python/python3-meson-opt: README fixes.

Applying fixes for current even though they are not needed, but for
consistency.

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

python/python3-meson-opt/README

@@ -7,11 +7,12 @@ build definitions are written in a simple non-Turing complete DSL.
 
 NOTE: 
   Install bin and docs to /opt/meson
-  Installs module to /opt/python3.9/site-packages
+  Installs module to /opt/python$PYVER/site-packages
 
 Add the following before the python3 build commands in your
 Slackbuild to use this version over the stock one in 15.0.  My testing
 has shown the newer meson bin does not need to be added to PATH, but
 YMMV:
 
-export PYTHONPATH=/opt/python3.9/site-packages/
+PYVER=$(python3 -c 'import sys; print("%d.%d" % sys.version_info[:2])')
+export PYTHONPATH=/opt/python$PYVER/site-packages

python/python3-meson-opt/python3-meson-opt.SlackBuild

@@ -65,12 +65,14 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+
 
+PYVER=$(python3 -c 'import sys; print("%d.%d" % sys.version_info[:2])')
+
 python3 -m build --no-isolation
 python3 -m installer -d "$PKG" -p "opt/meson" dist/*.whl
 
 if [ "$PKG/opt/" != "/opt/" ]; then
   mkdir -p $PKG/opt
-  mv $PKG/opt/meson/lib*/python3.9 $PKG/opt/
+  mv $PKG/opt/meson/lib*/python$PYVER $PKG/opt/
   rmdir $PKG/opt/meson/lib*
 fi