+ '(#:parallel-build? #f
+
+ #:phases
+ (modify-phases %standard-phases
+ (add-before 'configure 'add-libgrypt-config
+ (lambda* (#:key inputs target #:allow-other-keys)
+ (when target
+ ;; When cross-compiling, the bash script 'libgcrypt-config'
+ ;; must be accessible during the configure phase.
+ (setenv "PATH"
+ (string-append (assoc-ref inputs "libgcrypt")
+ "/bin:" (getenv "PATH")))))))))