bug#47760: guix pull: error: You found a bug

["Mikko Räsänen via Bug reports for GNU Guix" <bug-guix@gnu.org>]

applying 3 grafts for 
/gnu/store/cdnrvbr03nhg8ly1msi65lz4m8k5l3cl-curl-7.76.0.drv ...
building /gnu/store/lam6h0qnr7bj7mr5hlix4glnf5f2wymk-zip-3.0.drv...
Backtrace:
           13 (primitive-load 
"/gnu/store/cb3nbg7bw5g483i71qs62jv1vy0gg00z-compute-guix-derivation")
In ice-9/eval.scm:
     155:9 12 (_ _)
     159:9 11 (_ #(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#(#<directory (guile-u?> 
?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?) ?))
In ice-9/boot-9.scm:
     152:2 10 (with-fluid* _ _ _)
     152:2  9 (with-fluid* _ _ _)
In ./guix/store.scm:
   2066:24  8 (run-with-store #<store-connection 256.99 7f8c78b4ebe0> _ 
#:guile-for-build _ #:system _ #:target _)
    1900:8  7 (_ _)
In ./guix/gexp.scm:
    256:18  6 (_ _)
    1137:2  5 (_ _)
    1003:2  4 (_ _)
     849:4  3 (_ _)
In ./guix/store.scm:
   1948:12  2 (_ #<store-connection 256.99 7f8c78b4ebe0>)
    1362:5  1 (map/accumulate-builds #<store-connection 256.99 
7f8c78b4ebe0> _ _)
   1373:15  0 (_ #<store-connection 256.99 7f8c78b4ebe0> _ _)

./guix/store.scm:1373:15: ERROR:
   1. &store-protocol-error:
       message: "while setting up the build environment: getting 
attributes of path `/etc/nsswitch.conf': No such file or directory"
       status: 1
guix pull: error: You found a bug: the program 
'/gnu/store/cb3nbg7bw5g483i71qs62jv1vy0gg00z-compute-guix-derivation'
failed to compute the derivation for Guix (version: 
"82543e9649da2da9a5285ede4ec4f718fd740fcb"; system: "x86_64-linux";
host version: "1.2.0"; pull-version: 1).
Please report it by email to <bug-guix@gnu.org>