Merge branch 'm/chat-eval' (#2009)

* m/chat-eval:
  chat: include .^ paths in its eval failure case
  chat: improve eval implementation

Signed-off-by: Jared Tobin <jared@tlon.io>

pkg/arvo/lib/chat/eval.hoon

@@ -2,15 +2,22 @@
 ++  eval
   |=  [=bowl:gall =hoon]
   ^-  (list tank)
-  =/  subj=[our=@p now=@da eny=@uvJ]
+  =/  fowl=[our=@p now=@da eny=@uvJ]
     :+  our.bowl
       now.bowl
     (shaz (cat 3 (mix [now eny]:bowl) %eny))
   ::
-  ;;  (list tank)
-  =<  +>
-  %+  mong
-    :-  mute
-    |.([(sell (slap (slop !>(subj) !>(..zuse)) hoon))]~)
-  |=(^ ~)
+  =/  subject  [fowl ..zuse]
+  =/  minted=(each [=type =nock] (list tank))
+    %-  mule  |.
+    (~(mint ut -:!>(subject)) %noun hoon)
+  ?:  ?=(%| -.minted)  p.minted
+  =/  =toon
+    (mock [subject nock.p.minted] |=(^ ~))
+  ?-  -.toon
+    %0  [(sell type.p.minted p.toon) ~]
+    %1  :-  leaf+".^ unsupported in chat eval"
+        (turn ;;((list path) p.toon) smyt)
+    %2  [leaf+"crash!" p.toon]
+  ==
 --