[libgpiod][PATCH] bindings: python: fix package installation with Makefile build

[Bartosz Golaszewski <brgl@xxxxxxxx>]

From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>

The modules are installed in the .egg directory, and therefore cannot be
imported after that. Additionally PIP tries to remove the global gpiod
module if it's not invoked with the --ignore-installed option.

Specify correct --root and fix the --prefix switch.

Link: https://github.com/pypa/pip/issues/3063
Suggested-by: Maxim Devaev <mdevaev@xxxxxxxxx>
Reported-by: Maxim Devaev <mdevaev@xxxxxxxxx>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx>
---
 bindings/python/Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bindings/python/Makefile.am b/bindings/python/Makefile.am
index 804b214..65964c7 100644
--- a/bindings/python/Makefile.am
+++ b/bindings/python/Makefile.am
@@ -36,7 +36,7 @@ all-local: python-tests
 
 install-exec-local:
 	$(PYTHON) -m pip install dist/*.whl \
-	--prefix=$(DESTDIR)$(prefix)
+	--ignore-installed --prefix=$(prefix) --root=$(if $(DESTDIR),$(DESTDIR),/)
 
 SUBDIRS = gpiod
 
-- 
2.40.1