bug#74895: Bug in compute-guix-derivation

[Drew Jose]

Output pasted here:

Backtrace:
          17 (primitive-load 
"/gnu/store/flaqwpkc12w1kwjqs5a6njr8nbxmbns3-compute-guix-derivation")
In ice-9/eval.scm:
    155:9 16 (_ _)
    159:9 15 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> ?) ?) ?) 
?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
    152:2 14 (with-fluid* _ _ _)
    152:2 13 (with-fluid* _ _ _)
In guix/store.scm:
  2210:24 12 (run-with-store #<store-connection 256.99 7ff79f3870a0> 
#<procedure 7ff78038ee10 at guix/self.scm:1365?> ?)
   2038:8 11 (_ #<store-connection 256.99 7ff79f3870a0>)
In guix/gexp.scm:
   300:22 10 (_ #<store-connection 256.99 7ff79f3870a0>)
   1218:2  9 (_ #<store-connection 256.99 7ff79f3870a0>)
   1085:2  8 (_ #<store-connection 256.99 7ff79f3870a0>)
    926:4  7 (_ #<store-connection 256.99 7ff79f3870a0>)
In guix/store.scm:
  2095:12  6 (_ #<store-connection 256.99 7ff79f3870a0>)
   1433:5  5 (map/accumulate-builds #<store-connection 256.99 7ff79f3870a0> 
#<procedure 7ff78b634cc0 at guix/store.?> ?)
  1449:15  4 (_ #<store-connection 256.99 7ff79f3870a0> 
("/gnu/store/aynip4d3gparb4mkq9zzviafmnx0dsmp-guix-daemo?" ?) ?)
  1449:15  3 (loop #f)
   746:11  2 (process-stderr #<store-connection 256.99 7ff79f3870a0> _)
In guix/serialization.scm:
   101:11  1 (read-int #<input-output: file 10>)
     79:6  0 (get-bytevector-n* #<input-output: file 10> 8)

guix/serialization.scm:79:6: In procedure get-bytevector-n*:
ERROR:
  1. &nar-error:
      file: #f
      port: #<input-output: file 10>
guix pull: error: You found a bug: the program 
'/gnu/store/flaqwpkc12w1kwjqs5a6njr8nbxmbns3-compute-guix-derivation'
failed to compute the derivation for Guix (version: 
"cfd4f56f75a20b6732d463180d211f796c9032e5"; system: "x86_64-linux";
host version: "3e2442de5268782213b04048463fcbc5d76accd7"; pull-version: 1).