configure: bump Meson to 1.9.0 for use with Rust

Meson 1.9.0 provides mixed linking of Rust and C objects.  As a side effect,
this also allows adding dependencies with "sources: ..." files to Rust crates
that use structured_sources().

It can also clean up up the meson.build files for Rust noticeably, but due
to an issue with doctests (see https://github.com/mesonbuild/meson/pull/14973)
that will have to wait for 1.9.1.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250908105005.2119297-3-pbonzini@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -1184,12 +1184,12 @@ fi
 # detect rust triple
 
 meson_version=$($meson --version)
-if test "$rust" != disabled && ! version_ge "$meson_version" 1.8.1; then
+if test "$rust" != disabled && ! version_ge "$meson_version" 1.9.0; then
   if test "$rust" = enabled; then
     $mkvenv ensuregroup --dir "${source_path}/python/wheels" \
          ${source_path}/pythondeps.toml meson-rust || exit 1
   else
-    echo "Rust needs Meson 1.8.1, disabling" 2>&1
+    echo "Rust needs Meson 1.9.0, disabling" 2>&1
     rust=disabled
   fi
 fi

python/scripts/vendor.py

@@ -41,8 +41,8 @@ def main() -> int:
     parser.parse_args()
 
     packages = {
-        "meson==1.8.1":
-        "374bbf71247e629475fc10b0bd2ef66fc418c2d8f4890572f74de0f97d0d42da",
+        "meson==1.9.0":
+        "45e51ddc41e37d961582d06e78c48e0f9039011587f3495c4d6b0781dad92357",
     }
 
     vendor_dir = Path(__file__, "..", "..", "wheels").resolve()

pythondeps.toml

@@ -19,12 +19,12 @@
 
 [meson]
 # The install key should match the version in python/wheels/
-meson = { accepted = ">=1.5.0", installed = "1.8.1", canary = "meson" }
+meson = { accepted = ">=1.5.0", installed = "1.9.0", canary = "meson" }
 pycotap = { accepted = ">=1.1.0", installed = "1.3.1" }
 
 [meson-rust]
 # The install key should match the version in python/wheels/
-meson = { accepted = ">=1.8.1", installed = "1.8.1", canary = "meson" }
+meson = { accepted = ">=1.9.0", installed = "1.9.0", canary = "meson" }
 
 [docs]
 # Please keep the installed versions in sync with docs/requirements.txt