doc: Make outputs list configurable

doc/_support/devices/generate-devices-listing.rb

@@ -5,11 +5,11 @@ def githubURL(device)
   "https://github.com/NixOS/mobile-nixos/tree/master/devices/#{device}"
 end
 
-def hydraURL(device)
+def hydraURL(job)
   # Yes, x86_64-linux is by design.
   # We're using the pre-built images, cross-compiled.
   # If we used the native arch, we'd be in trouble with armv7l.
-  "https://hydra.nixos.org/job/mobile-nixos/unstable/device.#{device}.x86_64-linux"
+  "https://hydra.nixos.org/job/mobile-nixos/unstable/#{job}"
 end
 
 def yesno(bool)
@@ -103,7 +103,15 @@ $devicesInfo.values.each do |info|
     Architecture:: #{info["system"]["system"]}
     Supports Stage-0:: #{yesno(info["quirks"]["supportsStage-0"])}
     Source:: link:#{githubURL(identifier)}[Mobile NixOS repository]
-    Builds:: link:#{hydraURL(identifier)}[Hydra (`default` build)]
+
+    Builds::
+    #{
+      info["documentation"]["hydraOutputs"].map do |pair|
+        output, name = pair
+        "* link:#{hydraURL(output.gsub("@device@",identifier))}[#{name}]"
+      end.join("\n")
+    }
+
     ****
 
     EOF

modules/documentation.nix

@@ -12,9 +12,19 @@ in
         default = ./system-types + "/${config.mobile.system.type}/device-notes.adoc.erb";
         internal = true;
       };
+      hydraOutputs = mkOption {
+        type = with types; (listOf (listOf str));
+        description = "@device@ will be replaced with the device identifer.";
+        internal = true;
+      };
     };
   };
   config = {
     documentation.nixos.options.splitBuild = false;
+    mobile.documentation.hydraOutputs = lib.mkAfter [
+      # x86_64-linux since we link to the cross-compiled build.
+      # TODO: link to native builds?
+      ["device.@device@.x86_64-linux" "`default` output status"]
+    ];
   };
 }