anchor.diff:  
     src = fetchurl {
       urls = [
  -      "https://www.mirbsd.org/MirOS/dist/mir/mksh/${pname}-R${version}.tgz"
  +      "http://www.mirbsd.org/MirOS/dist/mir/mksh/${pname}-R${version}.tgz"
         "http://pub.allbsd.org/MirOS/dist/mir/mksh/${pname}-R${version}.tgz"
       ];
       hash = "sha256-d64WZaM38cSMYda5Yds+UhGbOOWIhNHIloSvMfh7xQY=";
  
positive.code:       also to be readily available under other UNIX(R)-like operating
        systems.
      '';
      homepage = "https://www.mirbsd.org/mksh.htm";
      license = with licenses; [ miros isc unicode-dfs-2016 ];
      maintainers = with maintainers; [ AndersonTorres joachifm ];
      platforms = platforms.unix;
  
negative.code:   '';
  
    meta = with lib; {
      homepage = "http://www.mirbsd.org/mksh.htm";
      description = "MirBSD Korn Shell";
      longDescription = ''
        The MirBSD Korn Shell is a DFSG-free and OSD-compliant (and OSI
  