ostree-ext: Update ostree bindings and *conditionally* use v2025_3

Add machinery to do dynamic build time detection of ostree, and
only enable use of the feature if we have a new enough version.

Signed-off-by: Colin Walters <[email protected]>

Author: jmarrero

Cargo.lock

@@ -587,6 +587,10 @@ async fn deploy(
                 &opts,
                 Some(cancellable),
             )?;
+            tracing::debug!(
+                "Soft reboot capable: {:?}",
+                ostree_ext::deployment_can_soft_reboot(&sysroot, &d)
+            );
             Ok(d.index())
         }),
     )

lib/src/deploy.rs

@@ -11,7 +11,8 @@ version = "0.15.3"
 [dependencies]
 containers-image-proxy = "0.8.0"
 # We re-export this library too.
-ostree = { features = ["v2025_2"], version = "0.20" }
+# Default to v2025_2, upgrade to v2025_3 when feature is enabled
+ostree = { version = "0.20", features = ["v2025_2"] }
 
 # Private dependencies
 anyhow = { workspace = true }
@@ -59,6 +60,9 @@ quickcheck = "1"
 # https://github.com/rust-lang/rfcs/pull/1956
 ostree-ext = { path = ".", features = ["internal-testing-api"] }
 
+[build-dependencies]
+pkg-config = "0.3"
+
 [package.metadata.docs.rs]
 features = ["dox"]
 

ostree-ext/Cargo.toml

@@ -77,3 +77,19 @@ pub mod prelude {
 pub mod fixture;
 #[cfg(feature = "internal-testing-api")]
 pub mod integrationtest;
+
+/// Dynamic detection wrapper for soft reboots, if the installed ostree is too old
+/// then we return `None`.
+pub fn deployment_can_soft_reboot(
+    sysroot: &ostree::Sysroot,
+    deployment: &ostree::Deployment,
+) -> Option<bool> {
+    #[cfg(have_ostree_2025_3)]
+    {
+        Some(ostree::Sysroot::deployment_can_soft_reboot(
+            sysroot, deployment,
+        ))
+    }
+    #[cfg(not(have_ostree_2025_3))]
+    None
+}