meson: update to version 1.8.1

This adds several improvements to Rust support, including
native clippy and rustdoc targets, the "objects" keyword,
and running doctests.

Require it only when Rust support is requested, to avoid
putting a strict requirement on all build platforms for the
sake of an experimental feature.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

configure

@@ -1178,6 +1178,14 @@ fi
 ##########################################
 # detect rust triple
 
+meson_version=$($meson --version)
+if test "$rust" != disabled && ! version_ge "$meson_version" 1.8.1; then
+  if test "$rust" = enabled; then
+    error_exit "Rust support needs Meson 1.8.1 or newer"
+  fi
+  echo "Rust needs Meson 1.8.1, disabling" 2>&1
+  rust=disabled
+fi
 if test "$rust" != disabled && has "$rustc" && $rustc -vV > "${TMPDIR1}/${TMPB}.out"; then
   rust_host_triple=$(sed -n 's/^host: //p' "${TMPDIR1}/${TMPB}.out")
 else

python/scripts/vendor.py

@@ -41,8 +41,8 @@ def main() -> int:
     parser.parse_args()
 
     packages = {
-        "meson==1.5.0":
-        "52b34f4903b882df52ad0d533146d4b992c018ea77399f825579737672ae7b20",
+        "meson==1.8.1":
+        "374bbf71247e629475fc10b0bd2ef66fc418c2d8f4890572f74de0f97d0d42da",
     }
 
     vendor_dir = Path(__file__, "..", "..", "wheels").resolve()

pythondeps.toml

@@ -19,7 +19,7 @@
 
 [meson]
 # The install key should match the version in python/wheels/
-meson = { accepted = ">=1.5.0", installed = "1.5.0", canary = "meson" }
+meson = { accepted = ">=1.5.0", installed = "1.8.1", canary = "meson" }
 pycotap = { accepted = ">=1.1.0", installed = "1.3.1" }
 
 [docs]

tests/lcitool/mappings.yml

@@ -8,6 +8,10 @@ mappings:
 
   meson:
     OpenSUSELeap15:
+    # Use Meson from PyPI wherever Rust is enabled
+    Debian:
+    Fedora:
+    Ubuntu:
 
   python3:
     OpenSUSELeap15: python311-base
@@ -72,7 +76,7 @@ mappings:
 pypi_mappings:
   # Request more recent version
   meson:
-    default: meson==1.5.0
+    default: meson==1.8.1
 
   # Drop packages that need devel headers
   python3-numpy: