diff --git a/bsc/gpi-2/default.nix b/bsc/gpi-2/default.nix
new file mode 100644
index 0000000..425fe46
--- /dev/null
+++ b/bsc/gpi-2/default.nix
@@ -0,0 +1,38 @@
+{
+  stdenv
+, slurm
+, rdma-core
+, autoconf
+, automake
+, libtool
+, mpi
+, rsync
+, gfortran
+}:
+
+stdenv.mkDerivation rec {
+  pname = "GPI-2";
+  version = src.shortRev;
+
+  src = builtins.fetchGit {
+    url = "ssh://git@bscpm03.bsc.es/interoperability/GPI-2";
+    ref = "lowlevel";
+  };
+
+  preConfigure = ''
+    patchShebangs autogen.sh
+    ./autogen.sh
+  '';
+
+  configureFlags = [
+    "--with-infiniband=${rdma-core}"
+    "--with-mpi=${mpi}"
+    "--with-slurm"
+    "CFLAGS=-fPIC"
+    "CXXFLAGS=-fPIC"
+  ];
+
+  buildInputs = [ slurm mpi rdma-core autoconf automake libtool rsync gfortran ];
+
+  hardeningDisable = [ "all" ];
+}
diff --git a/bsc/tagaspi/default.nix b/bsc/tagaspi/default.nix
new file mode 100644
index 0000000..21e9019
--- /dev/null
+++ b/bsc/tagaspi/default.nix
@@ -0,0 +1,46 @@
+{
+  stdenv
+, automake
+, autoconf
+, libtool
+, mpi
+, autoreconfHook
+, gaspi
+, boost
+, numactl
+, rdma-core
+, gfortran
+}:
+
+stdenv.mkDerivation rec {
+  pname = "tagaspi";
+  version = src.shortRev;
+  enableParallelBuilding = false;
+
+  buildInputs = [
+    autoreconfHook
+    automake
+    autoconf
+    libtool
+    boost
+    mpi
+    numactl
+    rdma-core
+    gfortran
+  ];
+
+  dontDisableStatic = true;
+
+  configureFlags = [
+    "--with-gaspi=${gaspi}"
+    "CFLAGS=-fPIC"
+    "CXXFLAGS=-fPIC"
+  ];
+
+  src = builtins.fetchGit {
+    url = "ssh://git@bscpm03.bsc.es/interoperability/tagaspi";
+    ref = "master";
+  };
+
+  hardeningDisable = [ "all" ];
+}
diff --git a/overlay.nix b/overlay.nix
index dc990c9..6186f7a 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -134,6 +134,16 @@ let
     tampiRelease = callPackage ./bsc/tampi/default.nix { };
     tampiGit = callPackage ./bsc/tampi/git.nix { };
 
+    # =================================================================
+    #  GASPI
+    # =================================================================
+    gpi-2 = callPackage ./bsc/gpi-2/default.nix { };
+
+    # Use GPI-2 as the default implementation for GASPI
+    gaspi = bsc.gpi-2;
+
+    tagaspi = callPackage ./bsc/tagaspi/default.nix { };
+
     # =================================================================
     #  Tracing
     # =================================================================