nemo-3.4.7-2 changes Firefox download handling in Fedora 25 minimal template

[mvermaes]

Qubes OS version

R3.2

Affected TemplateVMs

fedora-25-minimal

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Expected behavior

Firefox downloads open with the default file manager (Nautilus)

Actual behavior

After updating to nemo-3.4.7-2.fc25.x86_64, Firefox downloads are now opened in Nemo instead. This means Qubes extensions like Move To Other AppVM... are unavailable.

Steps to reproduce the behavior

• Create AppVM based on fedora-25-minimal
• dnf install -y firefox
• Firefox->Tools->Downloads->Open Containing Folder next to a downloaded file
• Nautilus will open
• dnf install -y nemo
• Reopen Firefox
• Tools->Downloads->Open Containing Folder will now open Nemo

General notes

The issue seems to be https://bugzilla.redhat.com/show_bug.cgi?id=1384788, where it's indicated that this is a bug/change in behaviour in Nemo. So I'm not sure if anything can/should be done in Qubes to address this, but I also don't know why Nemo is installed by default in the minimal template? I hadn't realized it was until encountering this change, and unfortunately it doesn't seem like it can be easily removed.