Commands fail to start in CentOS template due to locale problems

[misterzed88]

Qubes OS version:

R4.0

Affected component(s):

qubes-builder-rpm

---

Steps to reproduce the behavior:

1. Use qubes-builder to build and install an centos-7 template.
2. Attempt to start a terminal window with:
   qvm-run centos-7 gnome-terminal
3. A terminal window does not appear. The centos-7 logs show that this is due locale problems.

General notes:

The CentOS template is created with 'LANG=C.UTF-8' in /etc/locale.conf. This locale is not available in CentOS.

A workaround is to change the default language to 'LANG=en_US.UTF-8', which can be done by replacing the following code in builder-rpm/template_scripts/04_install_qubes.sh:

echo "LANG=C.UTF-8" >> ${INSTALLDIR}/etc/locale.conf

with

if [ "$DISTRIBUTION" = "centos" ]; then
    echo "LANG=en_US.UTF-8" >> ${INSTALLDIR}/etc/locale.conf
else
    echo "LANG=C.UTF-8" >> ${INSTALLDIR}/etc/locale.conf
fi