diff --git a/env/merlin/sysconfigs/config.yaml b/env/merlin/sysconfigs/config.yaml
index 87f463e..7be2ed7 100644
--- a/env/merlin/sysconfigs/config.yaml
+++ b/env/merlin/sysconfigs/config.yaml
@@ -4,28 +4,28 @@ config:
     - /scratch/spack-rhel7
   install_tree:
     projections:
-      ^hdf5+mpi: HDF5/{name}/{version}/{compiler.name}/{compiler.version}
-      ^hdf5~mpi: HDF5_serial/{name}/{version}/{compiler.name}/{compiler.version}
-      ^mpi: MPI/{name}/{version}/{^mpi.name}/{^mpi.version}/{compiler.name}/{compiler.version}
-      all: misc/{name}/{version}/{^mpi.name}/{^mpi.version}/{compiler.name}/{compiler.version}
-      alsa-lib: &libraries_install_projection Librairies/{name}/{version}/{compiler.name}/{compiler.version}
-      aria2: &tools_install_projection Tools/{name}/{version}/{compiler.name}/{compiler.version}
+      ^hdf5+mpi: HDF5/{name}/{version}/{compiler.name}/{compiler.version}/{hashls
+      ^hdf5~mpi: HDF5_serial/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
+      ^mpi: MPI/{name}/{version}/{^mpi.name}/{^mpi.version}/{compiler.name}/{compiler.version}/{hash}
+      all: misc/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
+      alsa-lib: &libraries_install_projection Librairies/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
+      aria2: &tools_install_projection Tools/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
       asciidoc: *tools_install_projection
-      atlas: &compiler_install_projection Compiler/{name}/{version}/{compiler.name}/{compiler.version}
-      autoconf: &programming_install_projection Programming/{name}/{version}/{compiler.name}/{compiler.version}
+      atlas: &compiler_install_projection Compiler/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
+      autoconf: &programming_install_projection Programming/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
       automake: *programming_install_projection
-      bash: &system_install_projection System/{name}/{version}/{compiler.name}/{compiler.version}
+      bash: &system_install_projection System/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
       binutils: *programming_install_projection
       bison: *programming_install_projection
       boost: *compiler_install_projection
-      cbflib: &MX_install_projection MX/{name}/{version}/{compiler.name}/{compiler.version}
-      cistem: &EM_install_projection EM/{name}/{version}/{compiler.name}/{compiler.version}
+      cbflib: &MX_install_projection MX/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
+      cistem: &EM_install_projection EM/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
       clapack: *compiler_install_projection
       clhep: *compiler_install_projection
       cmake: *programming_install_projection
       coreutils: *tools_install_projection
       ctffind: *EM_install_projection
-      cuda: cuda/{name}/{version}/{compiler.name}/{compiler.version}
+      cuda: cuda/{name}/{version}/{compiler.name}/{compiler.version}/{hash}
       eigen: *compiler_install_projection
       emacs: *tools_install_projection
       erlang: *programming_install_projection
@@ -47,7 +47,7 @@ config:
       go: *programming_install_projection
       googletest: *compiler_install_projection
       gsl: *compiler_install_projection
-      hdf5~mpi: Compiler/{name}_serial/{version}/{compiler.name}/{compiler.version}
+      hdf5~mpi: Compiler/{name}_serial/{version}/{compiler.name}/{compiler.version}/{hash}
       hdfview: *tools_install_projection
       hwloc: *libraries_install_projection
       intel: *programming_install_projection
@@ -80,9 +80,11 @@ config:
       ncview: *tools_install_projection
       nettle: *libraries_install_projection
       nmap: *system_install_projection
-      nvhpc: *programming_install_projection
+      nvhpc+mpi: *compiler_install_projection
+      nvhpc~mpi: *programming_install_projection
       openbabel: *MX_install_projection
-      openblas: *compiler_install_projection
+      openblas threads=none: *compiler_install_projection
+      openblas threads=openmp: Compiler/{name}_OMP/{version}/{compiler.name}/{compiler.version}/{hash}
       openjdk: *programming_install_projection
       openjpeg: *tools_install_projection
       openmpi: *compiler_install_projection