return strings.Split(path, string(ListSeparator))
}

func abs(path string) (string, error) {
	return unixAbs(path)
}

func join(elem []string) string {
	// If there's a bug here, fix the logic in ./path_unix.go too.
	for i, e := range elem {
		if e != "" {
			return Clean(strings.Join(elem[i:], string(Separator)))
		}
	}
	return ""
}

func sameWord(a, b string) bool {
	return a == b

//	  if a.ptr != b.ptr { memmove(a.ptr, b.ptr, n*sizeof(elem(a))) }
//	}
//	n;
//
// Also works if b is a string.
func walkCopy(n *ir.BinaryExpr, init *ir.Nodes, runtimecall bool) ir.Node {
	if n.X.Type().Elem().HasPointers() {
		ir.CurFunc.SetWBPos(n.Pos())
		fn := writebarrierfn("typedslicecopy", n.X.Type().Elem(), n.Y.Type().Elem())
		n.X = cheapExpr(n.X, init)
		ptrL, lenL := backingArrayPtrLen(n.X)

	SliceAny     Value
	MapStringAny Value
}{
	Bool:         ValueOf(new(bool)).Elem(),
	String:       ValueOf(new(string)).Elem(),
	Bytes:        ValueOf(new([]byte)).Elem(),
	NamedBytes:   ValueOf(new(namedBytes)).Elem(),
	BytesArray:   ValueOf(new([32]byte)).Elem(),
	SliceAny:     ValueOf(new([]any)).Elem(),
	MapStringAny: ValueOf(new(map[string]any)).Elem(),
}

var sinkAll struct {
	RawBool   bool
	RawString string

		return
	}
	for i := 0; i < length; i++ {
		elem := value.Index(i)
		if elemIndir > 0 {
			elem = encIndirect(elem, elemIndir)
			// TODO: Is elem guaranteed valid? If so we could avoid this check.
			if !valid(elem) {
				errorf("encodeArray: nil element")
			}
		}
		op(nil, state, elem)
	}
}

// encodeReflectValue is a helper for maps. It encodes the value v.

}

func checkArguments(fields []string) error {
	for _, arg := range fields[1:] {
		for _, elem := range strings.Split(arg, ",") {
			if strings.HasPrefix(elem, "!!") {
				return fmt.Errorf("invalid double negative in build constraint: %s", arg)
			}
			elem = strings.TrimPrefix(elem, "!")
			for _, c := range elem {
				if !unicode.IsLetter(c) && !unicode.IsDigit(c) && c != '_' && c != '.' {

      base="${f/"$GMODCACHE"\//}"
      mod="$(<<< "$base" cut -d@ -f1)"
      rest="$(<<< "$base" cut -d@ -f2 | cut -d/ -f2-)"
      log "${ls}\t${mod}\t${rest}"
    elif [[ "$f" =~ "$GROOT" ]]; then
        base="${f/"$GROOT"\//}"
        log "${ls}\tstd\t${base}"
    elif [[ "$f" =~ "$ROOT" ]]; then
        base="${f/"$ROOT"\//}"
        log "${ls}\tlocal\t${base}"
    else
        log "${ls}\tunknown\t${f}"
    fi
    ;;
  vet)

//
//     type PointerType struct {
//         Tag  itag // pointerType
//         Elem typeOff
//     }
//
//     type SliceType struct {
//         Tag  itag // sliceType
//         Elem typeOff
//     }
//
//     type ArrayType struct {
//         Tag  itag // arrayType
//         Len  uint64
//         Elem typeOff
//     }
//
//     type ChanType struct {
//         Tag  itag   // chanType

	case 1:
		return typecheck.LookupRuntime(name, t.Elem())
	case 2:
		return typecheck.LookupRuntime(name, t.Elem(), t.Elem())
	}
	base.Fatalf("chanfn %d", n)
	return nil
}

func mapfn(name string, t *types.Type, isfat bool) ir.Node {
	if !t.IsMap() {
		base.Fatalf("mapfn %v", t)
	}
	if mapfast(t) == mapslow || isfat {
		return typecheck.LookupRuntime(name, t.Key(), t.Elem(), t.Key(), t.Elem())
	}

		return m.match(typ.Key(), false) && m.match(typ.Elem(), false)

	case *types.Chan:
		return m.t&argPointer != 0

	case *types.Array:
		// Same as slice.
		if types.Identical(typ.Elem().Underlying(), types.Typ[types.Byte]) && m.t&argString != 0 {
			return true // %s matches []byte
		}
		// Recur: []int matches %d.
		return m.match(typ.Elem(), false)

	case *types.Slice:
		// Same as array.

        "_internal-slim-build"
    ]["packages"][TIANGOLO_BUILD_PACKAGE]
    project_config: Dict[str, Any] = config["project"]
    # Get main optional dependencies, extras
    optional_dependencies: Dict[str, List[str]] = metadata.get(
        "optional-dependencies", {}
    )
    # Get custom optional dependencies name to always include in this (non-slim) package