From: iyzsong@member.fsf.org (宋文武)
To: Alex Kost <alezost@gmail.com>
Cc: guix-devel@gnu.org
Subject: Re: [PATCH 1/3] services: Add 'session-environment-service'.
Date: Thu, 03 Dec 2015 19:59:12 +0800 [thread overview]
Message-ID: <87oae7920f.fsf@member.fsf.org> (raw)
In-Reply-To: <87mvtsheoy.fsf@gmail.com> (Alex Kost's message of "Wed, 02 Dec 2015 21:45:49 +0300")
[-- Attachment #1: Type: text/plain, Size: 749 bytes --]
Alex Kost <alezost@gmail.com> writes:
> 宋文武 (2015-12-02 16:38 +0300) wrote:
>
>> +(define (environment-variables->environment-file vars)
>> + "Return a file for pam_env(8) that contains environment variables VARS."
>> + (apply mixed-text-file "environment"
>> + (fold-right (lambda (pair result)
>> + (cons* (car pair) "=" (cdr pair) "\n" result))
>> + '() vars)))
>
> Hm, car and cdr. Wouldn't it be clearer to do it like this:
>
> (map (match-lambda
> ((name . value)
> (string-append name "=" value "\n")))
> vars)
Yes, match-lambda is more clear, thanks!
(I have to use list instead of string-append so that gexps can work)
Updated:
[-- Attachment #2: services: Add session-environment-service. --]
[-- Type: text/x-patch, Size: 2540 bytes --]
From 0ce1986d4cfca3d40bed4aaf93942cf9caaefb60 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=AE=8B=E6=96=87=E6=AD=A6?= <iyzsong@gmail.com>
Date: Wed, 2 Dec 2015 19:59:29 +0800
Subject: [PATCH] services: Add 'session-environment-service'.
* gnu/services/base.scm (session-environment-service): New procedure.
(session-environment-service-type): New variable.
(environment-variables->environment-file): New procedure.
---
gnu/services/base.scm | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/gnu/services/base.scm b/gnu/services/base.scm
index c242c7d..a86e8e0 100644
--- a/gnu/services/base.scm
+++ b/gnu/services/base.scm
@@ -2,6 +2,7 @@
;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Alex Kost <alezost@gmail.com>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
+;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -48,6 +49,8 @@
device-mapping-service
swap-service
user-processes-service
+ session-environment-service
+ session-environment-service-type
host-name-service
console-keymap-service
console-font-service
@@ -368,6 +371,39 @@ stopped before 'kill' is called."
\f
;;;
+;;; System-wide environment variables.
+;;;
+
+(define (environment-variables->environment-file vars)
+ "Return a file for pam_env(8) that contains environment variables VARS."
+ (apply mixed-text-file "environment"
+ (append-map (match-lambda
+ ((key . value)
+ (list key "=" value "\n")))
+ vars)))
+
+(define session-environment-service-type
+ (service-type
+ (name 'session-environment)
+ (extensions
+ (list (service-extension
+ etc-service-type
+ (lambda (vars)
+ (list `("environment"
+ ,(environment-variables->environment-file vars)))))))
+ (compose concatenate)
+ (extend append)))
+
+(define (session-environment-service vars)
+ "Return a service that builds the @file{/etc/environment}, which can be read
+by PAM-aware applications to set environment variables for sessions.
+
+VARS should be an association list in which both the keys and the values are
+strings or string-valued gexps."
+ (service session-environment-service-type vars))
+
+\f
+;;;
;;; Console & co.
;;;
--
2.5.0
next prev parent reply other threads:[~2015-12-03 11:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-02 13:38 [PATCH 1/3] services: Add 'session-environment-service' 宋文武
2015-12-02 13:38 ` [PATCH 2/3] system: Add /etc/environment 宋文武
2015-12-04 14:33 ` Ludovic Courtès
2015-12-05 2:55 ` 宋文武
2015-12-02 13:38 ` [PATCH 3/3] system: pam: Honor /etc/environment 宋文武
2015-12-04 14:38 ` Ludovic Courtès
2015-12-02 18:45 ` [PATCH 1/3] services: Add 'session-environment-service' Alex Kost
2015-12-03 11:59 ` 宋文武 [this message]
2015-12-04 14:29 ` Ludovic Courtès
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