We need a custom edX PPA for all versions of Debian

(cherry picked from commit b8ed4f49)

playbooks/roles/common/tasks/main.yml

@@ -52,25 +52,22 @@
   when: ansible_distribution in common_debian_variants
 
 
-# Ensure that we get the latest version of python 2.7
-- name: add edx ppa apt key
+# Ensure that we can install old software if need be.
+- name: Add edX PPA apt key
   apt_key:
     id: "{{ COMMON_EDX_PPA_KEY_ID }}"
     keyserver: "{{ COMMON_EDX_PPA_KEY_SERVER }}"
     state: "present"
   when: >
-    ansible_distribution in common_debian_variants and
-    ansible_distribution_release in common_custom_ppa_releases
+    ansible_distribution in common_debian_variants
 
 - name: Add custom edX PPA
-# Ensure that we get a current version of Git and latest version of python 2.7
-# GitHub requires version 1.7.10 or later
-# https://help.github.com/articles/https-cloning-errors
+  # Ensure that we get the latest version of python 2.7
+  # MySQL 5.6 is from our own PPA: https://bugs.mysql.com/bug.php?id=84848
   apt_repository:
     repo: "{{ COMMON_EDX_PPA }}"
   when: >
-    ansible_distribution in common_debian_variants and
-    ansible_distribution_release in common_custom_ppa_releases
+    ansible_distribution in common_debian_variants
 
 
 - name: Install role-independent useful system packages
@@ -89,10 +86,10 @@
     install_recommends: yes
     state: present
     update_cache: yes
-  with_items: "{{ common_custom_debian_pkgs }}"
+  with_items: "{{ old_python_debian_pkgs }}"
   when: >
     ansible_distribution in common_debian_variants and
-    ansible_distribution_release in common_custom_ppa_releases
+    ansible_distribution_release in old_python_ppa_releases
 
 - name: Install role-independent useful system packages
   yum:

playbooks/roles/common_vars/defaults/main.yml

@@ -119,7 +119,7 @@ common_debian_pkgs:
   - python2.7-dev
 
 # Packages that should be installed from our custom PPA, i.e. COMMON_EDX_PPA
-common_custom_debian_pkgs:
+old_python_debian_pkgs:
   - "python2.7=2.7.10-0+{{ ansible_distribution_release }}1"
 
 common_pip_pkgs:
@@ -153,8 +153,8 @@ common_debian_variants:
   - Ubuntu
   - Debian
 
-# Only attempt to use our custom PPA for these releases
-common_custom_ppa_releases:
+# We only have to install old Python for these releases:
+old_python_ppa_releases:
   - precise
   - trusty
 

util/install/ansible-bootstrap.sh

@@ -107,13 +107,9 @@ apt-get install -y software-properties-common python-software-properties
 # Add git PPA
 add-apt-repository -y ppa:git-core/ppa
 
-# For older distributions we need to install a PPA for Python 2.7.10
-if [[ "precise" = "${SHORT_DIST}" || "trusty" = "${SHORT_DIST}" ]]; then
-
-    # Add python PPA
-    apt-key adv --keyserver "${EDX_PPA_KEY_SERVER}" --recv-keys "${EDX_PPA_KEY_ID}"
-    add-apt-repository -y "${EDX_PPA}"
-fi
+# For older software we need to install our own PPA.
+apt-key adv --keyserver "${EDX_PPA_KEY_SERVER}" --recv-keys "${EDX_PPA_KEY_ID}"
+add-apt-repository -y "${EDX_PPA}"
 
 # Install python 2.7 latest, git and other common requirements
 # NOTE: This will install the latest version of python 2.7 and