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.

8 files changed, 8 insertions, 8 deletions

diff --git a/pkgs/applications/audio/beast/default.nix b/pkgs/applications/audio/beast/default.nix
index 61b11c05de7..340a83e7963 100644
--- a/pkgs/applications/audio/beast/default.nix
+++ b/pkgs/applications/audio/beast/default.nix
@@ -30,7 +30,7 @@ stdenv.mkDerivation {
     ];
 
   meta = { 
-    description = "BEAST - the Bedevilled Sound Engine";
+    description = "A music composition and modular synthesis application";
     homepage = http://beast.gtk.org;
     license = ["GPL-2" "LGPL-2.1"];
   };
diff --git a/pkgs/applications/audio/cmus/default.nix b/pkgs/applications/audio/cmus/default.nix
index 2ea37e2bd23..4f9c491a3a5 100644
--- a/pkgs/applications/audio/cmus/default.nix
+++ b/pkgs/applications/audio/cmus/default.nix
@@ -14,7 +14,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ ncurses pkgconfig alsaLib flac libmad ffmpeg libvorbis mpc mp4v2 ];
 
   meta = {
-    description = "cmus is a small, fast and powerful console music player for Linux and *BSD";
+    description = "Small, fast and powerful console music player for Linux and *BSD";
     homepage = http://cmus.sourceforge.net;
     license = stdenv.lib.licenses.gpl2;
   };
diff --git a/pkgs/applications/audio/moc/default.nix b/pkgs/applications/audio/moc/default.nix
index e5264f5c3d2..5c6a1d6ac54 100644
--- a/pkgs/applications/audio/moc/default.nix
+++ b/pkgs/applications/audio/moc/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = {
-    description = "MOC (music on console) is a console audio player for LINUX/UNIX designed to be powerful and easy to use.";
+    description = "An ncurses console audio player designed to be powerful and easy to use";
     homepage = http://moc.daper.net/;
     license = stdenv.lib.licenses.gpl2;
   };
diff --git a/pkgs/applications/audio/mp3info/default.nix b/pkgs/applications/audio/mp3info/default.nix
index 0f33726eaee..ede31ac9beb 100644
--- a/pkgs/applications/audio/mp3info/default.nix
+++ b/pkgs/applications/audio/mp3info/default.nix
@@ -23,7 +23,7 @@ stdenv.mkDerivation rec {
     '';
 
   meta = {
-    description = "MP3Info, an MP3 technical info viewer and ID3 1.x tag editor";
+    description = "MP3 technical info viewer and ID3 1.x tag editor";
 
     longDescription =
       '' MP3Info is a little utility used to read and modify the ID3 tags of
diff --git a/pkgs/applications/audio/mpc123/default.nix b/pkgs/applications/audio/mpc123/default.nix
index cd4343b1beb..ac945bee7f7 100644
--- a/pkgs/applications/audio/mpc123/default.nix
+++ b/pkgs/applications/audio/mpc123/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://mpc123.sourceforge.net/;
 
-    description = "mpc123, a Musepack (.mpc) audio player";
+    description = "A Musepack (.mpc) audio player";
 
     license = stdenv.lib.licenses.gpl2Plus;
 
diff --git a/pkgs/applications/audio/mpg321/default.nix b/pkgs/applications/audio/mpg321/default.nix
index e58397350cb..939c9f79e4d 100644
--- a/pkgs/applications/audio/mpg321/default.nix
+++ b/pkgs/applications/audio/mpg321/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
   buildInputs = [libao libid3tag libmad zlib];
 
   meta = {
-    description = "mpg321, a command-line MP3 player";
+    description = "Command-line MP3 player";
     homepage = http://mpg321.sourceforge.net/;
     license = stdenv.lib.licenses.gpl2;
     maintainers = [ ];
diff --git a/pkgs/applications/audio/pamixer/default.nix b/pkgs/applications/audio/pamixer/default.nix
index acdda1799d0..d273c238177 100644
--- a/pkgs/applications/audio/pamixer/default.nix
+++ b/pkgs/applications/audio/pamixer/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    description = "pamixer is like amixer but for pulseaudio.";
+    description = "Like amixer but for pulseaudio";
     longDescription = "Features:
       - Get the current volume of the default sink, the default source or a selected one by his id
       - Set the volume for the default sink, the default source or any other device
diff --git a/pkgs/applications/audio/spotify/default.nix b/pkgs/applications/audio/spotify/default.nix
index 59b82d155da..47919a7d7f8 100644
--- a/pkgs/applications/audio/spotify/default.nix
+++ b/pkgs/applications/audio/spotify/default.nix
@@ -148,7 +148,7 @@ stdenv.mkDerivation {
 
   meta = {
     homepage = https://www.spotify.com/;
-    description = "Spotify for Linux allows you to play music from the Spotify music service";
+    description = "Play music from the Spotify music service";
     license = stdenv.lib.licenses.unfree;
     maintainers = [ stdenv.lib.maintainers.eelco ];
   };