I've been trying to add tmux to my snap to provide separate command line
environments to each of several processes in the snap (the target is
Ubuntu-core). It builds OK but it fails silently upon execution (by silent I
mean no appArmor denials or error messages in journalctl or syslog). The tmux
log indicates "fatal: tcgetattr failed: Bad file descriptor", and I believe it
is trying to access the session TTY ("client 0x10e9590 IDENTIFY_ENVIRON
SSH_TTY=/dev/pts/1") . This behavior is consistent on ubuntu-core,
core+classic, and ubuntu server.
Before delving further into tmux code I'd like to know if there is some basic
restriction preventing this from working - is the console session off limits to
snaps ? I noticed some early attempts at snapping tmux on github, but none
of them seem to have been successful. Has anyone tried this, or can perhaps
offer any advice ?
Thanks,
Joe Coates
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