nixpkgs/pkgs/development/libraries/ppl/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

56 lines
1.9 KiB
Nix

{ fetchurl, stdenv, gmpxx, perl, gnum4 }:
let version = "1.0"; in
stdenv.mkDerivation rec {
name = "ppl-${version}";
src = fetchurl {
url = "http://bugseng.com/products/ppl/download/ftp/releases/${version}/ppl-${version}.tar.bz2";
sha256 = "0m0b6dzablci8mlavpsmn5w1v3r46li0wpjwvsybgxx0p1ifjsf1";
};
nativeBuildInputs = [ perl gnum4 ];
propagatedBuildInputs = [ gmpxx ];
configureFlags = [ "--disable-watchdog" ] ++
stdenv.lib.optionals stdenv.isDarwin [
"CPPFLAGS=-fexceptions"
"--disable-ppl_lcdd" "--disable-ppl_lpsol" "--disable-ppl_pips"
];
patches = [ ./upstream-based.patch ];
# Beware! It took ~6 hours to compile PPL and run its tests on a 1.2 GHz
# x86_64 box. Nevertheless, being a dependency of GCC, it probably ought
# to be tested.
doCheck = false;
enableParallelBuilding = true;
meta = {
description = "The Parma Polyhedra Library";
longDescription = ''
The Parma Polyhedra Library (PPL) provides numerical abstractions
especially targeted at applications in the field of analysis and
verification of complex systems. These abstractions include convex
polyhedra, defined as the intersection of a finite number of (open or
closed) halfspaces, each described by a linear inequality (strict or
non-strict) with rational coefficients; some special classes of
polyhedra shapes that offer interesting complexity/precision tradeoffs;
and grids which represent regularly spaced points that satisfy a set of
linear congruence relations. The library also supports finite
powersets and products of (any kind of) polyhedra and grids and a mixed
integer linear programming problem solver using an exact-arithmetic
version of the simplex algorithm.
'';
homepage = http://bugseng.com/products/ppl/;
license = stdenv.lib.licenses.gpl3Plus;
maintainers = [ ];
};
}