From d9668973950853ce3dc026246cad24fcbb5dbcfa Mon Sep 17 00:00:00 2001
From: Stefan Becker <stefanb2@users.noreply.github.com>
Date: Mon, 23 Oct 2023 14:11:43 +0300
Subject: [PATCH] README.md: add PI_GEN_RELEASE (#720)

This is the text written to "/etc/issue.txt" by update_issue(). The
default is the name used by official Raspberry Pi builds.

Fixes #719
---
 README.md      | 5 +++++
 build.sh       | 1 +
 scripts/common | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 6369ac5..2fdb65e 100644
--- a/README.md
+++ b/README.md
@@ -55,6 +55,11 @@ The following environment variables are supported:
    but you should use something else for a customized version.  Export files
    in stages may add suffixes to `IMG_NAME`.
 
+ * `PI_GEN_RELEASE` (Default: `Raspberry Pi reference`)
+
+   The release name to use in `/etc/issue.txt`. The default should only be used
+   for official Raspberry Pi builds.
+
 * `USE_QCOW2` **EXPERIMENTAL** (Default: `0` )
 
     Instead of using traditional way of building the rootfs of every stage in
diff --git a/build.sh b/build.sh
index 22b605d..7d7bc40 100755
--- a/build.sh
+++ b/build.sh
@@ -194,6 +194,7 @@ trap term EXIT INT TERM
 
 export PI_GEN=${PI_GEN:-pi-gen}
 export PI_GEN_REPO=${PI_GEN_REPO:-https://github.com/RPi-Distro/pi-gen}
+export PI_GEN_RELEASE=${PI_GEN_RELEASE:-Raspberry Pi reference}
 
 if [ -z "${IMG_NAME}" ]; then
 	echo "IMG_NAME not set" 1>&2
diff --git a/scripts/common b/scripts/common
index c94b0f0..74c7938 100644
--- a/scripts/common
+++ b/scripts/common
@@ -99,7 +99,7 @@ on_chroot() {
 export -f on_chroot
 
 update_issue() {
-	echo -e "Raspberry Pi reference ${IMG_DATE}\nGenerated using ${PI_GEN}, ${PI_GEN_REPO}, ${GIT_HASH}, ${1}" > "${ROOTFS_DIR}/etc/rpi-issue"
+	echo -e "${PI_GEN_RELEASE} ${IMG_DATE}\nGenerated using ${PI_GEN}, ${PI_GEN_REPO}, ${GIT_HASH}, ${1}" > "${ROOTFS_DIR}/etc/rpi-issue"
 }
 export -f update_issue