Mosh
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Troubleshooting
Missing /run/user/1000
Using a mosh session, $XDG_RUNTIME_DIR (/run/user/1000) doesn't exist and causes issues such as:
- nix-shell failing with
Error in tempdir() using /run/user/1000/nix-shell.XXXXX
This is caused by the way mosh handles logging-in to the system, the login is actually handled by a short ssh session, which ends immediately. logind, as it is used, closes the user's session and cleans up behind, since there is no loingering configured by default.
As a workaround, it is possible to set an alias in the user's shell wrapping mosh-server to keep the session around.[1]
alias mosh-server = "systemd-run --user --scope mosh-server"
See https://github.com/NixOS/nixpkgs/issues/3702#issue-40762878 for alternative option