Enabling the profile can lead to hard-to-debug issues, which should be
warned about in addition to the cost in features and performance.
See https://github.com/NixOS/nixpkgs/issues/108262 for an example.
* Content of `programlisting` shouldn't be indented, otherwise it's
weirdly indented in the output.
* Use `<xref linkend=.../>` in the release notes: then users can
directly go to the option documentation when reading release notes.
* Don't use docbook tags in `mkRemovedOptionModule`: it's only used
during evaluation where docbook isn't rendered.
As per the in-line comment, this is where distros should configure it.
Not via kernel command line parameters.
As found by looking at the implementation, while exploring the cause of
a bug on the Raspberry Pi 4, it was found that `cma=` on the command
line parameters will overwrite the values a device tree will have
configured for a given platform.
With this, the more recent 5.4 vendor kernel boots just fine on the
Raspberry Pi 4 using our common configuration.
This includes setting up everything for the mainline Raspberry Pi 4
image.
In fact, the only difference left in the Raspberry Pi 4-specific image
is the kernel from the vendor.
The service was failing with:
gunicorn[2192104]: [2020-12-31 13:35:28 +0000] [2192104] [ERROR] Exception in worker process
gunicorn[2192104]: Traceback (most recent call last):
gunicorn[2192104]: File "/nix/store/jmc14qf1sfnlhw27xyyj862ghkmdkj5a-python2.7-gunicorn-19.10.0/lib/python2.7/site-packages/gunicorn/arbiter.py", line 586, in spawn_worker
gunicorn[2192104]: worker.init_process()
gunicorn[2192104]: File "/nix/store/jmc14qf1sfnlhw27xyyj862ghkmdkj5a-python2.7-gunicorn-19.10.0/lib/python2.7/site-packages/gunicorn/workers/ggevent.py", line 196, in init_process
gunicorn[2192104]: self.patch()
gunicorn[2192104]: File "/nix/store/jmc14qf1sfnlhw27xyyj862ghkmdkj5a-python2.7-gunicorn-19.10.0/lib/python2.7/site-packages/gunicorn/workers/ggevent.py", line 65, in patch
gunicorn[2192104]: monkey.patch_all(subprocess=True)
gunicorn[2192104]: File "/nix/store/fysf67w3i8iv1hfvp536nl8jbzqyk1s7-python-2.7.18-env/lib/python2.7/site-packages/gevent/monkey.py", line 1160, in patch_all
gunicorn[2192104]: from gevent import events
gunicorn[2192104]: File "/nix/store/fysf67w3i8iv1hfvp536nl8jbzqyk1s7-python-2.7.18-env/lib/python2.7/site-packages/gevent/events.py", line 67, in <module>
gunicorn[2192104]: from zope.interface import Interface
gunicorn[2192104]: ImportError: No module named zope.interface
