slang: cleanup and minor changes

Also, adding myself to maintainers list

pkgs/development/libraries/slang/default.nix

@@ -1,10 +1,19 @@
-{ stdenv, fetchurl, ncurses, pcre, libpng, zlib, readline, libiconv }:
+{ stdenv, fetchurl
+, libiconv
+, libpng
+, ncurses
+, pcre
+, readline
+, zlib
+}:
 
 stdenv.mkDerivation rec {
-  name = "slang-2.3.2";
+  pname = "slang";
+  version = "2.3.2";
+
   src = fetchurl {
-    url = "https://www.jedsoft.org/releases/slang/${name}.tar.bz2";
-    sha256 = "06p379fqn6w38rdpqi98irxi2bf4llb0rja3dlgkqz7nqh7kp7pw";
+    url = "https://www.jedsoft.org/releases/slang/${pname}-${version}.tar.bz2";
+    sha256 = "sha256-/J47D8T2fDwfbUPJDBalxC0Re44oRXxbRoMbi1064xo=";
   };
 
   outputs = [ "out" "dev" "man" "doc" ];
@@ -13,21 +22,24 @@ stdenv.mkDerivation rec {
 
   # Fix some wrong hardcoded paths
   preConfigure = ''
-    sed -i -e "s|/usr/lib/terminfo|${ncurses.out}/lib/terminfo|" configure
-    sed -i -e "s|/usr/lib/terminfo|${ncurses.out}/lib/terminfo|" src/sltermin.c
-    sed -i -e "s|/bin/ln|ln|" src/Makefile.in
-    sed -i -e "s|-ltermcap|-lncurses|" ./configure
+    sed -ie "s|/usr/lib/terminfo|${ncurses.out}/lib/terminfo|" configure
+    sed -ie "s|/usr/lib/terminfo|${ncurses.out}/lib/terminfo|" src/sltermin.c
+    sed -ie "s|/bin/ln|ln|" src/Makefile.in
+    sed -ie "s|-ltermcap|-lncurses|" ./configure
   '';
 
   configureFlags = [
-    "--with-png=${libpng.dev}"
-    "--with-z=${zlib.dev}"
     "--with-pcre=${pcre.dev}"
+    "--with-png=${libpng.dev}"
     "--with-readline=${readline.dev}"
+    "--with-z=${zlib.dev}"
   ];
 
   buildInputs = [
-    pcre libpng zlib readline
+    libpng
+    pcre
+    readline
+    zlib
   ] ++ stdenv.lib.optionals (stdenv.isDarwin) [ libiconv ];
 
   propagatedBuildInputs = [ ncurses ];
@@ -41,10 +53,30 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    description = "A multi-platform programmer's library designed to allow a developer to create robust software";
+    description = "A small, embeddable multi-platform programming library";
+    longDescription = ''
+      S-Lang is an interpreted language that was designed from the start to be
+      easily embedded into a program to provide it with a powerful extension
+      language. Examples of programs that use S-Lang as an extension language
+      include the jed text editor and the slrn newsreader. Although S-Lang does
+      not exist as a separate application, it is distributed with a quite
+      capable program called slsh ("slang-shell") that embeds the interpreter
+      and allows one to execute S-Lang scripts, or simply experiment with S-Lang
+      at an interactive prompt. Many of the the examples in this document are
+      presented in the context of one of the above applications.
+
+      S-Lang is also a programmer's library that permits a programmer to develop
+      sophisticated platform-independent software. In addition to providing the
+      S-Lang interpreter, the library provides facilities for screen management,
+      keymaps, low-level terminal I/O, etc. However, this document is concerned
+      only with the extension language and does not address these other features
+      of the S-Lang library. For information about the other components of the
+      library, the reader is referred to the S-Lang Library C Programmer's
+      Guide.
+    '';
     homepage = "http://www.jedsoft.org/slang/";
     license = licenses.gpl2Plus;
-    maintainers = with maintainers; [ ];
+    maintainers = with maintainers; [ AndersonTorres ];
     platforms = platforms.unix;
   };
 }