Specify how to handle python packages only available in recent distri…

…butions. (ros#32737) * update CONTRIBUTING.md Co-authored-by: Tully Foote <[email protected]> Co-authored-by: Steven! Ragnarök <[email protected]>
movefasta · Apr 18, 2022 · f09a74d · f09a74d
1 parent 0f0ddcc
commit f09a74d
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -273,6 +273,22 @@ The `-pip` key should be removed when the package becomes available on all platf
 As a reminder `pip` rules should not be used on Gentoo.
 See above for the Gentoo specific guidelines.
 
+#### pip mixed with system packages
+
+Some packages are only available as system packages in newer distributions.
+In such case, you can specify the default as system package, and pip for older distributions for which the system packages are not available.
+
+For example:
+
+```yaml
+python3-relatively-new-package
+ ubuntu:
+ '*': [python3-relatively-new-package]
+ bionic:
+ pip:
+ packages: [relatively-new-package]
+```
+
 How to submit pull requests
 ---------------------------