+ (arguments
+ `(#:phases
+ (modify-phases %standard-phases
+ (add-after 'install 'wrap-program
+ (lambda* (#:key inputs outputs #:allow-other-keys)
+ (let ((out (assoc-ref outputs "out"))
+ (gnupg (assoc-ref inputs "gnupg")))
+ (wrap-program (string-append out "/bin/gpa")
+ `("PATH" ":" prefix (,(string-append gnupg "/bin"))))
+ #t))))))