bug#39810: emacs-flycheck-grammalecte build fails

[Maxim Cournoyer]

Extract of build log:

starting phase `link-to-grammalecte'
Backtrace:
           7 (primitive-load "/gnu/store/aw8l5h6q9nv7njm93cg49dpi60p…")
In ice-9/eval.scm:
   191:35  6 (_ #f)
In ice-9/boot-9.scm:
    829:9  5 (catch srfi-34 #<procedure 7fffeed83080 at /gnu/store/…> …)
In srfi/srfi-1.scm:
   863:16  4 (every1 #<procedure 7fffeed83040 at /gnu/store/w851knb…> …)
In 
/gnu/store/w851knbmn8kxngmh9s43z9rnannsni7k-module-import/guix/build/gnu-build-system.scm:
   839:30  3 (_ _)
In ice-9/eval.scm:
    619:8  2 (_ #(#(#(#<directory (guile-user) 7fffefc64140>) # #) …))
In ice-9/boot-9.scm:
    140:2  1 (dynamic-wind #<procedure 7fffeec6ff80 at ice-9/eval.s…> …)
In unknown file:
           0 (chdir "/gnu/store/0dda7szrsyb55fn2wymbf05acz3b95pq-ema…")

ERROR: In procedure chdir:
In procedure chdir: No such file or directory