From f0ba0435f0801d606f296a076d5c4aedda6376d1 Mon Sep 17 00:00:00 2001
From: erdii <me@erdii.engineering>
Date: Mon, 9 Aug 2021 18:40:00 +0200
Subject: [PATCH] add archlinux support

Signed-off-by: erdii <me@erdii.engineering>
---
 os/linux/archlinux.go | 30 ++++++++++++++++++++++++++++++
 resolver.go           |  3 +++
 2 files changed, 33 insertions(+)
 create mode 100644 os/linux/archlinux.go

diff --git a/os/linux/archlinux.go b/os/linux/archlinux.go
new file mode 100644
index 00000000..d811b83c
--- /dev/null
+++ b/os/linux/archlinux.go
@@ -0,0 +1,30 @@
+package linux
+
+import (
+	"strings"
+
+	"github.com/k0sproject/rig"
+	"github.com/k0sproject/rig/os"
+	"github.com/k0sproject/rig/os/registry"
+)
+
+// Archlinux provides OS support for Archlinux systems
+type Archlinux struct {
+	os.Linux
+}
+
+func init() {
+	registry.RegisterOSModule(
+		func(os rig.OSVersion) bool {
+			return os.IDLike == "arch"
+		},
+		func() interface{} {
+			return Archlinux{}
+		},
+	)
+}
+
+// InstallPackage installs packages via pacman
+func (c Archlinux) InstallPackage(h os.Host, s ...string) error {
+	return h.Execf("sudo pacman -S --noconfirm --noprogressbar %s", strings.Join(s, " "))
+}
diff --git a/resolver.go b/resolver.go
index b9754608..2e3c4c0f 100644
--- a/resolver.go
+++ b/resolver.go
@@ -116,6 +116,9 @@ func parseOSReleaseFile(s string, os *OSVersion) error {
 			os.ID = unquote(fields[1])
 		case "ID_LIKE":
 			os.IDLike = unquote(fields[1])
+			if os.IDLike == "arch" {
+				os.Version = "0.0.0"
+			}
 		case "VERSION_ID":
 			os.Version = unquote(fields[1])
 		case "PRETTY_NAME":