GNU bug report logs - #39377
guix search reports bad location for bytestructures

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Matt Wette <matt.wette <at> gmail.com>
To: bug-guix <at> gnu.org
Subject: guix search reports bad location for bytestructures
Date: Fri, 31 Jan 2020 14:07:42 -0800

I'm using guix-1.0.1 on Fedora 30, x86_64.

I wanted to get module spec for bytestructures, but failed:
location points to (guix packages), but it's actually in (gnu packages 
guile).

$ guix search bytestructures
name: guile3.0-bytestructures
version: 1.0.7
outputs: out
systems: x86_64-linux i686-linux
dependencies: autoconf <at> 2.69 automake <at> 1.16.1 guile-next <at> 3.0.0 
pkg-config <at> 0.29.2
location: guix/packages.scm:880:11
homepage: https://github.com/TaylanUB/scheme-bytestructures
license: GPL 3+
synopsis: Structured access to bytevector contents for Guile
description: Guile bytestructures offers a system imitating the type 
system of
+ the C programming language, to be used on bytevectors.  C's type 
system works
+ on raw memory, and Guile works on bytevectors which are an abstraction 
over
+ raw memory.  It's also more powerful than the C type system, elevating 
types
+ to first-class status.
relevance: 6

$ guix repl
scheme@(guix-user)> guile3.0-bytestructures
;;; <unknown-location>: warning: possibly unbound variable 
`guile3.0-bytestructures'
ERROR: error: guile3.0-bytestructures: unbound variable

Entering a new prompt.  Type `,bt' for a backtrace or `,q' to continue.
scheme@(guix-user) [1]> ,use (gnu packages guile)
scheme@(guix-user) [1]> guile3.0-bytestructures
$1 = #<package guile3.0-bytestructures <at> 1.0.7 guix/packages.scm:880 
7f639f9532c0>

Message #8 received at 39377 <at> debbugs.gnu.org (full text, mbox):

From: Ludovic Courtès <ludo <at> gnu.org>
To: Matt Wette <matt.wette <at> gmail.com>
Cc: 39377 <at> debbugs.gnu.org
Subject: Re: bug#39377: guix search reports bad location for bytestructures
Date: Sun, 02 Feb 2020 23:52:41 +0100

Hi Matt,

Matt Wette <matt.wette <at> gmail.com> skribis:

> I'm using guix-1.0.1 on Fedora 30, x86_64.
>
> I wanted to get module spec for bytestructures, but failed:
> location points to (guix packages), but it's actually in (gnu packages
> guile).
>
> $ guix search bytestructures
> name: guile3.0-bytestructures
> version: 1.0.7
> outputs: out
> systems: x86_64-linux i686-linux
> dependencies: autoconf <at> 2.69 automake <at> 1.16.1 guile-next <at> 3.0.0
> pkg-config <at> 0.29.2
> location: guix/packages.scm:880:11

The location here is that of the ‘package-input-rewriting’ procedure,
which is used to define this “guile3.0-” variant.  But note that
‘guile-bytestructures’ has the right location info:

--8<---------------cut here---------------start------------->8---
$ guix show guile-bytestructures
name: guile-bytestructures
version: 1.0.7
outputs: out
systems: x86_64-linux i686-linux
dependencies: autoconf <at> 2.69 automake <at> 1.16.1 guile <at> 2.2.6 pkg-config <at> 0.29.2
location: gnu/packages/guile.scm:594:2
--8<---------------cut here---------------end--------------->8---

We could arrange so that ‘package-input-rewriting’ preserves source
location info (that would still be somewhat inaccurate, but hopefully
less misleading.)

Ludo’.

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