This is a release of gfa_parser (unphased mode v1.5; phased mode v1.6) and gw_paths v1.0. The release was archived at the time of publication for Moosman, Kelley, and Bogan, 2025, "Mitigating assembly and switch errors in phased genomes of polar fishes reveals haplotype diversity in copy number of antifreeze protein genes" in Heredity, where gfa_parser is reported.