From 68bbf31a869b8d745454f0bb613f0338a6c5cc90 Mon Sep 17 00:00:00 2001
From: Julian Ospald <hasufell@posteo.de>
Date: Fri, 10 Sep 2021 14:59:26 +0200
Subject: [PATCH] Fix download for armv7 container on arm64 host

---
 scripts/bootstrap/bootstrap-haskell | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/scripts/bootstrap/bootstrap-haskell b/scripts/bootstrap/bootstrap-haskell
index b5a1dd7..1d18be6 100755
--- a/scripts/bootstrap/bootstrap-haskell
+++ b/scripts/bootstrap/bootstrap-haskell
@@ -176,7 +176,15 @@ download_ghcup() {
 					_url=${base_url}/${ghver}/armv7-linux-ghcup-${ghver}
 					;;
 				aarch64|arm64|armv8l)
-					_url=${base_url}/${ghver}/aarch64-linux-ghcup-${ghver}
+					# we could be in a 32bit docker container, in which
+					# case uname doesn't give us what we want
+					if [ "$(getconf LONG_BIT)" = "32" ] ; then
+						_url=${base_url}/${ghver}/armv7-linux-ghcup-${ghver}
+					elif [ "$(getconf LONG_BIT)" = "64" ] ; then
+						_url=${base_url}/${ghver}/aarch64-linux-ghcup-${ghver}
+					else
+						die "Unknown long bit size: $(getconf LONG_BIT)"
+					fi
 					;;
 				*) die "Unknown architecture: ${arch}"
 					;;