Fix get_isa logic

Author: HallowedDust5

ChangeLog.md

@@ -52,6 +52,7 @@ Bug fixes:
   [#5608](https://github.com/commercialhaskell/stack/pull/5608)
 * On Unix-like operating systems, respect the `with-gcc` option when installing
   GHC. See [#5609](https://github.com/commercialhaskell/stack/pull/5609)
+* Fixed logic in `get_isa()` in `get-stack.sh` to not include systems that don't have x86 in their `uname -m` output. See [5792](https://github.com/commercialhaskell/stack/issues/5792).
 
 ## v2.7.5
 

etc/scripts/get-stack.sh

@@ -75,8 +75,10 @@ get_isa() {
     echo arm
   elif uname -m | grep -q aarch64 ; then
     echo aarch64
-  else
+  elif uname -m | grep -q x86 ; then
     echo x86
+  else
+    die "$(uname -m) is not a supported instruction set"
   fi
 }