gnupg relies on readline
After merging !2109 (merged), we have a red master.
Older OS seem to be building with system readline https://dev.gitlab.org/gitlab/omnibus-gitlab/pipelines/69616, newer ones do not have it so gnupg build passes.
I've pushed build-gnupg-without-readline
branch but the now other libraries are failing https://dev.gitlab.org/gitlab/omnibus-gitlab/pipelines/69619
Most likely we need to disable readline in the other dependent libraries.
Edited by Marin Jankovski