osmith has uploaded this change for review.

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testenv: init: check distro argument early

Check the --distro argument and print a proper error, instead of failing
later on with a stack trace if it is unsupported.

Change-Id: I9d51c2b236f10f4c10e991873df47b4f3297e6e1
---
M _testenv/testenv/__init__.py
1 file changed, 9 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/osmo-ttcn3-hacks refs/changes/85/43085/1

diff --git a/_testenv/testenv/__init__.py b/_testenv/testenv/__init__.py
index b9ec676..0f70f8a 100644
--- a/_testenv/testenv/__init__.py
+++ b/_testenv/testenv/__init__.py
@@ -260,6 +260,14 @@
         args.podman = False
 
 
+def verify_args_init():
+    if args.action != "init":
+        return
+
+    if args.distro and args.distro not in distros_repodirs:
+        raise NoTraceException(f"--distro must be one of {', '.join(distros_repodirs)}")
+
+
 def verify_args_run():
     if args.action != "run":
         return
@@ -304,6 +312,7 @@
 
 def init_args():
     parse_args()
+    verify_args_init()
     verify_args_run()
     set_args_defaults()
 

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