docs: add hardware recommendation

Also add infrastructure to also generate the supported hardware
page when building the docs locally

.gitignore

@@ -6,3 +6,4 @@ result-*
 _build
 *-secrets.nix
 examples/static-leases.nix
+/doc/hardware.rst

README.md

@@ -33,7 +33,7 @@ functioning version, see [the CI system](https://build.liminix.org/jobset/limini
 Documentation is in the [doc](doc/) directory. You can build it
 by running
 
-    nix-shell -p sphinx --run "make -C doc html"
+    nix-shell -p sphinx --run "make -C doc hardware.rst html"
 
 Rendered documentation corresponding to the latest commit on `main`
 is published to [https://www.liminix.org/doc/](https://www.liminix.org/doc/)

doc/Makefile

@@ -12,9 +12,13 @@ BUILDDIR      = _build
 help:
 	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 
+hardware.rst: hardware.nix
+	@rm -f hardware.rst || true
+	@cp $$(nix-build hardware.nix) hardware.rst
+
 .PHONY: help Makefile
 
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
-%: Makefile
+html: Makefile
 	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

doc/hardware.nix

@@ -24,6 +24,15 @@ writeText "hwdoc" ''
   Supported hardware
   ##################
 
+  For development, the `GL.iNet GL-MT300A <https://www.gl-inet.com/products/gl-mt300a/>`_
+  is an attractive choice as it has a builtin "debrick" procedure in the
+  boot monitor and is also comparatively simple to
+  attach serial cables to (soldering not required), so it
+  is lower-risk than some devices.
+
+  For a more powerful device, something with an ath10k would be the safe bet,
+  or the Linksys E8450 which seems popular in the openwrt community.
+
   ${lib.concatStringsSep "\n\n" texts}
 
 ''

doc/tutorial.rst

@@ -138,6 +138,8 @@ unbrick if necessary.
 	     work here, but you accept the slightly greater bricking
 	     risk if it doesn't.
 
+See :doc:`hardware` for device support status.
+
 You may want to read and inwardly digest the Develoment Manual section
 :ref:`serial` when you start working with Liminix on real hardware. You
 won't *need* serial access for this example, assuming it works, but it