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guix-package: Report `--search' matches in recutils format.

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* guix/ui.scm (fill-paragraph, string->recutils, package->recutils): New
  procedures.
* guix-package.in (guix-package)[process-query]: Use `package->recutils'
  to display package meta-data.
* tests/guix-package.sh: Adjust test.
* tests/ui.scm: New file.
* Makefile.am (TESTS): Add it.
* doc/guix.texi (Invoking guix-package): Adjust `--search'
  documentation, and give an example.
This commit is contained in:
Ludovic Courtès
2013-02-01 13:16:27 +01:00
parent aa92cf980c
commit 299112d36e
6 changed files with 188 additions and 10 deletions
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17
doc/guix.texi
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@@ -546,10 +546,21 @@ availability of packages:
@item --search=@var{regexp}
@itemx -s @var{regexp}
List the available packages whose synopsis or description matches
@var{regexp}.
@var{regexp}. Print all the meta-data of matching packages in
@code{recutils} format (@pxref{Top, GNU recutils databases,, recutils,
GNU recutils manual}).
For each package, print the following items, separated by tabs: its
name, version, and the source location of its definition.
This allows specific fields to be extracted using the @command{recsel}
command, for instance:
@example
$ guix-package -s malloc | recsel -p name,version
name: glibc
version: 2.17
name: libgc
version: 7.2alpha6
@end example
@item --list-installed[=@var{regexp}]
@itemx -I [@var{regexp}]