From 91656abda7d8f57774a597ff151ac15db5721855 Mon Sep 17 00:00:00 2001
From: Andrei Neculau <andrei.neculau@gmail.com>
Date: Wed, 6 Jan 2021 11:20:59 +0100
Subject: [PATCH] fixup! actions/checkout@v2 needs git 2.18+

---
 .github/workflows/ci.yml | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7975655..537cd5c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -53,10 +53,16 @@ jobs:
           # upgrade git to 2.18+ for actions/checkout@v2
           set -euo pipefail
           set -x
-          echo "deb http://cloudfront.debian.net/debian stretch-backports main" >>/etc/apt/sources.list
-          echo "deb-src http://cloudfront.debian.net/debian stretch-backports main" >>/etc/apt/sources.list
-          apt-get update -y -o Acquire::Check-Valid-Until=false
-          apt-get -t stretch-backports install -y git
+          # some erlang containers are based on jesse, some or stretch, etc
+          # NOTE jesse has no VERSION_CODENAME in /etc/os-release
+          # NOTE lsb_release is not installed
+          # see https://unix.stackexchange.com/questions/180776/how-to-get-debian-codename-without-lsb-release
+          VERSION_CODENAME=$(dpkg --status tzdata|grep Provides|cut -f2 -d'-')
+          VCB=${VERSION_CODENAME}-backports
+          echo "deb http://cloudfront.debian.net/debian ${VCB} main" >>/etc/apt/sources.list.d/${VCB}.list
+          echo "deb-src http://cloudfront.debian.net/debian ${VCB} main" >>/etc/apt/sources.list.d/${VCB}.list
+          apt-get update -y --fix-missing -o Acquire::Check-Valid-Until=false
+          apt-get -t ${VCB} install -y git
       - uses: actions/checkout@v2
       - shell: bash
         run: |