For better or worse, more and more rust components are appearing that do
not include their dependencies in tarballs (or git trees), and rely on cargo
to fetch them. On the other hand, bitbake does not use cargo (and quite possible
won't ever be able to), and relies on having each item explicitly listed in 
SRC_URI
with a crate:// prefix. This however creates a problem of both making such 
lists in
the first place and updating them when a recipe is updated to a newer version.

So this class can be used to perform such updates by implementing a task that 
does it;
the next commit shows the outcome for python3-bcrypt (which has been tested to 
work
and produce a successful build).

Note: the python script relies on tomllib library, which appears in Python 3.11 
and
does not exist in earlier versions - I've tested this by first updating python 
to 3.11-rc2
in oe-core.

Signed-off-by: Alexander Kanavin <a...@linutronix.de>
---
 .../cargo-update-recipe-crates.bbclass        | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 meta/classes-recipe/cargo-update-recipe-crates.bbclass

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..f90938c734
--- /dev/null
+++ b/meta/classes-recipe/cargo-update-recipe-crates.bbclass
@@ -0,0 +1,41 @@
+#
+# 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() {
+    nativepython3 - <<EOF
+
+def get_crates(f):
+    import tomllib
+    c_list = 'SRC_URI += " \\ \n'
+    crates = tomllib.load(open(f, 'rb'))
+    for c in crates['package']:
+        if 'source' in c and 'crates.io' in c['source']:
+            c_list += "        crate://crates.io/{}/{} \\ 
\n".format(c['name'], c['version'])
+    c_list += '"\n'
+    return c_list
+
+import os
+crates = "# Autogenerated with 'bitbake -c update_crates ${PN}'\n\n"
+for root, dirs, files in os.walk('${S}'):
+    for file in files:
+        if file == 'Cargo.lock':
+            crates += get_crates(os.path.join(root, file))
+open(os.path.join('${THISDIR}', '${PN}'+"-crates.inc"), 'w').write(crates)
+
+EOF
+}
-- 
2.30.2

-=-=-=-=-=-=-=-=-=-=-=-
Links: You receive all messages sent to this group.
View/Reply Online (#172303): 
https://lists.openembedded.org/g/openembedded-core/message/172303
Mute This Topic: https://lists.openembedded.org/mt/94683148/21656
Group Owner: openembedded-core+ow...@lists.openembedded.org
Unsubscribe: https://lists.openembedded.org/g/openembedded-core/unsub 
[arch...@mail-archive.com]
-=-=-=-=-=-=-=-=-=-=-=-

Reply via email to