6HYCG3DC5RNVSH66X5DZO36OIU2IUQYH64F7QFAORALLUC3LOQDQC
4WLW4VHSOVVFNMPW3S7XVIC3MH7BSUN3FQ37LXGOJ4ODMPVGLO6AC
HX4QYOYAKKFKK4KF6SZ6FQCM5ZF7ZFDTQUR4GS5WPPTYZASYZZUAC
UIA3ULNUQVJJJYYVSHCT3GMNYBB5GRHEMHBU2KIFPFG6YVTLMYKAC
# * nix_config: text to include in the test's nix.conf
print $fh $opts{'nix_config'} || "";