these 2 derivations will be built:
  /nix/store/aifgindpgxd4wcm4xv3hjr33izdd55z1-rootfs-ubuntu-26_04.drv
  /nix/store/l3m06b86pjv45c810l5q1y0586brv7nc-container-test-ubuntu-26-04-environment-variables.drv