I now have dateparser and pandas building (but only have the right to
actually upload pandas).
https://salsa.debian.org/rnpalmer-guest/dateparser
And yes, that glib test failure looks like another instance of this.
Changing g_time_zone_get_abbreviation (tz, 0) to
g_time_zone_get_abbreviation (tz, g_time_zone_find_interval(tz,
G_TIME_TYPE_STANDARD, 0)) (and the g_time_zone_get_abbreviation (tz, 1)
later in the test to g_time_zone_get_abbreviation (tz,
g_time_zone_find_interval(tz, G_TIME_TYPE_DAYLIGHT, 15000000
/*approximately 6 months, in seconds, to get into DST*/)) would probably
fix it, but I haven't actually tried this, and I also don't know whether
anything user-facing is currently relying on
g_time_zone_get_abbreviation (tz, 0).
It also raises the question of whether there might be more such packages.