1 files changed, 46 insertions, 0 deletions
diff --git a/meta/classes-recipe/cargo-update-recipe-crates.bbclass b/meta/classes-recipe/cargo-update-recipe-crates.bbclass
new file mode 100644
index 0000000000..697460d215
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+++ b/meta/classes-recipe/cargo-update-recipe-crates.bbclass
@@ -0,0 +1,46 @@
+#
+# Copyright OpenEmbedded Contributors
+#
+# SPDX-License-Identifier: MIT
+#
+
+##
+## Purpose:
+## This class is used to update the list of crates in SRC_URI
+## by reading Cargo.lock in the source tree.
+##
+## See meta/recipes-devtools/python/python3-bcrypt_*.bb for an example
+##
+## To perform the update: bitbake -c update_crates recipe-name
+
+addtask do_update_crates after do_patch
+do_update_crates[depends] = "python3-native:do_populate_sysroot"
+do_update_crates[nostamp] = "1"
+
+# The directory where to search for Cargo.lock files
+CARGO_LOCK_SRC_DIR ??= "${S}"
+
+do_update_crates() {
+    nativepython3 - <<EOF
+
+def get_crates(f):
+    import tomllib
+    c_list = '# from %s' % os.path.relpath(f, '${CARGO_LOCK_SRC_DIR}')
+    c_list += '\nSRC_URI += " \\\'
+    crates = tomllib.load(open(f, 'rb'))
+    for c in crates['package']:
+        if 'source' in c and 'crates.io' in c['source']:
+            c_list += '\n    crate://crates.io/%s/%s \\\' % (c['name'], c['version'])
+    c_list += '\n"\n'
+    return c_list
+
+import os
+crates = "# Autogenerated with 'bitbake -c update_crates ${PN}'\n\n"
+for root, dirs, files in os.walk('${CARGO_LOCK_SRC_DIR}'):
+    for file in files:
+        if file == 'Cargo.lock':
+            crates += get_crates(os.path.join(root, file))
+open(os.path.join('${THISDIR}', '${BPN}'+"-crates.inc"), 'w').write(crates)
+
+EOF
+}