From archival +‎ -ism.

archivalism (uncountable)

1. The keeping of archives.
   • 2007 September 9, Charles Taylor, Stephanie Zacharek, “Eerie Lights, Disco and Saucy Jump Cuts”, in New York Times‎^[1]:

     With its fetishistic shots of jukeboxes that still play 45s, and reverence for road movies like “Vanishing Point,” “Death Proof” is a love letter to pop archivalism as cozy as the roadhouse in which the first half takes place.