guile ERROR: Unbound variable: sha256

[Pjotr Prins]

Hi Ludo,

I suspect this was introduced with bags.  When I use below Guile instruction 
running
from the CLI I get

$2 = #<package python-3.3.5 gnu/packages/python.scm:49 3976210>
scheme@(guile-user)> (package-derivation s python)
ERROR: In procedure memoize-variable-access!:
ERROR: Unbound variable: sha256

scheme@(guile-user) [1]> ,bt
In guix/packages.scm:
   584:14 17 (cache #<package python-3.3.5 gnu/packages/python.scm:49 3976210> 
"x86_64-linux" #<proced...>)
    686:6 16 (bag->derivation #<build-daemon 256.14 2ff8f80> #<<bag> name: 
"python-3.3.5" system: "...> #)
In srfi/srfi-1.scm:
   578:27 15 (map #<procedure 2995000 at guix/packages.scm:688:30 (t-43862)> 
(("source" #<origi...>) ...))
In guix/packages.scm:
   640:16 14 (expand-input #<build-daemon 256.14 2ff8f80> #<package 
python-3.3.5 gnu/packages/pytho...> ...)
   473:19 13 (package-source-derivation #<build-daemon 256.14 2ff8f80> #<origin 
"https://www.python...> #)
In guix/download.scm:
    206:4 12 (url-fetch #<build-daemon 256.14 2ff8f80> 
"https://www.python.org/ftp/python/3.3.5/Pyt..."; ...)
In guix/packages.scm:
   584:14 11 (cache #<package guile-2.0.11 gnu/packages/commencement.scm:633 
39c1210> "x86_64-linux" #)
    686:6 10 (bag->derivation #<build-daemon 256.14 2ff8f80> #<<bag> name: 
"guile-2.0.11" system: "...> #)
In srfi/srfi-1.scm:
   578:27  9 (map #<procedure 2998ed0 at guix/packages.scm:688:30 (t-43862)> 
(("source" #<origi...>) ...))
In guix/packages.scm:
   640:16  8 (expand-input #<build-daemon 256.14 2ff8f80> #<package 
guile-2.0.11 gnu/packages/comme...> ...)
In guix/download.scm:
    206:4  7 (url-fetch #<build-daemon 256.14 2ff8f80> 
"mirror://gnu/guile/guile-2.0.11.tar.xz" sha256 ...)
In guix/packages.scm:
   584:14  6 (cache #<package guile-bootstrap-2.0 
gnu/packages/bootstrap.scm:220 2c2f6e0> "x86_64-l..." #)
In ice-9/eval.scm:
   411:25  5 (eval #<memoized (let ((_ (<7> <0>))) (let ((_ (add-text-to-store 
<22> (string-append ...> #)
   411:25  4 (eval #<memoized (let ((_ (#<variable 28c6ae0 value: #<procedure 
derivation-hash args>...> #)
In guix/utils.scm:
   426:27  3 (derivation-hash #<derivation #f =>  2af8dc0>)
In ice-9/eval.scm:
    386:9  2 (eval #<memoized (sha256 (string->utf8 (derivation->string <0>)))> 
(#<derivation #f ...> . #))
   393:14  1 (eval #<memoized sha256> (#<derivation #f =>  2af8d70> () (("out" 
. "")) (("out" . "")) . #))
In unknown file:
           0 (memoize-variable-access! #<memoized sha256> #<directory (guix 
derivations) 27dc480>)

On Mon, May 05, 2014 at 10:03:30AM +0200, Ludovic Courtès wrote:
> It may be helpful to have a ???ruby-build-system???, akin to
> ???python-build-system??? but with the right incantations (info "(guix)
> Build Systems").
> 
> > Do we have a HOWTO on how to run expressions in the Guile debugger?
> > Never used that and would like to see how individual statements
> > evaluate in LISP.
> 
> Basically there are two approaches.  From the command line, like this:
> 
> --8<---------------cut here---------------start------------->8---
> $ ./pre-inst-env guile
> GNU Guile 2.0.11.20-4338f
> Copyright (C) 1995-2014 Free Software Foundation, Inc.
> 
> Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'.
> This program is free software, and you are welcome to redistribute it
> under certain conditions; type `,show c' for details.
> 
> Enter `,help' for help.
> scheme@(guile-user)> ,use (gnu packages python)
> scheme@(guile-user)> ,use (guix)
> scheme@(guile-user)> (define s (open-connection))
> scheme@(guile-user)> python
> $1 = #<package python-3.3.5 gnu/packages/python.scm:46 2946840>
> scheme@(guile-user)> (package-derivation s python)
> $2 = #<derivation 
> /gnu/store/k0lvsy8jwcw0amv1rsmii2cvwfnmn2gz-python-3.3.5.drv => 
> /gnu/store/ij8xgynicdmnzb7pzmyb6bqi17s0ll3y-python-3.3.5 3f4fdc0>
> scheme@(guile-user)> (build-derivations s (list $2))
> $3 = #t
> --8<---------------cut here---------------end--------------->8---
> 
> But the best thing, if you use Emacs, is to use Geiser, as noted in
> ???HACKING???.  In addition to a REPL, it brings stuff like autodoc,
> jump-to-definition, expression evaluation from the buffer, etc.
> 
> > I am really impressed with GUIX, and I think it is a no-brainer to use
> > a real functional programming language for this. Thanks Ludo and
> > others!  I just wish I could use GUIX on servers where I don't have (and
> > won't get) root access. Or is there a way? With Nix I could run as a
> > normal user.
> 
> It???s the same as Nix, which means that if the daemon cannot run as root,
> then it???s usable in a ???degraded??? mode (info "(guix) Build Environment
> Setup").
> 
> HTH,
> Ludo???.
>