osmith has uploaded this change for review.

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testenv: enable_binary_repo: configure apt pin

Add an apt-pin to ensure packages from the Osmocom repositories get
preferred over Debian's packages. I just ran into this with osmo-mgw,
where we have 1.4.0 in osmocom:latest and Debian 13 has 1.14.0+dfsg1-2,
which counts as higher version. This results in the wrong package being
selected, and also in an error later on when trying to install related
debug packages from our repository:

  The following packages have unmet dependencies:
   osmo-mgw-dbgsym : Depends: osmo-mgw (= 1.14.0) but 1.14.0+dfsg1-2 is to be installed

Change-Id: I3a45de277bbd5299c8b840680b56b52a8731caa4
---
M _testenv/testenv/podman.py
1 file changed, 9 insertions(+), 2 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/48/40948/1

diff --git a/_testenv/testenv/podman.py b/_testenv/testenv/podman.py
index bc45b3a..678a0c1 100644
--- a/_testenv/testenv/podman.py
+++ b/_testenv/testenv/podman.py
@@ -301,16 +301,23 @@
 
 
 def enable_binary_repo():
+    # Add the binary repository
     config = "deb [signed-by=/obs.key]"
     config += " https://downloads.osmocom.org/packages/"
     config += testenv.args.binary_repo.replace(":", ":/")
     config += "/"
     config += testenv.distros_repodirs[distro]
     config += "/ ./"
-
     path = "/etc/apt/sources.list.d/osmocom.list"
-
     exec_cmd(["sh", "-c", f"echo {shlex.quote(config)} > {path}"])
+
+    # Add an apt-pin to prefer its packages
+    config = "Package: *\n"
+    config += 'Pin: origin "downloads.osmocom.org"\n'
+    config += "Pin-Priority: 1100\n"
+    path = "/etc/apt/preferences.d/osmocom-apt-pin"
+    exec_cmd(["sh", "-c", f"echo {shlex.quote(config)} > {path}"])
+
     exec_cmd(["apt-get", "-q", "update"])
 
 

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