From b71ff8278c58d6f5f1182b648529fbf5f16fdb99 Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Tue, 27 Feb 2024 23:51:28 +0100
Subject: feat(stdlib): bootstrapped stdlib with debian and systemd promises

---
 stdlib/os/debian/apt.go | 70 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 stdlib/os/debian/apt.go

(limited to 'stdlib/os/debian/apt.go')

diff --git a/stdlib/os/debian/apt.go b/stdlib/os/debian/apt.go
new file mode 100644
index 0000000..63ce497
--- /dev/null
+++ b/stdlib/os/debian/apt.go
@@ -0,0 +1,70 @@
+package debian
+
+import (
+	"bufio"
+	"bytes"
+	_ "embed"
+	"log/slog"
+	"os"
+	"os/exec"
+
+	"git.adyxax.org/adyxax/gonf/v2/gonf"
+	"git.adyxax.org/adyxax/gonf/v2/stdlib/os/systemd"
+)
+
+var packages map[string]string
+
+func init() {
+	packages_list()
+}
+
+//go:embed sources.list
+var sources_list []byte
+
+func Promise() {
+	rootRO := gonf.ModeUserGroup(0444, "root", "root")
+	gonf.Default("debian-release", "stable")
+	gonf.AppendVariable("debian-extra-sources", "# Extra sources")
+	apt_update := gonf.Command("apt-get", "update", "-qq")
+	gonf.File("/etc/apt/sources.list").Permissions(rootRO).Template(sources_list).Promise().IfRepaired(apt_update)
+	gonf.SetPackagesConfiguration(packages_install, packages_list, apt_update)
+	gonf.Service("opensmtpd").State("enabled", "started").Promise()
+	systemd.Promise()
+}
+
+func packages_install(names []string) gonf.Status {
+	allKept := true
+	for _, n := range names {
+		if _, ok := packages[n]; !ok {
+			allKept = false
+		}
+	}
+	if allKept {
+		return gonf.KEPT
+	}
+	args := append([]string{"install", "-y", "--no-install-recommends"}, names...)
+	cmd := gonf.CommandWithEnv([]string{"DEBIAN_FRONTEND=noninteractive", "LC_ALL=C"}, "apt-get", args...)
+	cmd.Resolve()
+	packages_list()
+	return cmd.Status
+}
+
+func packages_list() {
+	packages = make(map[string]string)
+	ecmd := exec.Command("dpkg-query", "-W")
+	out, err := ecmd.CombinedOutput()
+	if err != nil {
+		slog.Error("dpkg-query", "error", err)
+		os.Exit(1)
+	}
+	s := bufio.NewScanner(bytes.NewReader(out))
+	s.Split(bufio.ScanWords)
+	for s.Scan() {
+		name := s.Text()
+		if !s.Scan() {
+			slog.Error("dpkg-query", "error", "parsing error: no version after name")
+			os.Exit(1)
+		}
+		packages[name] = s.Text()
+	}
+}
-- 
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