(repl-version 0 1 1)
Generating package cache for '/gnu/store/81bi587flxs784vqajad30fpmpl1khdi-profile'...

Backtrace:
In guix/repl.scm:
    141:4 19 (machine-repl _ _)
    126:7 18 (_)
In ice-9/boot-9.scm:
  1747:15 17 (with-exception-handler #<procedure 7fffedfb2120 at ic…> …)
  1752:10 16 (with-exception-handler _ _ #:unwind? _ # _)
In guix/repl.scm:
    99:21 15 (_)
In unknown file:
          14 (_ #<procedure 7fffee001e80 at guix/repl.scm:100:25 ()> …)
          13 (primitive-load "/gnu/store/j86551n3zfj4j49qgswvjmkwff4…")
In ice-9/boot-9.scm:
  1752:10 12 (with-exception-handler _ _ #:unwind? _ # _)
In gnu/packages.scm:
   466:11 11 (generate-package-cache _)
In srfi/srfi-1.scm:
   460:18 10 (fold #<procedure expand-cache expr> _ _)
In gnu/packages.scm:
   426:37  9 (expand-cache . _)
In guix/packages.scm:
  1444:17  8 (supported-package? #<package python24-pyx@0.12.1 past…> …)
In guix/memoization.scm:
    101:0  7 (_ #<hash-table 7fffdb945b60 25087/28099> #<package py…> …)
In guix/packages.scm:
  1422:39  6 (_)
  1692:16  5 (package->bag _ _ _ #:graft? _)
  1796:47  4 (thunk)
In past/packages/python.scm:
   740:20  3 (native-inputs #<package python24-pyx@0.12.1 past/packa…>)
In ice-9/boot-9.scm:
  1685:16  2 (raise-exception _ #:continuable? _)
  1780:13  1 (_ #<&compound-exception components: (#<&undefined-vari…>)
In unknown file:
           0 (backtrace #<undefined>)

(exception unbound-variable (value #f) (value "Unbound variable: ~S") (value (texlive-union)) (value #f))