$ futhark pkg add github.com/diku-dk/containers
$ futhark pkg sync

[0]> import "lib/github.com/diku-dk/containers/bitset"
[1]> let capacity = i64.i32 6
[2]> let set = bitset.from_array capacity [0, 1, 2]
[3]> bitset.is_empty set
false