gettext build failing at gnulib-tool --import

[Daiki Ueno]

Hello,

Since February 1st, gettext has been failing at gnulib-tool --import:

  Creating directory gettext-runtime/../build-aux/snippet
  Creating directory gettext-runtime/gnulib-lib/glthread
  Creating directory gettext-runtime/gnulib-lib/unistr
  Creating directory gettext-runtime/gnulib-lib/uniwidth
  /nix/store/<snip>-git-export/gnulib-tool: line 4718: 
gettext-runtime/../build-aux/config.libpath.tmp: Permission denied
  /nix/store/<snip>-git-export/gnulib-tool: *** failed
  /nix/store/<snip>-git-export/gnulib-tool: *** Stop.

http://hydra.nixos.org/build/19285836

Since the only changes from the previous successful build are unlikely
to affect the build, and I cannot repeat it with the (slightly modified)
'reproduce' script, I suspect that there is something wrong in the build
environment.

Could anyone take a look at it?

Thanks!
--
Daiki Ueno