nixpkgs/pkgs/tools/misc/parallel/default.nix
Bjørn Forsman c9baba9212 Fix many package descriptions
(My OCD kicked in today...)

Remove repeated package names, capitalize first word, remove trailing
periods and move overlong descriptions to longDescription.

I also simplified some descriptions as well, when they were particularly
long or technical, often based on Arch Linux' package descriptions.

I've tried to stay away from generated expressions (and I think I
succeeded).

Some specifics worth mentioning:
 * cron, has "Vixie Cron" in its description. The "Vixie" part is not
   mentioned anywhere else. I kept it in a parenthesis at the end of the
   description.

 * ctags description started with "Exuberant Ctags ...", and the
   "exuberant" part is not mentioned elsewhere. Kept it in a parenthesis
   at the end of description.

 * nix has the description "The Nix Deployment System". Since that
   doesn't really say much what it is/does (especially after removing
   the package name!), I changed that to "Powerful package manager that
   makes package management reliable and reproducible" (borrowed from
   nixos.org).

 * Tons of "GNU Foo, Foo is a [the important bits]" descriptions
   is changed to just [the important bits]. If the package name doesn't
   contain GNU I don't think it's needed to say it in the description
   either.
2014-08-24 22:31:37 +02:00

52 lines
1.6 KiB
Nix

{ fetchurl, stdenv, perl }:
stdenv.mkDerivation rec {
name = "parallel-20140222";
src = fetchurl {
url = "mirror://gnu/parallel/${name}.tar.bz2";
sha256 = "0zb3hg92br6a53jn0pzfl16ffc1hfw81jk7nzw5spkshsdrcqx3y";
};
patchPhase =
'' sed -i "src/parallel" -e's|/usr/bin/perl|${perl}/bin/perl|g'
'';
preBuild =
# The `sem' program wants to write to `~/.parallel'.
'' export HOME="$PWD"
'';
buildInputs = [ perl ];
doCheck = true;
meta = {
description = "Shell tool for executing jobs in parallel";
longDescription =
'' GNU Parallel is a shell tool for executing jobs in parallel. A job
is typically a single command or a small script that has to be run
for each of the lines in the input. The typical input is a list of
files, a list of hosts, a list of users, or a list of tables.
If you use xargs today you will find GNU Parallel very easy to use.
If you write loops in shell, you will find GNU Parallel may be able
to replace most of the loops and make them run faster by running
jobs in parallel. If you use ppss or pexec you will find GNU
Parallel will often make the command easier to read.
GNU Parallel makes sure output from the commands is the same output
as you would get had you run the commands sequentially. This makes
it possible to use output from GNU Parallel as input for other
programs.
'';
homepage = http://www.gnu.org/software/parallel/;
license = stdenv.lib.licenses.gpl3Plus;
platforms = stdenv.lib.platforms.all;
maintainers = [ ];
};
}