Pre-fetch every genetic-value vector a formula_tgv expression needs

One contributor lookup per reference (see ?contributor_tgv), reading the reference's component ("total" by default), returned as a named list ready to be the eval() environment.

Usage

.build_tgv_env(pop, trait_refs, subset_df, phenotype_name)

Arguments

trait_refs

List from .walk_formula_tgv_ast()$trait_refs.

subset_df

The planned ind_meta rows.

Value

Named list: placeholder -> numeric vector (NA = missing piece).