CentOS template build fails for module app-linux-input-proxy

[misterzed88]

Qubes OS version:

R4.0

Affected component(s):

qubes-builder-rpm

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Steps to reproduce the behavior:

Following the instructions in https://www.qubes-os.org/doc/building-archlinux-template:

1. Using the Fedora 26 template when setting up the builder VM.
2. Creating a builder.conf using the 'setup' script, with the following options:

• 'Build templates only' enabled
• 'mgmt-salt' disabled
• 'builder-rpm' enabled
• 'centos-7' being the only selected template

3. Downloading sources with make get-sources
4. Running build with make qubes-vm
5. Creating template with make template
6. The template creation fails with the following error message:
   error: File /home/user/qubes-src/app-linux-input-proxy/qubes-input-proxy-1.0.11.tar.gz: No such file or directory

General notes:

The problem is due to scripts/query-spec failing to determine the version from the spec file, resulting in the wrong name used when calling create-archive:
/home/user/Build/qubes-builder/scripts/create-archive /home/user/Build/qubes-builder/chroot-centos7/home/user/qubes-src/app-linux-input-proxy qubes-input-proxy-.tar.gz qubes-input-proxy-/

A workaround is to manually specify the archive name by adding 'GIT_TARBALL_NAME = qubes-input-proxy-1.0.11.tar.gz' in the beginning of app-linux-input-proxy/Makefile.builder.

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