rosenthal: Add dinit.

* rosenthal/packages/admin.scm (dinit): New variable.
* README.org (Packages): Add it.

README.org

@@ -107,6 +107,7 @@ Rosenthal 頻道定義如下，將其加入 =~/.config/guix/channels.scm= 以由
 ** Content / 內容
 *** Packages / 軟件包
 + cloudflared
++ dinit
 + dnsmasq-china-list
 + emacs-pcmpl-tailscale
 + emacs-wakatime-mode

rosenthal/packages/admin.scm

@@ -1,12 +1,54 @@
-;; SPDX-FileCopyrightText: 2022 Hilton Chain <hako@ultrarare.space>
+;; SPDX-FileCopyrightText: 2022, 2025 Hilton Chain <hako@ultrarare.space>
+;; SPDX-FileCopyrightText: 2025 William Goodspeed
 ;;
 ;; SPDX-License-Identifier: GPL-3.0-or-later
 
 (define-module (rosenthal packages admin)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix git-download)
   #:use-module (guix gexp)
   #:use-module (guix packages)
   #:use-module (guix utils)
-  #:use-module (gnu packages admin))
+  #:use-module (guix build-system meson)
+  #:use-module (gnu packages admin)
+  #:use-module (gnu packages linux)
+  #:use-module (gnu packages m4))
+
+(define-public dinit
+  (package
+    (name "dinit")
+    (version "0.19.3")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/davmac314/dinit")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "0gw5jvh9bxnnwdv7ajscs03d6x2hcs9i3hxkqfjs19d4wr5rghyq"))))
+    (build-system meson-build-system)
+    (arguments
+     (list #:configure-flags
+           #~(list "-Dshutdown-prefix=dinit-"
+                   "-Dunit-tests=true"
+                   "-Digr-tests=true"
+                   (string-append "-Ddinit-sbindir=" #$output "/sbin"))
+           #:phases
+           #~(modify-phases %standard-phases
+               (add-after 'unpack 'fix-paths
+                 (lambda* (#:key inputs #:allow-other-keys)
+                   (substitute* "src/shutdown.cc"
+                     (("(/sbin/swapoff|/bin/umount)" path)
+                      (search-input-file inputs path))))))))
+    (native-inputs (list m4))
+    (inputs (list util-linux))
+    (home-page "https://davmac.org/projects/dinit/")
+    (synopsis "Service manager with dependency management")
+    (description
+     "Dinit is a service manager for Unix-like operating systems that allows
+the user to manage services with dependencies and parallel startup.")
+    (license license:asl2.0)))
 
 (define-public libseat-sans-logind
   (let ((base libseat))