template package removal failing - make template package removal code more resilient

[adrelanos]

Qubes OS version (e.g., R3.2):

R4 RV1

Affected TemplateVMs (e.g., fedora-23, if applicable):

dom0

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Steps to reproduce the behavior:

1. Not sure. Start from a "messed up" state. In my case tmp-tmp-debian-8 existed but debian-8 not (as a follow up issue of #3153). Or force remove (perhaps with illegal developer-only method) the debian-8 template behind qvm tools back.

sudo dnf remove qubes-template-debian-8

sudo qubes-dom0-update --action=reinstall qubes-template-debian-8 also fails.

Expected behavior:

Package should be removed anyhow.

Actual behavior:

Package not removed because rpm prerun scriptlet fails. It fails because it runs qvm-shutrun debian-8 which fails since there is no such template.

[marmarek]

Just happened to me exactly the same. Workaround: rpm -e --noscripts qubes-template-debian-8, then install package with qubes-dom0-update normally.

[marmarek]

Just happened to me exactly the same. Workaround: rpm -e --noscripts qubes-template-debian-8, then install package with qubes-dom0-update normally.