From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Enge <andreas@enge.fr>
Subject: Re: libxml2-python
Date: Fri, 8 Mar 2013 13:13:03 +0100
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	<201303072338.13585.andreas@enge.fr> <87d2vakd22.fsf@gnu.org>
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To: Ludovic =?utf-8?q?Court=C3=A8s?= <ludo@gnu.org>
Cc: bug-guix@gnu.org

Am Freitag, 8. M=C3=A4rz 2013 schrieb Ludovic Court=C3=A8s:
> Glibc is automatically added as an input, under the name =E2=80=9Cglibc=
=E2=80=9D (see
> build-system/gnu.scm).
>=20
> So you can just do something like:
>=20
>   (lambda* (#:key inputs #:allow-other-keys)
>     (substitute* "setup.py"
>       (("/usr/include")
>        (string-append (assoc-ref inputs "glibc") "/include"))))

That is what I tried first, but it does not work:
    (arguments
     `(#:phases
        (alist-replace
         'install
         (lambda* (#:key inputs outputs #:allow-other-keys #:rest args)
          (let ((install (assoc-ref %standard-phases 'install))
                (glibc (assoc-ref inputs "glibc"))
                (out (assoc-ref outputs "out")))
            (apply install args)
            (chdir "python")
            (substitute* "setup.py" (("/opt/include") (string-append glibc=
=20
"/include")))
            (system* "python" "setup.py" "install" (string-append "--
prefix=3D" out))))
        %standard-phases)))

yields
=2E..
In unknown file:
   ?: 1 [string-append #f "/include"]
In ice-9/boot-9.scm:
 106: 0 [#<procedure 2347b40 at ice-9/boot-9.scm:97:6 (thrown-k . args)>=20
wrong-type-arg ...]

Indeed, the key of the hash table is "libc" and not "glibc". I think it=20
would be better to change it to "glibc" (which is what both of us thought=20
naturally that it was already). I think this occurrence needs to be=20
changed:
  ./gnu/packages/base.scm:1091:      ("libc" ,glibc-final))))
in %final-inputs, and probably other places to be coherent.

Andreas