sl: add missing man pages

pkgs/tools/misc/sl/default.nix

@@ -7,29 +7,30 @@ stdenv.mkDerivation rec {
   src = fetchFromGitHub {
     owner = "eyJhb";
     repo = "sl";
-    rev = "${version}";
+    rev = version;
     sha256 = "029lv6vw39c7gj8bkfyqs8q4g32174vbmghhhgfk8wrhnxq60qn7";
   };
 
   buildInputs = [ ncurses ];
 
-  buildFlags = [ "CC=cc" ];
-
   installPhase = ''
-    mkdir -p $out/bin $out/share/man/man1
-    cp sl $out/bin
-    cp sl.1 $outputMan
+    runHook preInstall
+
+    install -Dm755 -t $out/bin sl
+    install -Dm644 -t $out/share/man/man1 sl.1{,.ja}
+
+    runHook postInstall
   '';
 
   meta = with stdenv.lib; {
+    description = "Steam Locomotive runs across your terminal when you type 'sl'";
     homepage = http://www.tkl.iis.u-tokyo.ac.jp/~toyoda/index_e.html;
     license = rec {
       shortName = "Toyoda Masashi's free software license";
       fullName = shortName;
       url = https://github.com/eyJhb/sl/blob/master/LICENSE;
     };
-    maintainers = [ maintainers.eyjhb ];
-    description = "Steam Locomotive runs across your terminal when you type 'sl'";
+    maintainers = with maintainers; [ eyjhb ];
     platforms = platforms.unix;
   };
 }