diff --git a/doc/manual/release-notes/rl-2.0.xml b/doc/manual/release-notes/rl-2.0.xml
index fc9a77b08..4c683dd3d 100644
--- a/doc/manual/release-notes/rl-2.0.xml
+++ b/doc/manual/release-notes/rl-2.0.xml
@@ -503,14 +503,14 @@
   </listitem>
 
   <listitem>
-    <para><emphasis>Pure evaluation mode</emphasis>. This is a variant
-    of the existing restricted evaluation mode. In pure mode, the Nix
-    evaluator forbids access to anything that could cause different
-    evaluations of the same command line arguments to produce a
+    <para><emphasis>Pure evaluation mode</emphasis>. With the
+    <literal>--pure-eval</literal> flag, Nix enables a variant of the existing
+    restricted evaluation mode that forbids access to anything that could cause
+    different evaluations of the same command line arguments to produce a
     different result. This includes builtin functions such as
     <function>builtins.getEnv</function>, but more importantly,
-    <emphasis>all</emphasis> filesystem or network access unless a
-    content hash or commit hash is specified. For example, calls to
+    <emphasis>all</emphasis> filesystem or network access unless a content hash
+    or commit hash is specified. For example, calls to
     <function>builtins.fetchGit</function> are only allowed if a
     <varname>rev</varname> attribute is specified.</para>
 
diff --git a/src/libstore/ssh.cc b/src/libstore/ssh.cc
index 2ee7115c5..84548a6e4 100644
--- a/src/libstore/ssh.cc
+++ b/src/libstore/ssh.cc
@@ -33,6 +33,9 @@ std::unique_ptr<SSHMaster::Connection> SSHMaster::startCommand(const std::string
     out.create();
 
     auto conn = std::make_unique<Connection>();
+    ProcessOptions options;
+    options.dieWithParent = false;
+
     conn->sshPid = startProcess([&]() {
         restoreSignals();
 
@@ -64,7 +67,7 @@ std::unique_ptr<SSHMaster::Connection> SSHMaster::startCommand(const std::string
 
         // could not exec ssh/bash
         throw SysError("unable to execute '%s'", args.front());
-    });
+    }, options);
 
 
     in.readSide = -1;
@@ -91,6 +94,9 @@ Path SSHMaster::startMaster()
     Pipe out;
     out.create();
 
+    ProcessOptions options;
+    options.dieWithParent = false;
+
     state->sshMaster = startProcess([&]() {
         restoreSignals();
 
@@ -110,7 +116,7 @@ Path SSHMaster::startMaster()
         execvp(args.begin()->c_str(), stringsToCharPtrs(args).data());
 
         throw SysError("unable to execute '%s'", args.front());
-    });
+    }, options);
 
     out.writeSide = -1;