This is a standard replacement for Box<dyn Error> which is more efficient (it 
only
occcupies one word) and provides a backtrace of the error.  This could be 
plumbed
into &error_abort in the future.

Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
 rust/meson.build                              |  2 ++
 subprojects/.gitignore                        |  1 +
 subprojects/anyhow-1.0-rs.wrap                |  7 ++++
 .../packagefiles/anyhow-1.0-rs/meson.build    | 33 +++++++++++++++++++
 4 files changed, 43 insertions(+)
 create mode 100644 subprojects/anyhow-1.0-rs.wrap
 create mode 100644 subprojects/packagefiles/anyhow-1.0-rs/meson.build

diff --git a/rust/meson.build b/rust/meson.build
index 1f0dcce7d04..3e0b6ed4afa 100644
--- a/rust/meson.build
+++ b/rust/meson.build
@@ -1,7 +1,9 @@
+subproject('anyhow-1.0-rs', required: true)
 subproject('bilge-0.2-rs', required: true)
 subproject('bilge-impl-0.2-rs', required: true)
 subproject('libc-0.2-rs', required: true)
 
+anyhow_rs = dependency('anyhow-1.0-rs')
 bilge_rs = dependency('bilge-0.2-rs')
 bilge_impl_rs = dependency('bilge-impl-0.2-rs')
 libc_rs = dependency('libc-0.2-rs')
diff --git a/subprojects/.gitignore b/subprojects/.gitignore
index d12d34618cc..b9ae507b85a 100644
--- a/subprojects/.gitignore
+++ b/subprojects/.gitignore
@@ -6,6 +6,7 @@
 /keycodemapdb
 /libvfio-user
 /slirp
+/anyhow-1.0.98
 /arbitrary-int-1.2.7
 /bilge-0.2.0
 /bilge-impl-0.2.0
diff --git a/subprojects/anyhow-1.0-rs.wrap b/subprojects/anyhow-1.0-rs.wrap
new file mode 100644
index 00000000000..53f20b2a315
--- /dev/null
+++ b/subprojects/anyhow-1.0-rs.wrap
@@ -0,0 +1,7 @@
+[wrap-file]
+directory = anyhow-1.0.98
+source_url = https://crates.io/api/v1/crates/anyhow/1.0.98/download
+source_filename = anyhow-1.0.98.tar.gz
+source_hash = e16d2d3311acee920a9eb8d33b8cbc1787ce4a264e85f964c2404b969bdcd487
+#method = cargo
+patch_directory = anyhow-1.0-rs
diff --git a/subprojects/packagefiles/anyhow-1.0-rs/meson.build 
b/subprojects/packagefiles/anyhow-1.0-rs/meson.build
new file mode 100644
index 00000000000..67278c25af9
--- /dev/null
+++ b/subprojects/packagefiles/anyhow-1.0-rs/meson.build
@@ -0,0 +1,33 @@
+project('anyhow-1.0-rs', 'rust',
+  meson_version: '>=1.5.0',
+  version: '1.0.98',
+  license: 'MIT OR Apache-2.0',
+  default_options: [])
+
+rustc = meson.get_compiler('rust')
+
+rust_args = ['--cap-lints', 'allow']
+rust_args += ['--cfg', 'feature="std"']
+if rustc.version().version_compare('<1.65.0')
+  error('rustc version ' + rustc.version() + ' is unsupported. Please upgrade 
to at least 1.65.0')
+endif
+rust_args += [ '--cfg', 'std_backtrace' ] # >= 1.65.0
+if rustc.version().version_compare('<1.81.0')
+  rust_args += [ '--cfg', 'anyhow_no_core_error' ]
+endif
+
+_anyhow_rs = static_library(
+  'anyhow',
+  files('src/lib.rs'),
+  gnu_symbol_visibility: 'hidden',
+  override_options: ['rust_std=2018', 'build.rust_std=2018'],
+  rust_abi: 'rust',
+  rust_args: rust_args,
+  dependencies: [],
+)
+
+anyhow_dep = declare_dependency(
+  link_with: _anyhow_rs,
+)
+
+meson.override_dependency('anyhow-1.0-rs', anyhow_dep)
-- 
2.49.0


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