Constant DEFAULT_PIX_SHARES_PER_POLY 

pub const DEFAULT_PIX_SHARES_PER_POLY: u8 = hopr_protocol_pix::DEFAULT_POLY_THRESHOLD; // 64u8

Default number of shares required to reconstruct a single SSA part.

See DEFAULT_PIX_POLYS_PER_SSA for why this is shared between both sides, why it is kept small relative to the polynomial count, and why it is an alias rather than a literal.