Hi,
Interestingly I faced the same trouble on an Ubuntu (mantic) system recently.
```
$ cvs --version
Concurrent Versions System (CVS) 1.12.13-MirDebian-28 (client/server)
Copyright (C) 2005 Free Software Foundation, Inc.
Copyright (c) 2021 mirabilos <m...@mirbsd.org>
Senior no longer active maintainers include Larry Jones, Derek R. Price,
and Mark D. Baushke. Please see the AUTHORS and README files from the CVS
distribution kit for a complete list of contributors and copyrights.
CVS may be copied only under the terms of the GNU General Public License,
a copy of which can be found with the CVS distribution kit.
Specify the --help option for further information about CVS
```
Using :extssh: is working but no more is :ext:.
So I needed to modify settings from the second to the first.
No $CVS* env and no ~/.cvsrc file in my session.
Here is what I am getting:
```
$ cvs -nttt -d:ext:MASKED1:MASKED2 co MASKED3
-> main: Session ID is 1006496ADEB4BADE746
-> parse_cvsroot (:ext:MASKED1:MASKED2)
-> walklist ( list=0x563e3a553290, proc=0x563e38b89dc0, closure=(nil) )
-> main loop with CVSROOT=MASKED2
-> safe_location( where=(null) )
-> open_connection_to_server (:ext:MASKED1:MASKED2)
-> Starting server: rsh -- MASKED1 cvs server
cvs [checkout aborted]: cannot exec rsh: No such file or directory
cvs [checkout aborted]: end of file from server (consult above messages if any)
```
contrary to:
```
$ cvs -nttt -d:extssh:MASKED1:MASKED2 co MASKED3
-> main: Session ID is 1006496AE034BB269BC
-> parse_cvsroot (:extssh:MASKED1:MASKED2)
-> walklist ( list=0x55c1108f9290, proc=0x55c110793dc0, closure=(nil) )
-> main loop with CVSROOT=MASKED2
-> safe_location( where=(null) )
-> open_connection_to_server (:extssh:MASKED1:MASKED2)
-> Starting server: ssh -- MASKED1 cvs server
-> walklist ( list=(nil), proc=0x55c1107726f0, closure=(nil) )
S -> serve_directory (.)
S -> dirswitch (., MASKED2)
S -> my_module (MASKED3, Updating, NULL, NULL)
S -> serve_directory (.)
S -> dirswitch (., MASKED2)
S -> do_cvs_command (checkout)
S -> server_notify()
S -> CVS_SERVER_SLEEP not set.
S -> safe_location( where=(null) )
S -> my_module (MASKED3, Updating, NULL, NULL)
S -> checkout_proc ((null), (null), (null), 0, 0, MASKED3, Updating)
S -> Create_Admin (., MASKED3, MASKED2/MASKED3, , , 0, 0, 1)
S -> do_update ((null), (null), (null), 1, 0, 1, 0, 0, 0, 3, (null),
(null), (null), (null), MASKED3, 1, MASKED2/MASKED3)
S -> start_recursion ( fileproc=0x5641cfd6b9b0, filesdoneproc=0x5641cfd6acd0,
direntproc=0x5641cfd6a950, dirleavproc=0x5641cfd6e5f0,
callerdat=(nil), argc=0, argv=(nil),
local=0, which=3, aflag=0,
locktype=1, update_preload=MASKED3
dosrcs=1, repository_in=MASKED2/MASKED3 )
cvs checkout: in directory MASKED3:
cvs [checkout aborted]: there is no version here; run 'cvs checkout' first
S -> Lock_Cleanup()
S -> remove_locks()
S -> Simple_Lock_Cleanup()
S -> server_cleanup()
-> close_connection_to_server ()
S -> Lock_Cleanup()
S -> remove_locks()
S -> Simple_Lock_Cleanup()
S -> server_cleanup()
-> walklist ( list=0x55c1108f9290, proc=0x55c110793dc0, closure=(nil) )
```
I don't know if it helps.
Thanks,
Patrice
