build.tt: Show jobset eval inputs instead of build inputs

We're not recording build inputs anymore, so we now just show all
inputs of the build's first evaluation.

src/root/build.tt

@@ -366,6 +366,8 @@
 
   <div id="tabs-buildinputs" class="tab-pane">
 
+    [% IF build.inputs.size > 0 %]
+
       [% INCLUDE renderInputs inputs=build.inputs %]
 
       [% IF prevBuild %]
@@ -373,6 +375,12 @@
         [% INCLUDE renderInputDiff inputs2=build.inputs inputs1=prevBuild.inputs %]
       [% END %]
 
+    [% ELSIF eval %]
+
+      [% INCLUDE renderInputs inputs=eval.jobsetevalinputs %]
+
+    [% END %]
+
   </div>
 
   [% IF build.buildsteps %]