become_user unset?

[giovannipizzi]

Shouldn't there be a become_user: "{{ root_user }}" inside the first task of the role (and a definition of this in the defaults/main.yml? This is there in the role for Wannier90 but not here, and if I try to run this role from (an earlier version of) the Quantum Mobile (modified from 19.03) this role fails because it does not become root but it remains max.

Before changing, though, I'd like to understand better how it works (also because I'm using an older QMobile version - btw, shouldn't we pin the versions of the roles rather than use 'master'? If I now want to rebuild an old version of Quantum Mobile, I would anyway get the most recent roles, which is not what we want, right?)

[ltalirz]

We're currently in a transition phase, where I'm moving away entirely from the become_user for "simulation code roles" (step 1 here: marvel-nccr/quantum-mobile#96)

The develop branch already uses fixed versions: https://github.com/marvel-nccr/quantum-mobile/blob/develop/requirements.yml

[ltalirz]

Just to mention also that I'm bumping the major version number for this transition, i.e. v0.1.2 of the quantumespresso role still has the become_user

[giovannipizzi]

ok thanks, so I'll close this for now