[bug#61217] [PATCH] build: Correct guix_system on musl libc distros.

[Antero Mejr]

* m4/guix.m4 (GUIX_SYSTEM_TYPE): Add linux-musl* case. This prevents
the macro from mis-parsing the host OS, which causes breakage when
building from source.
---
 m4/guix.m4 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/m4/guix.m4 b/m4/guix.m4
index 700c0dfd4a..147fcc48f4 100644
--- a/m4/guix.m4
+++ b/m4/guix.m4
@@ -58,6 +58,8 @@ AC_DEFUN([GUIX_SYSTEM_TYPE], [
        linux-gnu*)
          # For backward compatibility, strip the `-gnu' part.
          guix_system="$machine_name-linux";;
+       linux-musl*)
+         guix_system="$machine_name-linux";;
        gnu*)
           # Always use i586 for GNU/Hurd.
           guix_system="i586-gnu";;
-- 
2.38.1