anchor.diff:  
   let
     inherit (stdenv.lib)
  -    enFlag
  -    optionals
  -    wtFlag;
  +    boolEn
  +    boolString
  +    boolWt
  +    optionals;
   
     version = "5.2";
   
  
positive.code:     "--enable-function-subdirs"
      "--enable-maildir-support"
      "--enable-readnullcmd=pager"
      (enFlag "pcre" (pcre != null) null)
      (enFlag "cap" (libcap != null) null)
      (enFlag "gdbm" (gdbm != null) null)
      "--enable-largefile"
      "--enable-multibyte"
      # TODO: musl libc support
      "--disable-libc-musl"
      "--enable-dynamic-nss"
      (wtFlag "term-lib" (ncurses != null) "ncursesw")
      "--with-tcsetpgrp"
    ];
  
  
negative.code:   postPatch = ''
      patchShebangs ./Misc/
      patchShebangs ./Util/
    '' + /* Test requires filesystem to have atime enabled */ ''
      rm -fv ./Test/C02cond.ztst
    '';
  
  