From 86c937436d68dc3693642b5d28848076cd2eed45 Mon Sep 17 00:00:00 2001
From: Jordan Harband <ljharb@gmail.com>
Date: Tue, 14 Jul 2026 23:10:33 -0700
Subject: [PATCH] [Robustness] `nvm_get_arch`: only apply the Alpine musl
 suffix when the OS is linux

The `/etc/alpine-release` check applied the -musl suffix regardless of the resolved OS.
In practice Alpine is always linux, so this is behavior-neutral, but it also makes the `nvm_get_arch` unit test hermetic: its mocked smartos/osx cases no longer pick up a real host's Alpine marker.
---
 nvm.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nvm.sh b/nvm.sh
index acf99378..3559058b 100755
--- a/nvm.sh
+++ b/nvm.sh
@@ -2251,7 +2251,7 @@ nvm_get_arch() {
     HOST_ARCH=armv7l
   fi
 
-  if [ -f "/etc/alpine-release" ]; then
+  if [ -f "/etc/alpine-release" ] && [ "_${NVM_OS}" = "_linux" ]; then
     # Alpine Linux uses musl libc; map to musl variants where available
     # See https://unofficial-builds.nodejs.org/download/release/
     case "${NVM_ARCH}" in