for bad package versions
                while IFS= read -d $'\0' -r f; do
                        bad_versions+=( "${f#${ED}}" )
@@ -107,7 +114,7 @@ python_site_check() {
                                        -name '*.pth' -o \
                                        -name '*.py' -o \
                                        -name '*.pyi' -o \
-                                       -name "*$(get_modname)" -o \
+                                       -name "*${modname}" -o \
                                        -name 'README.txt' \
                                ')' -print0
                )
@@ -130,8 +137,8 @@ python_site_check() {
                        wrong_ext+=( "${f#${ED}}" )
                done < <(
                        find "${sitedir}" '(' \
-                               -name "*.pypy*$(get_modname)" -o \
-                               -name "*.cpython*$(get_modname)" \
+                               -name "*.pypy*${modname}" -o \
+                               -name "*.cpython*${modname}" \
                                ')' -a '!' -name "*${ext_suffix}" -print0
                )
 

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