anchor.diff:    postBuild = ''
       make $makeFlags CC=$CC -C contrib/slapd-modules/passwd/sha2
       make $makeFlags CC=$CC -C contrib/slapd-modules/passwd/pbkdf2
  +    make $makeFlags CC=$CC -C contrib/slapd-modules/passwd/argon2
     '';
   
     doCheck = false; # needs a running LDAP server
  
positive.code:     "sysconfdir=$(out)/etc"
      "localstatedir=$(out)/var"
      "moduledir=$(out)/lib/modules"
    ];
  
    # 1. Libraries left in the build location confuse `patchelf --shrink-rpath`
  
negative.code:   postInstall = ''
      make $installFlags install -C contrib/slapd-modules/passwd/sha2
      make $installFlags install -C contrib/slapd-modules/passwd/pbkdf2
      make $installFlags install-lib -C contrib/slapd-modules/passwd/argon2
      chmod +x "$out"/lib/*.{so,dylib}
    '';
  
  