[DRE-maint] Bug#983346: Update gitlab to 13.7.7 (installation fails - need help)

[Pirate Praveen]

On Mon, 22 Feb 2021 22:59:51 +0530 Pirate Praveen 
<praveen at onenetbeyond.org> wrote:
 > Package: gitlab
 > Severity: important
 > Control: tags -1 help
 >
 > I'm trying to update gitlab to 13.7.7 (master-13.7 branch in salsa),
 >
 > but installation fails with

Installing 13.7.7 on a clean system (after purge) works, but fails when 
upgrading from 13.6.7.