install rustup

Author: tgross35

.github/workflows/main.yaml

@@ -157,7 +157,7 @@ jobs:
       with:
         msystem: UCRT64
         update: true
-        install: diffutils m4 make
+        install: diffutils m4 make rustup
 
     - name: Run on Windows
       if: matrix.os == 'windows-2025'

ci/setup-windows.sh

@@ -2,5 +2,11 @@
 
 set -eux
 
+target="$1"
+
 m4 --help
 make --help
+
+rustup update nightly-x86_64-gnu
+rustup default nightly-x86_64-gnu
+rustup target add "$target"