diff --git a/pkgs/development/libraries/glibc/2.27.nix b/pkgs/development/libraries/glibc/2.27.nix
new file mode 100644
index 000000000000..bb057ae899e7
--- /dev/null
+++ b/pkgs/development/libraries/glibc/2.27.nix
@@ -0,0 +1,101 @@
+{ stdenv, callPackage
+, withLinuxHeaders ? true
+, installLocales ? true
+, profilingLibraries ? false
+, withGd ? false
+}:
+
+assert stdenv.cc.isGNU;
+
+callPackage ./common-2.27.nix { inherit stdenv; } {
+    name = "glibc" + stdenv.lib.optionalString withGd "-gd";
+
+    inherit withLinuxHeaders profilingLibraries installLocales withGd;
+
+    NIX_NO_SELF_RPATH = true;
+
+    postConfigure = ''
+      # Hack: get rid of the `-static' flag set by the bootstrap stdenv.
+      # This has to be done *after* `configure' because it builds some
+      # test binaries.
+      export NIX_CFLAGS_LINK=
+      export NIX_LDFLAGS_BEFORE=
+
+      export NIX_DONT_SET_RPATH=1
+      unset CFLAGS
+
+      # Apparently --bindir is not respected.
+      makeFlagsArray+=("bindir=$bin/bin" "sbindir=$bin/sbin" "rootsbindir=$bin/sbin")
+    '';
+
+    # The stackprotector and fortify hardening flags are autodetected by glibc
+    # and enabled by default if supported. Setting it for every gcc invocation
+    # does not work.
+    hardeningDisable = [ "stackprotector" "fortify" ];
+
+    # When building glibc from bootstrap-tools, we need libgcc_s at RPATH for
+    # any program we run, because the gcc will have been placed at a new
+    # store path than that determined when built (as a source for the
+    # bootstrap-tools tarball)
+    # Building from a proper gcc staying in the path where it was installed,
+    # libgcc_s will not be at {gcc}/lib, and gcc's libgcc will be found without
+    # any special hack.
+    preInstall = ''
+      if [ -f ${stdenv.cc.cc}/lib/libgcc_s.so.1 ]; then
+          mkdir -p $out/lib
+          cp ${stdenv.cc.cc}/lib/libgcc_s.so.1 $out/lib/libgcc_s.so.1
+          # the .so It used to be a symlink, but now it is a script
+          cp -a ${stdenv.cc.cc}/lib/libgcc_s.so $out/lib/libgcc_s.so
+      fi
+    '';
+
+    postInstall = ''
+      if test -n "$installLocales"; then
+          make -j''${NIX_BUILD_CORES:-1} -l''${NIX_BUILD_CORES:-1} localedata/install-locales
+      fi
+
+      test -f $out/etc/ld.so.cache && rm $out/etc/ld.so.cache
+
+      if test -n "$linuxHeaders"; then
+          # Include the Linux kernel headers in Glibc, except the `scsi'
+          # subdirectory, which Glibc provides itself.
+          (cd $dev/include && \
+           ln -sv $(ls -d $linuxHeaders/include/* | grep -v scsi\$) .)
+      fi
+
+      # Fix for NIXOS-54 (ldd not working on x86_64).  Make a symlink
+      # "lib64" to "lib".
+      if test -n "$is64bit"; then
+          ln -s lib $out/lib64
+      fi
+
+      # Get rid of more unnecessary stuff.
+      rm -rf $out/var $bin/bin/sln
+
+      # For some reason these aren't stripped otherwise and retain reference
+      # to bootstrap-tools; on cross-arm this stripping would break objects.
+      if [ -z "$crossConfig" ]; then
+        for i in "$out"/lib/*.a; do
+            [ "$i" = "$out/lib/libm.a" ] || strip -S "$i"
+        done
+      fi
+
+      # Put libraries for static linking in a separate output.  Note
+      # that libc_nonshared.a and libpthread_nonshared.a are required
+      # for dynamically-linked applications.
+      mkdir -p $static/lib
+      mv $out/lib/*.a $static/lib
+      mv $static/lib/lib*_nonshared.a $out/lib
+      # Some of *.a files are linker scripts where moving broke the paths.
+      sed "/^GROUP/s|$out/lib/lib|$static/lib/lib|g" \
+        -i "$static"/lib/*.a
+
+      # Work around a Nix bug: hard links across outputs cause a build failure.
+      cp $bin/bin/getconf $bin/bin/getconf_
+      mv $bin/bin/getconf_ $bin/bin/getconf
+    '';
+
+    separateDebugInfo = true;
+
+    meta.description = "The GNU C Library";
+  }
diff --git a/pkgs/development/libraries/glibc/common-2.27.nix b/pkgs/development/libraries/glibc/common-2.27.nix
new file mode 100644
index 000000000000..d493feb35fa8
--- /dev/null
+++ b/pkgs/development/libraries/glibc/common-2.27.nix
@@ -0,0 +1,208 @@
+/* Build configuration used to build glibc, Info files, and locale
+   information.  */
+
+{ stdenv, lib
+, buildPlatform, hostPlatform
+, buildPackages
+, fetchurl
+, linuxHeaders ? null
+, gd ? null, libpng ? null
+, bison
+}:
+
+{ name
+, withLinuxHeaders ? false
+, profilingLibraries ? false
+, installLocales ? false
+, withGd ? false
+, meta
+, ...
+} @ args:
+
+let
+  version = "2.27";
+  patchSuffix = "";
+  sha256 = "0wpwq7gsm7sd6ysidv0z575ckqdg13cr2njyfgrbgh4f65adwwji";
+  cross = if buildPlatform != hostPlatform then hostPlatform else null;
+in
+
+assert withLinuxHeaders -> linuxHeaders != null;
+assert withGd -> gd != null && libpng != null;
+
+stdenv.mkDerivation ({
+  inherit  installLocales;
+  linuxHeaders = if withLinuxHeaders then linuxHeaders else null;
+
+  # The host/target system.
+  crossConfig = if cross != null then cross.config else null;
+
+  inherit (stdenv) is64bit;
+
+  enableParallelBuilding = true;
+
+  patches =
+    [
+      /* Have rpcgen(1) look for cpp(1) in $PATH.  */
+      ./rpcgen-path.patch
+
+      /* Allow NixOS and Nix to handle the locale-archive. */
+      ./nix-locale-archive-2.27.patch
+
+      /* Don't use /etc/ld.so.cache, for non-NixOS systems.  */
+      ./dont-use-system-ld-so-cache-2.27.patch
+
+      /* Don't use /etc/ld.so.preload, but /etc/ld-nix.so.preload.  */
+      ./dont-use-system-ld-so-preload.patch
+
+      /* The command "getconf CS_PATH" returns the default search path
+         "/bin:/usr/bin", which is inappropriate on NixOS machines. This
+         patch extends the search path by "/run/current-system/sw/bin". */
+      ./fix_path_attribute_in_getconf.patch
+
+      /* Allow running with RHEL 6 -like kernels.  The patch adds an exception
+        for glibc to accept 2.6.32 and to tag the ELFs as 2.6.32-compatible
+        (otherwise the loader would refuse libc).
+        Note that glibc will fully work only on their heavily patched kernels
+        and we lose early mismatch detection on 2.6.32.
+
+        On major glibc updates we should check that the patched kernel supports
+        all the required features.  ATM it's verified up to glibc-2.26-131.
+        # HOWTO: check glibc sources for changes in kernel requirements
+        git log -p glibc-2.25.. sysdeps/unix/sysv/linux/x86_64/kernel-features.h sysdeps/unix/sysv/linux/kernel-features.h
+        # get kernel sources (update the URL)
+        mkdir tmp && cd tmp
+        curl http://vault.centos.org/6.9/os/Source/SPackages/kernel-2.6.32-696.el6.src.rpm | rpm2cpio - | cpio -idmv
+        tar xf linux-*.bz2
+        # check syscall presence, for example
+        less linux-*?/arch/x86/kernel/syscall_table_32.S
+       */
+      ./allow-kernel-2.6.32.patch
+    ]
+    ++ lib.optional stdenv.isx86_64 ./fix-x64-abi.patch;
+
+  postPatch =
+    ''
+      # Needed for glibc to build with the gnumake 3.82
+      # http://comments.gmane.org/gmane.linux.lfs.support/31227
+      sed -i 's/ot \$/ot:\n\ttouch $@\n$/' manual/Makefile
+
+      # nscd needs libgcc, and we don't want it dynamically linked
+      # because we don't want it to depend on bootstrap-tools libs.
+      echo "LDFLAGS-nscd += -static-libgcc" >> nscd/Makefile
+    '';
+
+  configureFlags =
+    [ "-C"
+      "--enable-add-ons"
+      "--enable-obsolete-nsl"
+      "--enable-obsolete-rpc"
+      "--sysconfdir=/etc"
+      "--enable-stackguard-randomization"
+      (if withLinuxHeaders
+       then "--with-headers=${linuxHeaders}/include"
+       else "--without-headers")
+      (if profilingLibraries
+       then "--enable-profile"
+       else "--disable-profile")
+    ] ++ lib.optionals withLinuxHeaders [
+      "--enable-kernel=3.2.0" # can't get below with glibc >= 2.26
+    ] ++ lib.optionals (cross != null) [
+      (if cross ? float && cross.float == "soft" then "--without-fp" else "--with-fp")
+    ] ++ lib.optionals (cross != null) [
+      "--with-__thread"
+    ] ++ lib.optionals (cross == null && stdenv.isArm) [
+      "--host=arm-linux-gnueabi"
+      "--build=arm-linux-gnueabi"
+
+      # To avoid linking with -lgcc_s (dynamic link)
+      # so the glibc does not depend on its compiler store path
+      "libc_cv_as_needed=no"
+    ] ++ lib.optional withGd "--with-gd";
+
+  installFlags = [ "sysconfdir=$(out)/etc" ];
+
+  outputs = [ "out" "bin" "dev" "static" ];
+
+  depsBuildBuild = [ buildPackages.stdenv.cc ];
+  nativeBuildInputs = [ bison ];
+  buildInputs = lib.optionals withGd [ gd libpng ];
+
+  # Needed to install share/zoneinfo/zone.tab.  Set to impure /bin/sh to
+  # prevent a retained dependency on the bootstrap tools in the stdenv-linux
+  # bootstrap.
+  BASH_SHELL = "/bin/sh";
+}
+
+// (removeAttrs args [ "withLinuxHeaders" "withGd" ]) //
+
+{
+  name = name + "-${version}${patchSuffix}";
+
+  src = fetchurl {
+    url = "mirror://gnu/glibc/glibc-${version}.tar.xz";
+    inherit sha256;
+  };
+
+  # Remove absolute paths from `configure' & co.; build out-of-tree.
+  preConfigure = ''
+    export PWD_P=$(type -tP pwd)
+    for i in configure io/ftwtest-sh; do
+        # Can't use substituteInPlace here because replace hasn't been
+        # built yet in the bootstrap.
+        sed -i "$i" -e "s^/bin/pwd^$PWD_P^g"
+    done
+
+    mkdir ../build
+    cd ../build
+
+    configureScript="`pwd`/../$sourceRoot/configure"
+
+    ${lib.optionalString (stdenv.cc.libc != null)
+      ''makeFlags="$makeFlags BUILD_LDFLAGS=-Wl,-rpath,${stdenv.cc.libc}/lib"''
+    }
+
+
+  '' + lib.optionalString (cross != null) ''
+    sed -i s/-lgcc_eh//g "../$sourceRoot/Makeconfig"
+
+    cat > config.cache << "EOF"
+    libc_cv_forced_unwind=yes
+    libc_cv_c_cleanup=yes
+    libc_cv_gnu89_inline=yes
+    EOF
+  '';
+
+  preBuild = lib.optionalString withGd "unset NIX_DONT_SET_RPATH";
+
+  meta = {
+    homepage = http://www.gnu.org/software/libc/;
+    description = "The GNU C Library";
+
+    longDescription =
+      '' Any Unix-like operating system needs a C library: the library which
+         defines the "system calls" and other basic facilities such as
+         open, malloc, printf, exit...
+
+         The GNU C library is used as the C library in the GNU system and
+         most systems with the Linux kernel.
+      '';
+
+    license = lib.licenses.lgpl2Plus;
+
+    maintainers = [ lib.maintainers.eelco ];
+    platforms = lib.platforms.linux;
+  } // meta;
+}
+
+// lib.optionalAttrs (cross != null) {
+  preInstall = null; # clobber the native hook
+
+  dontStrip = true;
+
+  separateDebugInfo = false; # this is currently broken for crossDrv
+
+  # To avoid a dependency on the build system 'bash'.
+  preFixup = ''
+    rm -f $bin/bin/{ldd,tzselect,catchsegv,xtrace}
+  '';
+})
diff --git a/pkgs/development/libraries/glibc/dont-use-system-ld-so-cache-2.27.patch b/pkgs/development/libraries/glibc/dont-use-system-ld-so-cache-2.27.patch
new file mode 100644
index 000000000000..f84b1049adf8
--- /dev/null
+++ b/pkgs/development/libraries/glibc/dont-use-system-ld-so-cache-2.27.patch
@@ -0,0 +1,46 @@
+diff -Naur glibc-2.27-orig/elf/ldconfig.c glibc-2.27/elf/ldconfig.c
+--- glibc-2.27-orig/elf/ldconfig.c	2018-02-01 11:17:18.000000000 -0500
++++ glibc-2.27/elf/ldconfig.c	2018-02-17 22:43:17.232175182 -0500
+@@ -51,7 +51,7 @@
+ #endif
+ 
+ #ifndef LD_SO_CONF
+-# define LD_SO_CONF SYSCONFDIR "/ld.so.conf"
++# define LD_SO_CONF PREFIX "/etc/ld.so.conf"
+ #endif
+ 
+ /* Get libc version number.  */
+diff -Naur glibc-2.27-orig/elf/Makefile glibc-2.27/elf/Makefile
+--- glibc-2.27-orig/elf/Makefile	2018-02-01 11:17:18.000000000 -0500
++++ glibc-2.27/elf/Makefile	2018-02-17 22:44:50.334006750 -0500
+@@ -559,13 +559,13 @@
+ 
+ $(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
+ 
+-SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
+-CFLAGS-ldconfig.c += $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
++PREFIX-FLAGS := -D'PREFIX="$(prefix)"'
++CFLAGS-ldconfig.c += $(PREFIX-FLAGS) -D'LIBDIR="$(libdir)"' \
+ 		    -D'SLIBDIR="$(slibdir)"'
+ libof-ldconfig = ldconfig
+-CFLAGS-dl-cache.c += $(SYSCONF-FLAGS)
+-CFLAGS-cache.c += $(SYSCONF-FLAGS)
+-CFLAGS-rtld.c += $(SYSCONF-FLAGS)
++CFLAGS-dl-cache.c += $(PREFIX-FLAGS)
++CFLAGS-cache.c += $(PREFIX-FLAGS)
++CFLAGS-rtld.c += $(PREFIX-FLAGS)
+ 
+ cpp-srcs-left := $(all-rtld-routines:=.os)
+ lib := rtld
+diff -Naur glibc-2.27-orig/sysdeps/generic/dl-cache.h glibc-2.27/sysdeps/generic/dl-cache.h
+--- glibc-2.27-orig/sysdeps/generic/dl-cache.h	2018-02-01 11:17:18.000000000 -0500
++++ glibc-2.27/sysdeps/generic/dl-cache.h	2018-02-17 22:45:20.471598816 -0500
+@@ -28,7 +28,7 @@
+ #endif
+ 
+ #ifndef LD_SO_CACHE
+-# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache"
++# define LD_SO_CACHE PREFIX "/etc/ld.so.cache"
+ #endif
+ 
+ #ifndef add_system_dir
diff --git a/pkgs/development/libraries/glibc/nix-locale-archive-2.27.patch b/pkgs/development/libraries/glibc/nix-locale-archive-2.27.patch
new file mode 100644
index 000000000000..1b3590db4fdd
--- /dev/null
+++ b/pkgs/development/libraries/glibc/nix-locale-archive-2.27.patch
@@ -0,0 +1,118 @@
+diff -Naur glibc-2.27-orig/locale/loadarchive.c glibc-2.27/locale/loadarchive.c
+--- glibc-2.27-orig/locale/loadarchive.c	2018-02-01 11:17:18.000000000 -0500
++++ glibc-2.27/locale/loadarchive.c	2018-02-17 22:32:25.680169462 -0500
+@@ -123,6 +123,23 @@
+   return MAX (namehash_end, MAX (string_end, locrectab_end));
+ }
+ 
++static int
++open_locale_archive (void)
++{
++  int fd = -1;
++  char *versioned_path = getenv ("LOCAL_ARCHIVE_2_27");
++  char *path = getenv ("LOCAL_ARCHIVE");
++  if (versioned_path)
++    fd = __open_nocancel (versioned_path, O_RDONLY|O_LARGEFILE|O_CLOEXEC);
++  if (path && fd < 0)
++    fd = __open_nocancel (path, O_RDONLY|O_LARGEFILE|O_CLOEXEC);
++  if (fd < 0)
++    fd = __open_nocancel (archfname, O_RDONLY|O_LARGEFILE|O_CLOEXEC);
++  if (fd < 0)
++    fd = __open_nocancel ("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE|O_CLOEXEC);
++  return fd;
++}
++
+ 
+ /* Find the locale *NAMEP in the locale archive, and return the
+    internalized data structure for its CATEGORY data.  If this locale has
+@@ -202,7 +219,7 @@
+       archmapped = &headmap;
+ 
+       /* The archive has never been opened.  */
+-      fd = __open_nocancel (archfname, O_RDONLY|O_LARGEFILE|O_CLOEXEC);
++      fd = open_locale_archive ();
+       if (fd < 0)
+ 	/* Cannot open the archive, for whatever reason.  */
+ 	return NULL;
+@@ -397,8 +414,7 @@
+ 	  if (fd == -1)
+ 	    {
+ 	      struct stat64 st;
+-	      fd = __open_nocancel (archfname,
+-				    O_RDONLY|O_LARGEFILE|O_CLOEXEC);
++	      fd = open_locale_archive ();
+ 	      if (fd == -1)
+ 		/* Cannot open the archive, for whatever reason.  */
+ 		return NULL;
+diff -Naur glibc-2.27-orig/locale/programs/locale.c glibc-2.27/locale/programs/locale.c
+--- glibc-2.27-orig/locale/programs/locale.c	2018-02-01 11:17:18.000000000 -0500
++++ glibc-2.27/locale/programs/locale.c	2018-02-17 22:36:39.726293213 -0500
+@@ -633,6 +633,24 @@
+ 
+ 
+ static int
++open_locale_archive (void)
++{
++  int fd = -1;
++  char *versioned_path = getenv ("LOCAL_ARCHIVE_2_27");
++  char *path = getenv ("LOCAL_ARCHIVE");
++  if (versioned_path)
++    fd = open64 (versioned_path, O_RDONLY);
++  if (path && fd < 0)
++    fd = open64 (path, O_RDONLY);
++  if (fd < 0)
++    fd = open64 (ARCHIVE_NAME, O_RDONLY);
++  if (fd < 0)
++    fd = open64 ("/usr/lib/locale/locale-archive", O_RDONLY);
++  return fd;
++}
++
++
++static int
+ write_archive_locales (void **all_datap, char *linebuf)
+ {
+   struct stat64 st;
+@@ -644,7 +662,7 @@
+   int fd, ret = 0;
+   uint32_t cnt;
+ 
+-  fd = open64 (ARCHIVE_NAME, O_RDONLY);
++  fd = open_locale_archive ();
+   if (fd < 0)
+     return 0;
+ 
+diff -Naur glibc-2.27-orig/locale/programs/locarchive.c glibc-2.27/locale/programs/locarchive.c
+--- glibc-2.27-orig/locale/programs/locarchive.c	2018-02-01 11:17:18.000000000 -0500
++++ glibc-2.27/locale/programs/locarchive.c	2018-02-17 22:40:51.245293975 -0500
+@@ -117,6 +117,22 @@
+ }
+ 
+ 
++static int
++open_locale_archive (const char * archivefname, int flags)
++{
++  int fd = -1;
++  char *versioned_path = getenv ("LOCAL_ARCHIVE_2_27");
++  char *path = getenv ("LOCAL_ARCHIVE");
++  if (versioned_path)
++    fd = open64 (versioned_path, flags);
++  if (path && fd < 0)
++    fd = open64 (path, flags);
++  if (fd < 0)
++    fd = open64 (archivefname, flags);
++  return fd;
++}
++
++
+ static void
+ create_archive (const char *archivefname, struct locarhandle *ah)
+ {
+@@ -578,7 +594,7 @@
+   while (1)
+     {
+       /* Open the archive.  We must have exclusive write access.  */
+-      fd = open64 (archivefname, readonly ? O_RDONLY : O_RDWR);
++      fd = open_locale_archive (archivefname, readonly ? O_RDONLY : O_RDWR);
+       if (fd == -1)
+ 	{
+ 	  /* Maybe the file does not yet exist? If we are opening
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 68c821cc53ee..1b4fbf8c1e6f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8748,6 +8748,9 @@ with pkgs;
   glibc = callPackage ../development/libraries/glibc {
     installLocales = config.glibc.locales or false;
   };
+  glibc_2_27 = callPackage ../development/libraries/glibc/2.27.nix {
+    installLocales = config.glibc.locales or false;
+  };
 
   glibc_memusage = callPackage ../development/libraries/glibc {
     installLocales = false;