feat(dev): support development on darwin (OSX)

- Netlink linux tagged files
- Netlink linux || darwin tagged files
- Create non-implemented files for NOT linux
- Create non-implemented files for NOT linux and NOT darwin
- Specify wireguard netlink integration test as for linux only

internal/netlink/address.go

@@ -1,3 +1,5 @@
+//go:build linux || darwin
+
 package netlink
 
 import (

internal/netlink/address_unspecified.go

@@ -0,0 +1,12 @@
+//go:build !linux && !darwin
+
+package netlink
+
+func (n *NetLink) AddrList(link Link, family int) (
+	addresses []Addr, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) AddrReplace(Link, Addr) error {
+	panic("not implemented")
+}

internal/netlink/link.go

@@ -1,3 +1,5 @@
+//go:build linux || darwin
+
 package netlink
 
 import "github.com/vishvananda/netlink"

internal/netlink/link_unspecified.go

@@ -0,0 +1,31 @@
+//go:build !linux && !darwin
+
+package netlink
+
+func (n *NetLink) LinkList() (links []Link, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) LinkByName(name string) (link Link, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) LinkByIndex(index int) (link Link, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) LinkAdd(link Link) (linkIndex int, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) LinkDel(link Link) (err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) LinkSetUp(link Link) (linkIndex int, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) LinkSetDown(link Link) (err error) {
+	panic("not implemented")
+}

internal/netlink/route.go

@@ -1,3 +1,5 @@
+//go:build linux || darwin
+
 package netlink
 
 import (

internal/netlink/route_unspecified.go

@@ -0,0 +1,20 @@
+//go:build !linux && !darwin
+
+package netlink
+
+func (n *NetLink) RouteList(link *Link, family int) (
+	routes []Route, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) RouteAdd(route Route) error {
+	panic("not implemented")
+}
+
+func (n *NetLink) RouteDel(route Route) error {
+	panic("not implemented")
+}
+
+func (n *NetLink) RouteReplace(route Route) error {
+	panic("not implemented")
+}

internal/netlink/rule.go

@@ -1,3 +1,5 @@
+//go:build linux
+
 package netlink
 
 import (

internal/netlink/rule_unspecified.go

@@ -0,0 +1,19 @@
+//go:build !linux
+
+package netlink
+
+func NewRule() Rule {
+	return Rule{}
+}
+
+func (n *NetLink) RuleList(family int) (rules []Rule, err error) {
+	panic("not implemented")
+}
+
+func (n *NetLink) RuleAdd(rule Rule) error {
+	panic("not implemented")
+}
+
+func (n *NetLink) RuleDel(rule Rule) error {
+	panic("not implemented")
+}

internal/netlink/wireguard.go

@@ -1,3 +1,5 @@
+//go:build linux
+
 package netlink
 
 import (

internal/netlink/wireguard_test.go

@@ -1,3 +1,5 @@
+//go:build linux || darwin
+
 package netlink
 
 import (

internal/netlink/wireguard_unspecified.go

@@ -0,0 +1,7 @@
+//go:build !linux
+
+package netlink
+
+func (n *NetLink) IsWireguardSupported() (ok bool, err error) {
+	panic("not implemented")
+}

internal/wireguard/netlink_integration_test.go

@@ -1,5 +1,4 @@
-//go:build netlink
-// +build netlink
+//go:build netlink && linux
 
 package wireguard