Backtrace:
In ice-9/boot-9.scm:
 157: 11 [catch #t #<catch-closure 915df70> ...]
In unknown file:
   ?: 10 [apply-smob/1 #<catch-closure 915df70>]
In ice-9/boot-9.scm:
  63: 9 [call-with-prompt prompt0 ...]
In ice-9/eval.scm:
 432: 8 [eval # #]
In unknown file:
   ?: 7 [call-with-input-string "(apply (@ (list-packages) list-packages)\n             (cdr (command-line)))" ...]
In ice-9/command-line.scm:
 180: 6 [#<procedure 9163ca0 at ice-9/command-line.scm:175:6 (port)> #<input: string 903da50>]
In unknown file:
   ?: 5 [eval (apply (@ # list-packages) (cdr #)) #<directory (guile-user) 90ec630>]
In build-aux/list-packages.scm:
 229: 4 [list-packages]
 201: 3 [insert-css]
In ice-9/boot-9.scm:
 793: 2 [call-with-input-file "/home/alex/projects/guix/build-aux/package-list.css" ...]
In ice-9/r4rs.scm:
 172: 1 [with-input-from-port #<variable 98b7c40 value: #<input: file /dev/pts/3>> ...]
In build-aux/list-packages.scm:
 202: 0 [#<procedure 993d4b0 at build-aux/list-packages.scm:202:8 (t-839)>]

build-aux/list-packages.scm:202:8: In procedure #<procedure 993d4b0 at build-aux/list-packages.scm:202:8 (t-839)>:
build-aux/list-packages.scm:202:8: Wrong number of arguments to #<procedure 993d4b0 at build-aux/list-packages.scm:202:8 (t-839)>