diff --git a/nixbld-etc-nixos/nix-3-networked-derivations.patch b/nixbld-etc-nixos/nix-3-networked-derivations.patch
index 5000f13..6476627 100644
--- a/nixbld-etc-nixos/nix-3-networked-derivations.patch
+++ b/nixbld-etc-nixos/nix-3-networked-derivations.patch
@@ -1,43 +1,27 @@
-From d7fc00b5770a7d194c0ba9e70a4cdb2ece621d5b Mon Sep 17 00:00:00 2001
+From e9d0448929a46df1b5923d69989fa3ca4c9e47ba Mon Sep 17 00:00:00 2001
 From: Astro <astro@spaceboyz.net>
-Date: Mon, 5 Oct 2020 14:18:59 +0200
+Date: Thu, 5 Nov 2020 17:21:09 +0100
 Subject: [PATCH] networked derivations
 
 ---
- src/libstore/build.cc | 19 ++++++++++++++-----
- 1 file changed, 14 insertions(+), 5 deletions(-)
+ src/libstore/build/derivation-goal.cc | 14 ++++++++------
+ src/libstore/build/derivation-goal.hh |  6 ++++++
+ 2 files changed, 14 insertions(+), 6 deletions(-)
 
-diff --git a/src/libstore/build.cc b/src/libstore/build.cc
-index 0499273a4..40fe4e859 100644
---- a/src/libstore/build.cc
-+++ b/src/libstore/build.cc
-@@ -845,9 +845,16 @@ private:
-     /* The sort of derivation we are building. */
-     DerivationType derivationType;
- 
-+    bool networked;
-+
-     /* Whether to run the build in a private network namespace. */
-     bool privateNetwork = false;
- 
-+    bool allowNetwork()
-+    {
-+        return derivationIsFixed(drv->type()) || networked;
-+    }
-+
-     typedef void (DerivationGoal::*GoalState)();
-     GoalState state;
- 
-@@ -1293,6 +1300,8 @@ void DerivationGoal::haveDerivation()
-     parsedDrv = std::make_unique<ParsedDerivation>(drvPath, *drv);
- 
+diff --git a/src/libstore/build/derivation-goal.cc b/src/libstore/build/derivation-goal.cc
+index bf2bad62c..ef4ce8a0b 100644
+--- a/src/libstore/build/derivation-goal.cc
++++ b/src/libstore/build/derivation-goal.cc
+@@ -1199,6 +1199,8 @@ void DerivationGoal::startBuilder()
+     additionalSandboxProfile = parsedDrv->getStringAttr("__sandboxProfile").value_or("");
+ #endif
  
 +    networked = parsedDrv->getBoolAttr("__networked");
 +
-     /* We are first going to try to create the invalid output paths
-        through substitutes.  If that doesn't work, we'll build
-        them. */
-@@ -2210,7 +2219,7 @@ void DerivationGoal::startBuilder()
+     /* Are we doing a chroot build? */
+     {
+         auto noChroot = parsedDrv->getBoolAttr("__noChroot");
+@@ -1216,7 +1218,7 @@ void DerivationGoal::startBuilder()
          else if (settings.sandboxMode == smDisabled)
              useChroot = false;
          else if (settings.sandboxMode == smRelaxed)
@@ -46,42 +30,68 @@ index 0499273a4..40fe4e859 100644
      }
  
      if (worker.store.storeDir != worker.store.realStoreDir) {
-@@ -2434,7 +2443,7 @@ void DerivationGoal::startBuilder()
-                 "nogroup:x:65534:\n") % sandboxGid).str());
+@@ -1430,7 +1432,7 @@ void DerivationGoal::startBuilder()
+                 "nogroup:x:65534:\n", sandboxGid()));
  
          /* Create /etc/hosts with localhost entry. */
 -        if (!(derivationIsImpure(derivationType)))
-+        if (!allowNetwork())
++        if (!allowNetwork() && !(derivationIsImpure(derivationType)))
              writeFile(chrootRootDir + "/etc/hosts", "127.0.0.1 localhost\n::1 localhost\n");
  
          /* Make the closure of the inputs available in the chroot,
-@@ -2621,7 +2630,7 @@ void DerivationGoal::startBuilder()
+@@ -1617,7 +1619,7 @@ void DerivationGoal::startBuilder()
             us.
          */
  
 -        if (!(derivationIsImpure(derivationType)))
-+        if (!allowNetwork())
++        if (!allowNetwork() && !(derivationIsImpure(derivationType)))
              privateNetwork = true;
  
          userNamespaceSync.create();
-@@ -2833,7 +2842,7 @@ void DerivationGoal::initEnv()
+@@ -1865,7 +1867,7 @@ void DerivationGoal::initEnv()
         to the builder is generally impure, but the output of
         fixed-output derivations is by definition pure (since we
         already know the cryptographic hash of the output). */
 -    if (derivationIsImpure(derivationType)) {
-+    if (allowNetwork()) {
++    if (allowNetwork() || derivationIsImpure(derivationType)) {
          for (auto & i : parsedDrv->getStringsAttr("impureEnvVars").value_or(Strings()))
              env[i] = getEnv(i).value_or("");
      }
-@@ -3447,7 +3456,7 @@ void DerivationGoal::runChild()
+@@ -2487,7 +2489,7 @@ void DerivationGoal::runChild()
              /* Fixed-output derivations typically need to access the
                 network, so give them access to /etc/resolv.conf and so
                 on. */
 -            if (derivationIsImpure(derivationType)) {
-+            if (allowNetwork()) {
++            if (allowNetwork() || derivationIsImpure(derivationType)) {
                  ss.push_back("/etc/resolv.conf");
  
                  // Only use nss functions to resolve hosts and
+@@ -2728,7 +2730,7 @@ void DerivationGoal::runChild()
+ 
+                 sandboxProfile += "(import \"sandbox-defaults.sb\")\n";
+ 
+-                if (derivationIsImpure(derivationType))
++                if (allowNetwork() || derivationIsImpure(derivationType))
+                     sandboxProfile += "(import \"sandbox-network.sb\")\n";
+ 
+                 /* Add the output paths we'll use at build-time to the chroot */
+diff --git a/src/libstore/build/derivation-goal.hh b/src/libstore/build/derivation-goal.hh
+index 4976207e0..c57238403 100644
+--- a/src/libstore/build/derivation-goal.hh
++++ b/src/libstore/build/derivation-goal.hh
+@@ -134,6 +134,12 @@ private:
+     /* Whether to run the build in a private network namespace. */
+     bool privateNetwork = false;
+ 
++    bool networked;
++    bool allowNetwork()
++    {
++        return derivationIsFixed(drv->type()) || networked;
++    }
++
+     typedef void (DerivationGoal::*GoalState)();
+     GoalState state;
+ 
 -- 
-2.28.0
+2.29.0