Rewrite compiler installation

- install intel compiler using on toolchain gcc
- load compiler before searching (avoids problems with oneapi v2 layout)
- disable updates in compilers.yaml

src/mpsd_software_manager/spack.py

@@ -588,7 +588,7 @@ def install_toolchain_compiler(spack_environment: str) -> dict[str, dict[str, st
                 gcc_package = line.split('"')[1]
         compilers["default"] = {
             "name": intel_compiler,
-            "package": f"{intel_package}%{Config().system_compiler}",
+            "package": f"{intel_package}%{gcc_package}",
         }
         compilers["fallback"] = {
             "name": gcc_package,
@@ -598,15 +598,15 @@ def install_toolchain_compiler(spack_environment: str) -> dict[str, dict[str, st
     logger.debug("Required toolchain compiler: %s", compilers)
 
     for compiler_definition in compilers.values():
-        spack_install_package(compiler_definition["package"])
-        compiler_path = spack(
-            f"location -i {compiler_definition['package']}"
-        ).stdout.strip()
+        compiler_package = compiler_definition["package"]
+        spack_install_package(compiler_package)
         logger.debug(
-            spack(f"compiler find --scope site {compiler_path}").stdout.strip()
+            spack(
+                f"load {compiler_package} && spack compiler find --scope site"
+            ).stdout.strip()
         )
 
-    if len(compilers) == 2:
+    if False:  # len(compilers) == 2:
         gcc = compilers["fallback"]
         intel = compilers["default"]
         arch_tag = platform.machine()