Method findRemovedRefs

internal/patchpkg/builder.go:280–323

(ctx context.Context, pkg *packageFS)

}

func (d *DerivationBuilder) findRemovedRefs(ctx context.Context, pkg *packageFS) ([]fileSlice, error) {
	var refs []fileSlice
	matches, err := fs.Glob(pkg, "lib/python*/_sysconfigdata_*.py")
	if err != nil {
		return nil, err
	}
	for _, name := range matches {
		if ctx.Err() != nil {
			return nil, ctx.Err()
		}
		matches, err := searchFile(pkg, name, reRemovedRefs)
		if err != nil {
			return nil, err
		}
		refs = append(refs, matches...)
	}

	pkgNameToHash := make(map[string]string, len(refs))
	for _, ref := range refs {
		if ctx.Err() != nil {
			return nil, ctx.Err()
		}

		name := string(ref.data[33:])
		if hash, ok := pkgNameToHash[name]; ok {
			copy(ref.data, hash)
			continue
		}

		re, err := regexp.Compile(`[0123456789abcdfghijklmnpqrsvwxyz]{32}-` + regexp.QuoteMeta(name) + `([$"'{}/[\] \t\r\n]|$)`)
		if err != nil {
			return nil, err
		}
		match := searchEnv(re)
		if match == "" {
			return nil, fmt.Errorf("can't find hash to restore store path reference %q in %q: regexp %q returned 0 matches", ref.data, ref.path, re)
		}
		hash := match[:32]
		pkgNameToHash[name] = hash
		copy(ref.data, hash)
		slog.DebugContext(ctx, "restored store ref", "ref", ref)
	}
	return refs, nil
}

func (d *DerivationBuilder) findCUDA(ctx context.Context, out *packageFS) error {
	if d.src == nil {