X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=src%2Fpython-lttngust%2Fsetup.py.in;h=b11be1d9a09e11770b9c7b0c7a5ee8b74575f4cb;hb=b5d90d0b363db46ec5b583a2604309c5ef4b8938;hp=c5ce059b5a4df935051537aef16126e381cd4379;hpb=a3ff547e7a1a4eff8cac7a5828d87b1c5c105c8e;p=lttng-ust.git

diff --git a/src/python-lttngust/setup.py.in b/src/python-lttngust/setup.py.in
index c5ce059b..b11be1d9 100644
--- a/src/python-lttngust/setup.py.in
+++ b/src/python-lttngust/setup.py.in
@@ -12,6 +12,28 @@ if sys.version_info < (3, 12):
 else:
     from setuptools import setup, Extension
 
+# Starting with Debian's Python 3.10, the default install scheme is
+# 'posix_local' which is a Debian specific scheme based on 'posix_prefix' but
+# with an added 'local' prefix. This is the default so users doing system wide
+# manual installations of python modules end up in '/usr/local'. This
+# interferes with our autotools based install which already defaults to
+# '/usr/local' and expect a provided prefix to be used verbatim.
+#
+# Monkeypatch sysconfig to override this scheme and use 'posix_prefix' instead.
+if sys.version_info >= (3, 10):
+    import sysconfig
+
+    original_get_preferred_scheme = sysconfig.get_preferred_scheme
+
+    def our_get_preferred_scheme(key):
+        scheme = original_get_preferred_scheme(key)
+        if scheme == "posix_local":
+            return "posix_prefix"
+        else:
+            return scheme
+
+    sysconfig.get_preferred_scheme = our_get_preferred_scheme
+
 PY_PATH_WARN_MSG = """
 -------------------------------------WARNING------------------------------------
 The install directory used:\n ({0})\nis not included in your PYTHONPATH.