ELSI: add v2.11 and dlaf variant (#46317)

* provide dlaff libs

* fix incompatibility with ntpoly

* add cuda conflicts

* [@spackbot] updating style on behalf of RMeli

* Update var/spack/repos/builtin/packages/elsi/package.py

Co-authored-by: Alberto Invernizzi <9337627+albestro@users.noreply.github.com>

* move pexsi conflict to context

---------

Co-authored-by: RMeli <RMeli@users.noreply.github.com>
Co-authored-by: Alberto Invernizzi <9337627+albestro@users.noreply.github.com>

var/spack/repos/builtin/packages/dla-future-fortran/package.py

@@ -51,3 +51,9 @@ def cmake_args(self):
             args.append(self.define("MPIEXEC_MAX_NUMPROCS", 6))
 
         return args
+
+    @property
+    def libs(self):
+        return find_libraries(
+            "libDLAF_Fortran", root=self.home, shared=self.spec.satisfies("+shared")
+        )

var/spack/repos/builtin/packages/elsi/package.py

@@ -18,6 +18,7 @@ class Elsi(CMakePackage, CudaPackage):
 
     license("BSD-3-Clause")
 
+    version("2.11.0", sha256="2e6929827ed9c99a32381ed9da40482e862c28608d59d4f27db7dcbcaed1520d")
     version("2.10.1", sha256="b3c7526d46a9139a26680787172a3df15bc648715a35bdf384053231e94ab829")
     version(
         "2.2.1",
@@ -30,6 +31,8 @@ class Elsi(CMakePackage, CudaPackage):
     depends_on("cxx", type="build")  # generated
     depends_on("fortran", type="build")  # generated
 
+    generator("ninja")
+
     variant(
         "add_underscore",
         default=True,
@@ -65,11 +68,12 @@ class Elsi(CMakePackage, CudaPackage):
     )
     variant(
         "internal_elpa_version",
-        default="2024",
+        default="2020",
-        values=("2024", "2023_11", "2023", "2021", "2020"),
+        values=("2020", "2021", conditional("2023", "2023_11", "2024", when="@:2.11")),
         description="Internal ELPA version",
         multi=False,
     )
+    variant("dlaf", default=False, when="@2.11:", description="Enable DLA-Future support")
 
     # Basic dependencies
     depends_on("blas", type="link")
@@ -78,7 +82,10 @@ class Elsi(CMakePackage, CudaPackage):
     depends_on("mpi")
 
     # Library dependencies
-    depends_on("ntpoly", when="+use_external_ntpoly")
+    with when("+use_external_ntpoly"):
+        depends_on("ntpoly")
+        depends_on("ntpoly@3:", when="@2.11:")
+        conflicts("^ntpoly@3:", when="@:2.10")
     with when("+use_external_elpa"):
         depends_on("elpa+cuda", when="+cuda")
         depends_on("elpa~cuda", when="~cuda")
@@ -94,9 +101,14 @@ class Elsi(CMakePackage, CudaPackage):
         depends_on("pexsi+fortran")
         depends_on("superlu-dist+cuda", when="+cuda")
         depends_on("superlu-dist~cuda", when="~cuda")
+        conflicts("^pexsi@2:", when="@:2.11")
     with when("+use_external_omm"):
         depends_on("omm")
         depends_on("matrix-switch")  # Direct dependency
+    with when("+dlaf"):
+        depends_on("dla-future-fortran")
+        conflicts("dla-future~cuda", when="+cuda")
+        conflicts("dla-future+cuda", when="~cuda")
 
     def cmake_args(self):
         libs_names = ["scalapack", "lapack", "blas"]
@@ -114,6 +126,8 @@ def cmake_args(self):
         if self.spec.satisfies("+use_external_omm"):
             libs_names.append("omm")
             libs_names.append("matrix-switch")
+        if self.spec.satisfies("+dlaf"):
+            libs_names.append("dla-future-fortran")
 
         lib_paths, inc_paths, libs = [], [], []
         for lib in libs_names:
@@ -140,6 +154,7 @@ def cmake_args(self):
             self.define_from_variant("ADD_UNDERSCORE", "add_underscore"),
             self.define_from_variant("ENABLE_PEXSI", "enable_pexsi"),
             self.define_from_variant("ENABLE_SIPS", "enable_sips"),
+            self.define_from_variant("ENABLE_DLAF", "dlaf"),
             self.define_from_variant("USE_EXTERNAL_ELPA", "use_external_elpa"),
             self.define_from_variant("USE_EXTERNAL_NTPOLY", "use_external_ntpoly"),
             self.define_from_variant("USE_EXTERNAL_OMM", "use_external_omm"),
@@ -161,6 +176,10 @@ def cmake_args(self):
         if self.spec.variants["elpa2_kernel"].value != "none":
             args.append(self.define_from_variant("ELPA2_KERNEL", "elpa2_kernel"))
 
+        if self.spec.satisfies("^elpa+cuda"):
+            elpa_gpu_string = "nvidia-gpu" if self.spec.satisfies("^elpa@2021:") else "gpu"
+            args.append(self.define(ELSI_ELPA_GPU_STRING, elpa_gpu_string))
+
         args.append(self.define("INC_PATHS", ";".join(set(inc_paths))))
 
         # Only when using fujitsu compiler