Add rustup + CHEZ_CONFIGURE_EXTRA to build-jerboa (fix missing rust install)

ober

716d2f8d8c7c9955782ea84b46a4011d71c35a1d

diff --git a/.build.yml b/.build.yml
index 51312d1..37826e7 100644
--- a/.build.yml
+++ b/.build.yml
@@ -20,7 +20,10 @@ tasks:
   - build-jerboa-tools: |
       cd jerboa
       # Build the multicall Jerboa tool artifact used by jerboa-shell.
-      make jerboa
+      curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | \
+        sh -s -- -y --profile minimal --default-toolchain 1.94.1
+      source "$HOME/.cargo/env"
+      make jerboa CHEZ_CONFIGURE_EXTRA=--disable-x11
   - build-shell: |
       cd jerboa-shell
       JERBUILD=$HOME/jerboa/dist/jerbuild make jsh-compile