diff --git a/pkgs/nix/cvmfs.patch b/pkgs/nix/cvmfs.patch
index 7ec5b35..78b10ef 100644
--- a/pkgs/nix/cvmfs.patch
+++ b/pkgs/nix/cvmfs.patch
@@ -1,12 +1,12 @@
-diff --git a/scripts/nix-build.in b/scripts/nix-build.in
-index bb61e1c..d58d687 100755
---- a/scripts/nix-build.in
-+++ b/scripts/nix-build.in
-@@ -276,6 +276,7 @@ foreach my $expr (@exprs) {
-             }
-             # NixOS hack: prevent /etc/bashrc from sourcing /etc/profile.
-             $ENV{'__ETC_PROFILE_SOURCED'} = 1;
-+            $ENV{'SKIP_CC_CVMFS'} = 1;
+diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
+index 99f77345..4f71fca1 100755
+--- a/src/nix-build/nix-build.cc
++++ b/src/nix-build/nix-build.cc
+@@ -372,6 +372,7 @@ void mainWrapped(int argc, char * * argv)
+             env = newEnv;
+             // NixOS hack: prevent /etc/bashrc from sourcing /etc/profile.
+             env["__ETC_PROFILE_SOURCED"] = "1";
++            env["SKIP_CC_CVMFS"] = "1";
          }
-         $ENV{'NIX_BUILD_TOP'} = $ENV{'TMPDIR'} = $ENV{'TEMPDIR'} = $ENV{'TMP'} = $ENV{'TEMP'} = $tmp;
-         $ENV{'NIX_STORE'} = $Nix::Config::storeDir;
+ 
+         env["NIX_BUILD_TOP"] = env["TMPDIR"] = env["TEMPDIR"] = env["TMP"] = env["TEMP"] = tmp;
diff --git a/pkgs/nix/remote.patch b/pkgs/nix/remote.patch
index d6a50a4..cee559b 100644
--- a/pkgs/nix/remote.patch
+++ b/pkgs/nix/remote.patch
@@ -1,52 +1,47 @@
 diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
-index 262e465..1bee9a6 100644
+index 8f0b6555..b874e760 100644
 --- a/src/libstore/remote-store.cc
 +++ b/src/libstore/remote-store.cc
-@@ -16,6 +16,7 @@
- 
- #include <iostream>
+@@ -15,6 +15,7 @@
+ #include <errno.h>
+ #include <fcntl.h>
  #include <unistd.h>
 +#include <netdb.h>
+ 
  #include <cstring>
  
- namespace nix {
-@@ -55,9 +56,9 @@ void RemoteStore::openConnection(bool reserveSpace)
-     if (remoteMode == "daemon")
-         /* Connect to a daemon that does the privileged work for
-            us. */
--        connectToDaemon();
-+        connectToDaemonUNIX();
-     else
--        throw Error(format("invalid setting for NIX_REMOTE, ‘%1%’") % remoteMode);
-+        connectToDaemonINET(remoteMode);
- 
-     from.fd = fdSocket;
-     to.fd = fdSocket;
-@@ -95,7 +96,7 @@ void RemoteStore::openConnection(bool reserveSpace)
+@@ -133,6 +134,76 @@ ref<RemoteStore::Connection> UDSRemoteStore::openConnection()
  }
  
  
--void RemoteStore::connectToDaemon()
-+void RemoteStore::connectToDaemonUNIX()
- {
-     fdSocket = socket(PF_UNIX, SOCK_STREAM, 0);
-     if (fdSocket == -1)
-@@ -128,6 +129,53 @@ void RemoteStore::connectToDaemon()
- }
- 
- 
-+
-+void RemoteStore::connectToDaemonINET(const string & remoteAddress)
++TCPRemoteStore::TCPRemoteStore(std::string tcp_path, const Params & params)
++    : Store(params)
++    , LocalFSStore(params)
++    , RemoteStore(params)
++    , path(tcp_path)
 +{
-+    size_t remoteColonOffset = remoteAddress.find(':');
-+    if (remoteColonOffset == string::npos)
-+        throw Error(format("invalid daemon address ‘%1%’ (should be daemon or host:port)") % remoteAddress);
++}
 +
-+    string remoteHost = remoteAddress.substr(0,remoteColonOffset);
-+    string remoteService = remoteAddress.substr(remoteColonOffset+1);
++
++std::string TCPRemoteStore::getUri()
++{
++    return std::string("tcp://") + path;
++}
++
++
++ref<RemoteStore::Connection> TCPRemoteStore::openConnection()
++{
++    auto conn = make_ref<Connection>();
++
++    size_t remoteColonOffset = path.find(':');
++    if (remoteColonOffset == string::npos)
++        throw Error(format("invalid daemon address '%1%' (should be host:port)") % path);
++
++    string remoteHost = path.substr(0,remoteColonOffset);
++    string remoteService = path.substr(remoteColonOffset+1);
 +
 +    addrinfo addrHints;
-+    addrinfo* addrResults;
++    addrinfo* addrResults_raw;
 +
 +    memset(&addrHints,0,sizeof(addrHints));
 +    addrHints.ai_flags = AI_ADDRCONFIG | AI_V4MAPPED;
@@ -54,48 +49,91 @@ index 262e465..1bee9a6 100644
 +    addrHints.ai_socktype = SOCK_STREAM;
 +    addrHints.ai_protocol = 0;
 +
-+    int result = getaddrinfo(remoteHost.c_str(), remoteService.c_str(), &addrHints, &addrResults);
++    int result = getaddrinfo(remoteHost.c_str(), remoteService.c_str(), &addrHints, &addrResults_raw);
 +    if (result != 0)
-+        throw Error(format("unable to lookup daemon address ‘%1%’") % remoteAddress);
-+    std::unique_ptr<addrinfo,void (&)(addrinfo *)> addrResults_gc(addrResults,freeaddrinfo);
++        throw Error(format("unable to lookup daemon address '%1%'") % path);
++    std::unique_ptr<addrinfo,void (&)(addrinfo *)> addrResults(addrResults_raw,freeaddrinfo);
 +
-+    int remoteSocket;
 +    addrinfo* addrIter;
-+    for (addrIter = addrResults; addrIter; addrIter = addrIter->ai_next) {
-+        remoteSocket = socket(addrIter->ai_family, addrIter->ai_socktype, addrIter->ai_protocol);
-+        if (remoteSocket == -1)
++    for (addrIter = addrResults.get(); addrIter; addrIter = addrIter->ai_next) {
++        AutoCloseFD remoteSocket = socket(addrIter->ai_family, addrIter->ai_socktype
++                                          #ifdef SOCK_CLOEXEC
++                                          | SOCK_CLOEXEC
++                                          #endif
++                                          , addrIter->ai_protocol);
++        if (!remoteSocket)
 +            continue;
 +
-+        int result = connect(remoteSocket, addrIter->ai_addr, addrIter->ai_addrlen);
-+        if (result == -1) {
-+            close(remoteSocket);
++        if (::connect(remoteSocket.get(), addrIter->ai_addr, addrIter->ai_addrlen) == -1)
 +            continue;
-+        }
 +
-+        fdSocket = remoteSocket;
++        conn->fd = std::move(remoteSocket);
 +        break;
 +    }
 +    if (addrIter == 0)
-+        throw Error(format("unable to connect to daemon at ‘%1%’") % remoteAddress);
++        throw Error(format("unable to connect to daemon at '%1%'") % path);
 +
-+    fdSocket = remoteSocket;
++    conn->from.fd = conn->fd.get();
++    conn->to.fd = conn->fd.get();
++
++    conn->startTime = std::chrono::steady_clock::now();
++
++    initConnection(*conn);
++
++    return conn;
 +}
 +
 +
- RemoteStore::~RemoteStore()
+ void RemoteStore::initConnection(Connection & conn)
  {
-     try {
+     /* Send the magic greeting, check for the reply. */
+@@ -734,14 +805,18 @@ void RemoteStore::Connection::processStderr(Sink * sink, Source * source)
+     }
+ }
+ 
+-static std::string uriScheme = "unix://";
++static std::string uriSchemeUnix = "unix://";
++static std::string uriSchemeTCP = "tcp://";
+ 
+ static RegisterStoreImplementation regStore([](
+     const std::string & uri, const Store::Params & params)
+     -> std::shared_ptr<Store>
+ {
+-    if (std::string(uri, 0, uriScheme.size()) != uriScheme) return 0;
+-    return std::make_shared<UDSRemoteStore>(std::string(uri, uriScheme.size()), params);
++  if (std::string(uri, 0, uriSchemeUnix.size()) == uriSchemeUnix)
++    return std::make_shared<UDSRemoteStore>(std::string(uri, uriSchemeUnix.size()), params);
++  if (std::string(uri, 0, uriSchemeTCP.size()) == uriSchemeTCP)
++    return std::make_shared<TCPRemoteStore>(std::string(uri, uriSchemeTCP.size()), params);
++  return 0;
+ });
+ 
+ }
 diff --git a/src/libstore/remote-store.hh b/src/libstore/remote-store.hh
-index b0787c0..6fd404f 100644
+index 7f36e206..544b76eb 100644
 --- a/src/libstore/remote-store.hh
 +++ b/src/libstore/remote-store.hh
-@@ -101,7 +101,8 @@ private:
- 
-     void processStderr(Sink * sink = 0, Source * source = 0);
- 
--    void connectToDaemon();
-+    void connectToDaemonUNIX();
-+    void connectToDaemonINET(const string & remoteAddress);
- 
-     void setOptions();
+@@ -149,5 +149,23 @@ private:
+     std::experimental::optional<std::string> path;
  };
+ 
++class TCPRemoteStore : public LocalFSStore, public RemoteStore
++{
++public:
++
++    TCPRemoteStore(std::string path, const Params & params);
++
++    std::string getUri() override;
++
++private:
++
++    struct Connection : RemoteStore::Connection
++    {
++        AutoCloseFD fd;
++    };
++
++    ref<RemoteStore::Connection> openConnection() override;
++    std::string path;
++};
+ 
+ }
diff --git a/temporary/all-temporary.nix b/temporary/all-temporary.nix
index 125f2ab..76fc72b 100644
--- a/temporary/all-temporary.nix
+++ b/temporary/all-temporary.nix
@@ -7,9 +7,4 @@
 
 self: super: pkgs: with pkgs; {
 
-  # https://github.com/NixOS/nix/pull/1645
-  nixStable = super.nixStable.overrideAttrs
-    ( attrs: { patches = attrs.patches or [] ++ [ ./nix/stat.patch ]; } );
-  nix = super.nix.overrideAttrs
-    ( attrs: { patches = attrs.patches or [] ++ [ ./nix/stat.patch ]; } );
 }
diff --git a/temporary/nix/stat.patch b/temporary/nix/stat.patch
deleted file mode 100644
index bee5a3c..0000000
--- a/temporary/nix/stat.patch
+++ /dev/null
@@ -1,33 +0,0 @@
-diff --git a/src/libutil/util.cc b/src/libutil/util.cc
-index 0b11330..4c1dff2 100644
---- a/src/libutil/util.cc
-+++ b/src/libutil/util.cc
-@@ -198,17 +198,17 @@ bool pathExists(const Path & path)
- Path readLink(const Path & path)
- {
-     checkInterrupt();
--    struct stat st = lstat(path);
--    if (!S_ISLNK(st.st_mode))
--        throw Error(format("‘%1%’ is not a symlink") % path);
--    char buf[st.st_size];
--    ssize_t rlsize = readlink(path.c_str(), buf, st.st_size);
--    if (rlsize == -1)
--        throw SysError(format("reading symbolic link ‘%1%’") % path);
--    else if (rlsize > st.st_size)
--        throw Error(format("symbolic link ‘%1%’ size overflow %2% > %3%")
--            % path % rlsize % st.st_size);
--    return string(buf, st.st_size);
-+    for (ssize_t bufSize = PATH_MAX/4; true; bufSize += bufSize/2) {
-+        char buf[bufSize];
-+        ssize_t rlSize = readlink(path.c_str(), buf, bufSize);
-+        if (rlSize == -1)
-+            if (errno == EINVAL)
-+                throw Error(format("'%1%' is not a symlink") % path);
-+            else
-+                throw SysError(format("reading symbolic link '%1%'") % path);
-+        else if (rlSize < bufSize)
-+            return string(buf, rlSize);
-+    }
- }
- 
-