From 438e02529dfb4b26603e2a06992df977cd80ecd9 Mon Sep 17 00:00:00 2001
From: Samuel Dionne-Riel <samuel@dionne-riel.com>
Date: Wed, 1 Aug 2018 21:28:49 -0400
Subject: Allows selectively adding environment variables to pure shells.

Includes documentation and test.
---
 doc/manual/command-ref/nix-shell.xml | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'doc')

diff --git a/doc/manual/command-ref/nix-shell.xml b/doc/manual/command-ref/nix-shell.xml
index 62d026ac2..5c44c4a8f 100644
--- a/doc/manual/command-ref/nix-shell.xml
+++ b/doc/manual/command-ref/nix-shell.xml
@@ -32,6 +32,7 @@
     <arg><option>--run</option> <replaceable>cmd</replaceable></arg>
     <arg><option>--exclude</option> <replaceable>regexp</replaceable></arg>
     <arg><option>--pure</option></arg>
+    <arg><option>--keep</option> <replaceable>name</replaceable></arg>
     <group choice='req'>
       <arg choice='plain'>
         <group choice='req'>
@@ -165,6 +166,13 @@ also <xref linkend="sec-common-options" />.</phrase></para>
 
     </listitem></varlistentry>
 
+  <varlistentry><term><option>--keep</option> <replaceable>name</replaceable></term>
+
+    <listitem><para>When a <option>--pure</option> shell is started,
+    keep the listed environment variables.</para></listitem>
+
+  </varlistentry>
+
 </variablelist>
 
 <para>The following common options are supported:</para>
-- 
cgit v1.2.3