<p></p>
<p><b>@MrKevinWeiss</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/RIOT-OS/RIOT/pull/16837#discussion_r712105637">boards/common/nrf52/Kconfig</a>:</p>
<pre style='color:#555'>> +choice
+    bool "Backend"
+    depends on MODULE_NETDEV_DEFAULT
+    default NRF802154
+    default NRFBLE
+
+config NRF802154
+    bool "nrf802154"
+    select MODULE_NRF802154
+
+config NRFBLE
+    bool "nrfble"
+    select MODULE_NRFBLE
+
+config NRFMIN
+    bool "nrfmin"
+    select MODULE_NRFMIN
+
+endchoice
</pre>
<p>I started <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="995713334" data-permission-text="Title is private" data-url="https://github.com/RIOT-OS/RIOT/issues/16845" data-hovercard-type="pull_request" data-hovercard-url="/RIOT-OS/RIOT/pull/16845/hovercard" href="https://github.com/RIOT-OS/RIOT/pull/16845">#16845</a> with the HAVE_* but think maybe that is not the best way to move forward.  I think the stage of discussion we are at is:</p>
<p>The boards/cpu  can select things based on other modules enabled (in my case <code>STDIO</code>, in your case <code>NETDEV_DEFAULT</code>) if selecting is simple and don't have many dependencies or so many options.<br>
The <code>HAVE_*</code> is like <code>FEATURES_PROVIDED</code> for the features that are not provided in the makefile.</p>
<p>I am still pretty murky of the issues that can arise so it may be good to get together and work through the corner cases.</p>

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