diff --git "a/pkgs/development/libraries/mpir/\\" "b/pkgs/development/libraries/mpir/\\"
new file mode 100644
index 000000000000..b7872ece6aed
--- /dev/null
+++ "b/pkgs/development/libraries/mpir/\\"
@@ -0,0 +1,20 @@
+{stdenv, fetchurl}:
+stdenv.mkDerivation rec {
+  name = "mpir-${version}";
+  version = "1";
+  inherit buildInputs;
+  src = fetchurl {
+    url = "http://mpir.org/mpir-${version}.tar.bz2";
+    sha256 = "0000000000000000000000000000000000000000000000000000000000000000";
+  };
+  meta = {
+    inherit version;
+    description = ''A highly optimised library for bignum arithmetic forked from GMP'';
+    license = stdenv.lib.licenses. ;
+    maintainers = [stdenv.lib.maintainers.raskin];
+    platforms = stdenv.lib.platforms.linux;
+    downloadPage = "http://mpir.org/downloads.html";
+    homepage = "http://mpir.org/";
+    updateWalker = true;
+  };
+}
diff --git a/pkgs/development/libraries/mpir/default.nix b/pkgs/development/libraries/mpir/default.nix
new file mode 100644
index 000000000000..c3a254c6bdc1
--- /dev/null
+++ b/pkgs/development/libraries/mpir/default.nix
@@ -0,0 +1,20 @@
+{stdenv, fetchurl, m4}:
+stdenv.mkDerivation rec {
+  name = "mpir-${version}";
+  version = "2.7.2";
+  buildInputs = [m4];
+  src = fetchurl {
+    url = "http://mpir.org/mpir-${version}.tar.bz2";
+    sha256 = "1v25dx7cah2vxwzgq78hpzqkryrfxhwx3mcj3jjq3xxljlsw7m57";
+  };
+  meta = {
+    inherit version;
+    description = ''A highly optimised library for bignum arithmetic forked from GMP'';
+    license = stdenv.lib.licenses.lgpl3Plus;
+    maintainers = [stdenv.lib.maintainers.raskin];
+    platforms = stdenv.lib.platforms.linux;
+    downloadPage = "http://mpir.org/downloads.html";
+    homepage = "http://mpir.org/";
+    updateWalker = true;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4402d1697638..47e8a81251a1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7071,6 +7071,9 @@ in
   #GMP ex-satellite, so better keep it near gmp
   mpfr = callPackage ../development/libraries/mpfr/default.nix { };
 
+  # A GMP fork
+  mpir = callPackage ../development/libraries/mpir {};
+
   gobjectIntrospection = callPackage ../development/libraries/gobject-introspection {
     nixStoreDir = config.nix.storeDir or builtins.storeDir;
     inherit (darwin) cctools;