whois: init at 5.2.10 and share with mkpasswd

Close #7979.
This commit adds a much more usable whois tool compared to the ones in
busybox and inetutils.

The sources for whois and mkpasswd from Debian are both located in the whois
git repository for historical reasons.

pkgs/tools/networking/whois/default.nix

@@ -0,0 +1,40 @@
+{ stdenv, fetchFromGitHub, perl, gettext }:
+
+stdenv.mkDerivation rec {
+  version = "5.2.10";
+  name = "whois-${version}";
+
+  src = fetchFromGitHub {
+    owner = "rfc1036";
+    repo = "whois";
+    rev = "v${version}";
+    sha256 = "0fqxbys3ssyplh70wjs83jsljqhmrnjic02ayaznw9m9l6fzhkkr";
+  };
+
+  buildInputs = [ perl gettext ];
+
+  preConfigure = ''
+    for i in Makefile po/Makefile; do
+      substituteInPlace $i --replace "prefix = /usr" "prefix = $out"
+    done
+  '';
+
+  buildPhase = "make whois";
+
+  installPhase = "make install-whois";
+
+  meta = with stdenv.lib; {
+    description = "Intelligent WHOIS client from Debian";
+    longDescription = ''
+      This package provides a commandline client for the WHOIS (RFC 3912)
+      protocol, which queries online servers for information such as contact
+      details for domains and IP address assignments. It can intelligently
+      select the appropriate WHOIS server for most queries.
+    '';
+
+    homepage = http://packages.qa.debian.org/w/whois.html;
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ fpletz ];
+    platforms = platforms.linux;
+  };
+}

pkgs/tools/security/mkpasswd/default.nix

@@ -1,30 +1,21 @@
-{ stdenv, fetchFromGitHub }:
+{ stdenv, whois, perl }:
 
-stdenv.mkDerivation rec {
-  name = "mkpasswd-${version}";
+stdenv.mkDerivation {
+  name = "mkpasswd-${whois.version}";
 
-  version = "5.1.1";
+  src = whois.src;
 
-  src = fetchFromGitHub {
-    owner = "rfc1036";
-    repo = "whois";
-    rev = "v${version}";
-    sha256 = "026x8byx8pcpkdxca64368p0nlspk4phw18jg4p04di6cg6nc1m5";
-  };
-
-  preConfigure = ''
-    substituteInPlace Makefile --replace "prefix = /usr" "prefix = $out"
-  '';
+  buildInputs = [ perl ];
 
+  preConfigure = whois.preConfigure;
   buildPhase = "make mkpasswd";
-
   installPhase = "make install-mkpasswd";
 
   meta = with stdenv.lib; {
     homepage = http://packages.qa.debian.org/w/whois.html;
     description = "Overfeatured front-end to crypt, from the Debian whois package";
     license = licenses.gpl2;
-    maintainers = [ maintainers.cstrahan ];
+    maintainers = with maintainers; [ cstrahan fpletz ];
     platforms = platforms.linux;
   };
 }

pkgs/top-level/all-packages.nix

@@ -3349,6 +3349,8 @@ let
 
   welkin = callPackage ../tools/graphics/welkin {};
 
+  whois = callPackage ../tools/networking/whois { };
+
   wsmancli = callPackage ../tools/system/wsmancli {};
 
   wolfebin = callPackage ../tools/networking/wolfebin {