Openssl missing in CPATH

[Andreas Enge <andreas@enge.fr>]

[-- Attachment #1.1: Type: text/plain, Size: 1333 bytes --]

Hello,

the attached recipe with openssl in its inputs fails, as it does not find 
the openssl include files:

checking openssl/evp.h usability... no
checking openssl/evp.h presence... no
checking for openssl/evp.h... no
checking for OpenSSL... no
checking DIGEST-MD5... enabled
configure: WARNING: OpenSSL not found -- SCRAM will be disabled
checking SCRAM... disabled

When installing the openssl package, I do have the file
include/openssl/evp.h in my profile, as a link to
/nix/store/rxsqxs7n8dkhw54r00g93gf37xjhb7fh-
openssl-1.0.1c/include/openssl/evp.h

In the cyrus-sasl build directory, the file "environment-variables" 
contains a line:
export CPATH='/nix/store/y8i17ibf1vh20h8dzacq565wpbz71s7r-
gdbm-1.10/include:/nix/store/4pbng4mkvxvy5izihl9f4qykqmhh8a5h-mit-
krb5-1.11/include:/nix/store/5b0da95s9q5jw1xb03f2f3igkjfmiaxw-
bzip2-1.0.6/include:/nix/store/6f2124kaa8vylm12zgc159ayz6r47ki0-
xz-5.0.4/include:/nix/store/ha1d1q6ynwcljarlrvwx1j8l6rhq5rdl-
binutils-2.22/include:/nix/store/7qzabzlgsxlmihnyrrvsgkvidqxh07s9-
gcc-4.7.2/include:/nix/store/s0y9jzrbpypi6m2snvi8xz84i08n1v0k-
glibc-2.16.0/include:/nix/store/xmdfvb4lvihm8x0w8sxs0izwnmpxaq4l-linux-
libre-headers-3.3.8/include'
There is an entry for the inputs gdbm and mit-krb5, but none for openssl. 
Do you have an explanation or solution for the problem?

Andreas

[-- Attachment #1.2: Type: text/html, Size: 4846 bytes --]

[-- Attachment #2: cyrus-sasl.scm --]
[-- Type: text/x-scheme, Size: 2224 bytes --]

;;; Guix --- Nix package management from Guile.         -*- coding: utf-8 -*-
;;; Copyright (C) 2012 Andreas Enge <andreas@enge.fr>
;;;
;;; This file is part of Guix.
;;;
;;; Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (distro packages cyrus-sasl)
  #:use-module (distro)
  #:use-module (distro packages gdbm)
  #:use-module (distro packages mit-krb5)
  #:use-module (distro packages openssl)
  #:use-module ((guix licenses)
                #:renamer (symbol-prefix-proc 'license:))
  #:use-module (guix packages)
  #:use-module (guix download)
  #:use-module (guix build-system gnu))

(define-public cyrus-sasl
  (package
   (name "cyrus-sasl")
   (version "2.1.26")
   (source (origin
            (method url-fetch)
            (uri (string-append "ftp://ftp.cyrusimap.org/cyrus-sasl/cyrus-sasl-" version
                                ".tar.gz"))
            (sha256 (base32
                     "1hvvbcsg21nlncbgs0cgn3iwlnb3vannzwsp6rwvnn9ba4v53g4g"))))
   (build-system gnu-build-system)
   (inputs `(("gdbm" ,gdbm)
             ("mit-krb5" ,mit-krb5)
             ("openssl" ,openssl)
             ))
   (synopsis "Cyrus SASL, an implementation of the Simple Authentication Security Layer framework")
   (description
    "SASL (Simple Authentication Security Layer) is an Internet
standards-track method for remote computers to authenticate. The Cyrus SASL
library makes supporting various SASL mechanisms easy for both client and
server writers.")
   (license (license:bsd-style "file://COPYING"
                       "See COPYING in the distribution."))
   (home-page "http://cyrusimap.web.cmu.edu/index.php")))