diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index dfee6a00..3e6493b4 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -11,6 +11,8 @@ rust-version = "1.64.0"
 include = ["/src", "LICENSE-APACHE", "LICENSE-MIT"]
 
 [dependencies]
+anstream = "0.6.4"
+anstyle = "1.0.4"
 anyhow = "1.0"
 camino = { version = "1.0.4", features = ["serde1"] }
 ostree-ext = "0.12"
diff --git a/lib/src/install.rs b/lib/src/install.rs
index 3cc5c21b..4bdc5d00 100644
--- a/lib/src/install.rs
+++ b/lib/src/install.rs
@@ -790,6 +790,10 @@ async fn prepare_install(
     crate::cli::require_root()?;
     require_systemd_pid1()?;
 
+    if cfg!(target_arch = "s390x") {
+        anyhow::bail!("Installation is not supported on this architecture yet");
+    }
+
     let rootfs = cap_std::fs::Dir::open_ambient_dir("/", cap_std::ambient_authority())
         .context("Opening /")?;
 
diff --git a/lib/src/status.rs b/lib/src/status.rs
index 29079bf7..0296daab 100644
--- a/lib/src/status.rs
+++ b/lib/src/status.rs
@@ -262,7 +262,7 @@ pub(crate) async fn status(opts: super::cli::StatusOpts) -> Result<()> {
         host
     };
 
-    eprintln!("note: The format of this API is not yet stable");
+    crate::utils::warning("note: The format of this API is not yet stable");
 
     // If we're in JSON mode, then convert the ostree data into Rust-native
     // structures that can be serialized.
diff --git a/lib/src/utils.rs b/lib/src/utils.rs
index 51a73c41..3c73e8f6 100644
--- a/lib/src/utils.rs
+++ b/lib/src/utils.rs
@@ -60,6 +60,15 @@ pub(crate) fn spawn_editor(tmpf: &tempfile::NamedTempFile) -> Result<()> {
     Ok(())
 }
 
+/// Output a warning message
+pub(crate) fn warning(s: &str) {
+    anstream::eprintln!(
+        "{}{s}{}",
+        anstyle::AnsiColor::Red.render_fg(),
+        anstyle::Reset.render()
+    );
+}
+
 /// Given a possibly tagged image like quay.io/foo/bar:latest and a digest 0ab32..., return
 /// the digested form quay.io/foo/bar:latest@sha256:0ab32...
 /// If the image already has a digest, it will be replaced.