diff --git a/glicid/packages/mpi.scm b/glicid/packages/mpi.scm
index 9d6141e..4f95e29 100644
--- a/glicid/packages/mpi.scm
+++ b/glicid/packages/mpi.scm
@@ -20,10 +20,10 @@
 ;    )
 ;)
 
-(define-public openmpi-upstream-4.1.8
+(define openmpi-upstream-4.1.8
   (package
     (inherit gnu:openmpi-4)
-    (name "openmpi-4-upstream")
+    (name "openmpi-upstream-4")
     (version "4.1.8")
     (source
      (origin
@@ -35,10 +35,25 @@
         (base32 "1a8jkxqxbkyx9np2vyjrhgckd0zdzkx1286c20kw079a2ginhvs6"))
        (patches (search-patches "openmpi-mtl-priorities.patch"))))))
 
+(define openmpi-upstream-unpatched-4.1.8
+  (package
+    (inherit gnu:openmpi-4)
+    (name "openmpi-upstream")
+    (version "4.1.8")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (string-append "https://www.open-mpi.org/software/ompi/v"
+                           (version-major+minor version) "/downloads/openmpi-"
+                           version ".tar.bz2"))
+       (sha256
+        (base32 "1a8jkxqxbkyx9np2vyjrhgckd0zdzkx1286c20kw079a2ginhvs6"))))))
+
+
+
 (define openmpi-4-latest
   (latest-version openmpi-upstream-4.1.8 gnu:openmpi-4))
 
-
 (define-public openmpi-glicid
   (package/inherit openmpi-4-latest
     (name "openmpi-glicid")
@@ -47,6 +62,16 @@
 
     ))
 
+(define-public openmpi-unpatched-glicid
+  (package/inherit openmpi-upstream-unpatched-4.1.8
+    (name "openmpi-glicid-unpatched")
+    (inputs (modify-inputs (package-inputs openmpi-upstream-unpatched-4.1.8)
+              (replace "slurm" slurm-glicid)))
+
+    ))
+
+
+
 
 
 (define-public openmpi-glicid-pmixv4
@@ -70,3 +95,24 @@
 
     ))
 
+(define-public openmpi-glicid-unpatched-pmixv4
+  (package/inherit openmpi-unpatched-glicid
+    (name "openmpi-glicid-unpatched-pmixv4")
+    (arguments (substitute-keyword-arguments (package-arguments
+                                              openmpi-unpatched-glicid)
+                 ((#:configure-flags flags)
+                  #~(append #$flags
+                            (list ;original flags has --with-pmix=internal, we should remove it but last --with-pmix is the one taken into account.
+                                  (string-append "--with-pmix="
+                                                 #$(this-package-input
+                                                    "openpmix"))
+                                  (string-append "--with-prrte="
+                                                 #$(this-package-input "prrte"))) ;#$flags
+                            ))))
+    (inputs (modify-inputs (package-inputs openmpi-unpatched-glicid)
+              (append openpmix) ; because we use pmix4 now, openpmi-4 defaults to internal pmix3
+              (append prrte) ;idem
+              ))
+
+    ))
+