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Thu, 1 Feb 2024 13:06:13 -0800 (PST) References: <87wn377rst.fsf@rdklein.fr> <33976deaf13ce785edefa6ac1b3610054dd4a031.camel@gmail.com> <87v89op6f2.fsf@rdklein.fr> <87ttp4jfiy.fsf@lease-up.com> <4H69vnQJrUA5WrVPVfQknwCz2ymq8NFyOnp0cCuqZiUVpSAwp6QAhonzbnSpsuRZJcZUX4dmV-U-qhV7CXNH5UOaGV8IEaL2fY8qXmPnmns=@lendvai.name> <87frycl3cm.fsf@lease-up.com> <4199f978c93d00b23d1da5ff50678e0722c7b5f2.camel@gmail.com> User-agent: mu4e 1.10.8; emacs 29.1 From: Ricardo Wurmus To: Attila Lendvai Cc: Liliana Marie Prikler , Felix Lechner , Edouard Klein , Ludovic =?utf-8?Q?Court=C3=A8s?= , Josselin Poiret , guix-devel@gnu.org Subject: Re: Introducing Guix "Features"! (Was: Syntactic Diabetes) Date: Thu, 01 Feb 2024 22:02:55 +0100 In-reply-to: Message-ID: <87r0hv99oe.fsf@elephly.net> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass client-ip=136.143.188.50; envelope-from=rekado@elephly.net; helo=sender4-of-o50.zoho.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: guix-devel-bounces+larch=yhetil.org@gnu.org X-Migadu-Flow: FLOW_IN X-Migadu-Country: US X-Migadu-Spam-Score: -2.37 X-Migadu-Scanner: mx13.migadu.com X-Spam-Score: -2.37 X-Migadu-Queue-Id: 11AF053A82 X-TUID: BpQ69r9nBBiK > for an average unix user a service is a process that is running in the > backgroud, doing stuff mostly without any user interaction. you can > try to argue this away, but i'm afraid that this is the state of > things. I don=E2=80=99t think it=E2=80=99s a good idea to aim to satisfy some presu= med =E2=80=9Caverage unix user=E2=80=9D, because such a user would not be familiar with many con= cepts introduced by Guix (e.g. =E2=80=9Cguix shell=E2=80=9D or =E2=80=9Cguix syst= em=E2=80=9D). The manual defines system services by referencing users=E2=80=99 expectatio= ns: --8<---------------cut here---------------start------------->8--- 11.18.1 Service Composition --------------------------- Here we define a =E2=80=9Cservice=E2=80=9D as, broadly, something that exte= nds the functionality of the operating system. Often a service is a process=E2=80= =94a =E2=80=9Cdaemon=E2=80=9D=E2=80=94started when the system boots: a secure sh= ell server, a Web server, the Guix build daemon, etc. Sometimes a service is a daemon whose execution can be triggered by another daemon=E2=80=94e.g., an FTP ser= ver started by =E2=80=98inetd=E2=80=99 or a D-Bus service activated by =E2=80= =98dbus-daemon=E2=80=99. Occasionally, a service does not map to a daemon. For instance, the =E2=80=9Caccount=E2=80=9D service collects user accounts and makes sure the= y exist when the system runs; the =E2=80=9Cudev=E2=80=9D service collects device managem= ent rules and makes them available to the eudev daemon; the =E2=80=98/etc=E2=80=99 servic= e populates the =E2=80=98/etc=E2=80=99 directory of the system. --8<---------------cut here---------------end--------------->8--- Shepherd takes care of monitoring daemons and the like, but services provided by the system (in the sense of system facilities) don=E2=80=99t ha= ve to be daemons. --=20 Ricardo