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.

10 files changed, 10 insertions, 11 deletions

diff --git a/pkgs/applications/misc/bitcoin/default.nix b/pkgs/applications/misc/bitcoin/default.nix
index e38d427be8d..d7c1fbc487b 100644
--- a/pkgs/applications/misc/bitcoin/default.nix
+++ b/pkgs/applications/misc/bitcoin/default.nix
@@ -35,7 +35,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-      description = "Bitcoin is a peer-to-peer currency";
+      description = "Peer-to-peer electronic cash system";
       longDescription= ''
         Bitcoin is a free open source peer-to-peer electronic cash system that is
         completely decentralized, without the need for a central server or trusted
diff --git a/pkgs/applications/misc/camlistore/default.nix b/pkgs/applications/misc/camlistore/default.nix
index 56131425ab4..9adac335c0c 100644
--- a/pkgs/applications/misc/camlistore/default.nix
+++ b/pkgs/applications/misc/camlistore/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    description = "Camlistore is a way of storing, syncing, sharing, modelling and backing up content";
+    description = "A way of storing, syncing, sharing, modelling and backing up content";
     homepage = https://camlistore.org;
     license = licenses.asl20;
     maintainers = with maintainers; [ cstrahan ];
diff --git a/pkgs/applications/misc/gpsbabel/default.nix b/pkgs/applications/misc/gpsbabel/default.nix
index bf44f91056d..5d4c2634952 100644
--- a/pkgs/applications/misc/gpsbabel/default.nix
+++ b/pkgs/applications/misc/gpsbabel/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation {
   doCheck = true;
 
   meta = {
-    description = "GPSBabel, a tool to convert, upload and download data from GPS and Map programs";
+    description = "Convert, upload and download data from GPS and Map programs";
 
     longDescription = ''
       GPSBabel converts waypoints, tracks, and routes between popular
diff --git a/pkgs/applications/misc/gv/default.nix b/pkgs/applications/misc/gv/default.nix
index 4867bef1f71..3fad634b18b 100644
--- a/pkgs/applications/misc/gv/default.nix
+++ b/pkgs/applications/misc/gv/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation {
 
   meta = {
     homepage = http://www.gnu.org/software/gv/;
-    description = "GNU gv, a PostScript/PDF document viewer";
+    description = "PostScript/PDF document viewer";
 
     longDescription = ''
       GNU gv allows users to view and navigate through PostScript and
diff --git a/pkgs/applications/misc/posterazor/default.nix b/pkgs/applications/misc/posterazor/default.nix
index 0cad2fbd2cd..38fac21322c 100644
--- a/pkgs/applications/misc/posterazor/default.nix
+++ b/pkgs/applications/misc/posterazor/default.nix
@@ -27,7 +27,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = "http://posterazor.sourceforge.net/";
-    description = "The PosteRazor cuts a raster image into pieces which can afterwards be printed out and assembled to a poster";
+    description = "Cuts a raster image into pieces which can afterwards be printed out and assembled to a poster";
     maintainers = [ stdenv.lib.maintainers.madjar ];
     platforms = stdenv.lib.platforms.all;
   };
diff --git a/pkgs/applications/misc/stardict/stardict.nix b/pkgs/applications/misc/stardict/stardict.nix
index 1ca8ec045d6..d4c41edde30 100644
--- a/pkgs/applications/misc/stardict/stardict.nix
+++ b/pkgs/applications/misc/stardict/stardict.nix
@@ -37,8 +37,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    description = "stardict";
-    homepage = "A international dictionary supporting fuzzy and glob style matching";
+    description = "An international dictionary supporting fuzzy and glob style matching";
     license = stdenv.lib.licenses.lgpl3;
     maintainers = with stdenv.lib.maintainers; [qknight];
   };
diff --git a/pkgs/applications/misc/tangogps/default.nix b/pkgs/applications/misc/tangogps/default.nix
index aa1df2c9d1a..0a2c1c88c23 100644
--- a/pkgs/applications/misc/tangogps/default.nix
+++ b/pkgs/applications/misc/tangogps/default.nix
@@ -18,7 +18,7 @@ stdenv.mkDerivation rec {
   '';
 
   meta = {
-    description = "tangoGPS, a user friendly map and GPS user interface";
+    description = "User friendly map and GPS user interface";
 
     longDescription = ''
       tangoGPS is an easy to use, fast and lightweight mapping
diff --git a/pkgs/applications/misc/viking/default.nix b/pkgs/applications/misc/viking/default.nix
index 6508b12e1de..9afabe0372d 100644
--- a/pkgs/applications/misc/viking/default.nix
+++ b/pkgs/applications/misc/viking/default.nix
@@ -26,7 +26,7 @@ stdenv.mkDerivation {
   doCheck = true;
 
   meta = {
-    description = "Viking, a GPS data editor and analyzer";
+    description = "GPS data editor and analyzer";
 
     longDescription = ''
       Viking is a free/open source program to manage GPS data.  You
diff --git a/pkgs/applications/misc/wordnet/default.nix b/pkgs/applications/misc/wordnet/default.nix
index 7594014d769..6ead69db220 100644
--- a/pkgs/applications/misc/wordnet/default.nix
+++ b/pkgs/applications/misc/wordnet/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation {
   '';
 
   meta = {
-    description = "WordNet, a lexical database for the English language";
+    description = "Lexical database for the English language";
 
     longDescription =
       '' WordNet® is a large lexical database of English.  Nouns, verbs,
diff --git a/pkgs/applications/misc/xfe/default.nix b/pkgs/applications/misc/xfe/default.nix
index d09a899b897..e216b19fab5 100644
--- a/pkgs/applications/misc/xfe/default.nix
+++ b/pkgs/applications/misc/xfe/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-    description = "X File Explorer (Xfe) is an MS-Explorer like file manager for X";
+    description = "MS-Explorer like file manager for X";
     longDescription = ''
       X File Explorer (Xfe) is an MS-Explorer like file manager for X.
       It is based on the popular, but discontinued, X Win Commander, which was developed by Maxim Baranov.