uapi,meson: add install crates

deploy crates to local registry if specified.

meson.options

@@ -13,3 +13,5 @@ option('dts', type: 'string', description: 'Top level DTS file', yield: true)
 option('dts-include-dirs', type: 'array', value: ['dts'], yield: true,
        description: 'Directories to add to resolution path for dtsi inclusion')
 option('rust-channel', type: 'string', value: '1.82.0', description: 'rustup channel to use for Rust toolchain')
+option('cargo-registry', type: 'string', description: 'cargo local registry')
+option('with-install-crates', type: 'boolean', value: false, description: 'install crate(s) to specified registry')

uapi/meson.build

@@ -26,13 +26,15 @@ rust_edition = '2021'
 uapi_rust_std = 'rust_std=' + rust_edition
 uapi_manifest = files('Cargo.toml')
 
+cargo_install = get_option('with-install-crates')
+
 subdir('include/uapi')
 subdir('src')
 
 cargo = find_program('cargo', required: true)
 cargo_fmt = find_program('cargo-fmt', required: false)
 cargo_clippy = find_program('cargo-clippy', required: false)
-cargo_index = find_program('cargo-index', required: false)
+cargo_index = find_program('cargo-index', required: cargo_install)
 
 if with_doc_opt
 uapi_doc = custom_target(
@@ -126,6 +128,52 @@ rustargs_file = configure_file(
     install_tag: 'data',
 )
 
+summary(
+    {
+        'install crates': cargo_install,
+    },
+    section: 'Cargo',
+    bool_yn: true,
+)
+
+if cargo_install
+fs = import('fs')
+cargo_local_registry = fs.expanduser(get_option('cargo-registry'))
+
+if not fs.is_absolute(cargo_local_registry)
+    error('cargo local registry must be an absolute path')
+endif
+
+if not fs.is_dir(cargo_local_registry)
+    error('cargo local registry must exist and be a directory')
+endif
+
+cargo_local_registry_index = join_paths(cargo_local_registry, 'index')
+
+meson.add_install_script(
+    cargo,
+    'index',
+    'add',
+    '--force',
+    '--manifest-path=' + uapi_manifest[0].full_path(),
+    '--index=' + cargo_local_registry_index,
+    '--index-url=file://' + cargo_local_registry_index,
+    '--upload=' + cargo_local_registry,
+    '--',
+    '--no-verify',
+    install_tag: 'devel',
+)
+
+summary(
+    {
+        'cargo local registry': cargo_local_registry,
+    },
+    section: 'Cargo',
+    bool_yn: true,
+)
+
+endif # with install crates
+
 install_data(
   'task.Kconfig',
   install_dir : get_option('datadir') / 'configs',