[Debian Testing] Unable to update Insync via apt

Bugs and issues Linux
5

Your command:

tail -n +8 /var/lib/dpkg/info/insync.postinst | head -n -3 | python -

is without output, maybe the syntax of tail is not correct:

-n, --lines=[+]NUM
              output the last NUM lines, instead of the last 10; or use -n +NUM to output starting with line NUM

But the command:

tail -n8 /var/lib/dpkg/info/insync.postinst

show incomplete python script:

    f.write('\n'.join(lines))

increase_inotify_watches()

open("/usr/lib/insync/from_deb", "w").close()

EOF
exit 0

so the complete command go in error:

tail -n8 /var/lib/dpkg/info/insync.postinst | head -n -3 | python -

  File "<stdin>", line 1
    f.write('\n'.join(lines))
    ^
IndentationError: unexpected indent