Change default prefixdir for python module not for program

[WangZhongDian]

Xmake 版本

3.0.6

操作系统版本和架构

ubuntu24.4

描述问题

xmake的默认行为将so文件安装到了.venv/lib目录,这导致pip wheel包后无法导入，虽然我查看了#1 可以通过
set_prefixdir修改安装位置

add_rules("mode.debug","mode.release")
add_rules("plugin.compile_commands.autoupdate", {outputdir="build"})

add_requires("python")

target("_myadd")
    add_rules("python.module")
    set_prefixdir("$(prefixdir)/$(pythondir)", { libdir = "", bindir = "" })
    add_files("src/myadd/add.c")
    add_packages("python")

只有明确指定了前缀目录才能安装到正确的.venv/lib/python3.13/site-packages目录,这不算麻烦，但是这不人性化

可能的方案

如果可以在add_rules("python.module")中提前预设，如果能在xmake_python的构建系统上能做到的话更好，因为add_rules("python.module")规则可能还用于其他，可能造成影响。

期待的结果

默认行为就安装到正确位置.venv/lib/python3.13/site-packages 而不是.venv/lib

工程配置

add_rules("mode.debug","mode.release")
add_rules("plugin.compile_commands.autoupdate", {outputdir="build"})

add_requires("python")

target("_myadd")
    add_rules("python.module")
    -- set_prefixdir("$(prefixdir)/$(pythondir)", { libdir = "myadd", bindir = "" })
    add_files("src/myadd/add.c")
    add_packages("python")

不指定的默认行为也应该正确

附加信息和错误日志

无

[Freed-Wu]

See https://github.com/xmake-io/xmake-python/blob/main/tests/examples/xmake/program/xmake.lua#L9-L10

If we change the default setting to ignore https://github.com/xmake-io/xmake-python/blob/main/tests/examples/xmake/cython/xmake.lua#L6 , https://github.com/xmake-io/xmake-python/blob/main/tests/examples/xmake/program/xmake.lua#L9-L10 will fail.
Currently, we don't have any methods to support both of them to keep back compatibility.