Incomplete fix for pulp_installer issue with EL7 LANG=C.UTF-8

gistfile1.txt

diff --git a/requirements.yml b/requirements.yml
index 70b756a..ad6b4c7 100644
--- a/requirements.yml
+++ b/requirements.yml
@@ -1,5 +1,3 @@
 ---
-roles:
-  - { name: geerlingguy.postgresql, version: 2.2.1 }
 collections:
   - ansible.posix
diff --git a/roles/pulp_database/tasks/install_postgres.yml b/roles/pulp_database/tasks/install_postgres.yml
index d29a327..a8fc24d 100644
--- a/roles/pulp_database/tasks/install_postgres.yml
+++ b/roles/pulp_database/tasks/install_postgres.yml
@@ -27,4 +27,7 @@
     - name: Install and configure PostgreSQL
       include_role:
         name: geerlingguy.postgresql
+        apply:
+          environment: "{{ __postgresql_role_env | default(omit) }}"
+
   become: yes
diff --git a/roles/pulp_database/vars/RedHat-7.yml b/roles/pulp_database/vars/RedHat-7.yml
index b35e8ac..f0e506d 100644
--- a/roles/pulp_database/vars/RedHat-7.yml
+++ b/roles/pulp_database/vars/RedHat-7.yml
@@ -6,3 +6,12 @@ postgresql_bin_path: /opt/rh/rh-postgresql96/root/bin
 postgresql_data_dir: /var/opt/rh/rh-postgresql96/lib/pgsql/data
 postgresql_config_path: /var/opt/rh/rh-postgresql96/lib/pgsql/data
 postgresql_profile_path: /etc/profile.d/enablepostgresql96.sh
+# Postgres 9.6 cannot handle C.UTF-8, a new common Linux standard.
+# Some users need this anyway, but it is triggered when C.UTF-8
+# bleeds from Ubuntu 20.04 (GHA) to the managed system via Vagrant.
+#
+# Ansible would fail on task/error:
+# geerlingguy.postgresql : Ensure PostgreSQL database is initialized.
+# "FATAL:  invalid input syntax for integer: \"NAMEDATALEN\"
+__postgresql_role_env:
+  LANG: en_US.UTF-8