guild install throws exception when package not found

[ijp]

According to my wiki notes page, I fixed this one at some point, but I no longer have the patch

~/src/guildhall $ guild install quux
Backtrace:
In ice-9/boot-9.scm:
 157: 11 [catch #t #<catch-closure 8b24f30> ...]
In unknown file:
   ?: 10 [apply-smob/1 #<catch-closure 8b24f30>]
In ice-9/boot-9.scm:
  63: 9 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
 414: 8 [eval # #]
In /usr/local/bin/guild:
  68: 7 [main ("/usr/local/bin/guild" "install" "quux")]
In scripts/install.scm:
  95: 6 [main "quux"]
In guildhall/cli.scm:
  94: 5 [call-with-parsed-options #<directory # 8b5a630> ("quux") (# # # # ...) ...]
In guildhall/database.scm:
 273: 4 [call-with-database # ...]
In ice-9/boot-9.scm:
 171: 3 [with-throw-handler #t ...]
In guildhall/cli/ui.scm:
 137: 2 [#<procedure 929b318 at guildhall/cli/ui.scm:134:4 (args config db)> # # #]
In scripts/install.scm:
 105: 1 [#<procedure 929b360 at scripts/install.scm:103:4 (packages config db)> # ...]
In ice-9/boot-9.scm:
 106: 0 [#<procedure 98a5fa0 at ice-9/boot-9.scm:97:6 (thrown-k . args)> r6rs:exception ...]

ice-9/boot-9.scm:106:20: In procedure #<procedure 98a5fa0 at ice-9/boot-9.scm:97:6 (thrown-k . args)>:
ice-9/boot-9.scm:106:20: ERROR: R6RS exception:
  1. &fatal-error
  2. &message: "could not find any package matching `quux'"