Error with svn when http proxy is used.

[achaios]

I get the following error when trying to run services in local obs instance where XXX_proxy env variables are set.
I guess it's a python 3 issue when using "wb" flags, but I don't know how to fix it.
Using just a "w" flag, also fails in a different fashion.
(Version 0.10.16.1595245235.15a0df2)

Files could not be expanded: service error: TypeError: a bytes-like object is required, not 'str' less info

service obs_scm failed:
Traceback (most recent call last):
File "/usr/lib/obs/service//obs_scm", line 30, in
main()
File "/usr/lib/obs/service//obs_scm", line 26, in main
TarSCM.run()
File "/usr/lib/obs/service/TarSCM/__init__.py", line 39, in run
task_list.process_list()
File "/usr/lib/obs/service/TarSCM/tasks.py", line 118, in process_list
self.process_single_task(task)
File "/usr/lib/obs/service/TarSCM/tasks.py", line 184, in process_single_task
scm_object.fetch_upstream()
File "/usr/lib/obs/service/TarSCM/scm/base.py", line 147, in fetch_upstream
self.fetch_upstream_scm()
File "/usr/lib/obs/service/TarSCM/scm/svn.py", line 87, in fetch_upstream_scm
command = self._get_scm_cmd() + ['checkout', '--non-interactive',
File "/usr/lib/obs/service/TarSCM/scm/svn.py", line 38, in _get_scm_cmd
cfg.write('[global]\n')
TypeError: a bytes-like object is required, not 'str'

[reusch]

I just stumbled upon this issue and solved it for me by doing the following:

--- svn.py.orig 2022-10-10 15:48:18.000000000 +0200
+++ /usr/lib/obs/service/TarSCM/scm/svn.py      2022-10-10 15:51:49.549308247 +0200
@@ -37,3 +37,3 @@
             cfg = open(self.svntmpdir + "/servers", "wb")
-            cfg.write('[global]\n')
+            cfg.write('[global]\n'.encode('utf-8'))

@@ -48,3 +48,3 @@
                 logging.debug('using proxy host: %s', proxy_host)
-                cfg.write('http-proxy-host=' + proxy_host + '\n')
+                cfg.write(('http-proxy-host=' + proxy_host + '\n').encode('utf-8'))

@@ -52,3 +52,3 @@
                 logging.debug('using proxy port: %s', proxy_port)
-                cfg.write('http-proxy-port=' + proxy_port + '\n')
+                cfg.write(('http-proxy-port=' + proxy_port + '\n').encode('utf-8'))

@@ -74,3 +74,3 @@
             logging.debug('no_proxy string = %s', no_proxy_string)
-            cfg.write('http-proxy-exceptions=' + no_proxy_string)
+            cfg.write(('http-proxy-exceptions=' + no_proxy_string).encode('utf-8'))
             cfg.close()

I don't know if this is the correct encoding for the SVN servers file, but it seems to works for us.