pressio: new package (#49592)

* pressio: add packages for pressio, pressio-ops, and pressio-log

* pressio: use symlinks for pressio-ops/log; specify compatible versions

* pressio: refactor supported versions, update pressio-ops to use main branch

* pressio: update package after renaming repository to pressio-rom

* pressio: remove unneeded if statement

---------

Co-authored-by: Caleb Schilly <cwschilly@gmail.com>

var/spack/repos/builtin/packages/pressio-log/package.py

@@ -0,0 +1,25 @@
+# Copyright Spack Project Developers. See COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PressioLog(Package):
+    """
+    pressio-log is a header-only logging library designed
+    for use with Pressio repositories.
+    """
+
+    homepage = "https://github.com/Pressio/pressio-log/blob/main/README.md"
+    git = "https://github.com/pressio/pressio-log.git"
+
+    license("BSD-3-Clause")
+
+    maintainers("fnrizzi", "cwschilly")
+
+    version("main", branch="main")
+    version("0.15.0", branch="0.15.0")
+
+    def install(self, spec, prefix):
+        install_tree("include", prefix.include)

var/spack/repos/builtin/packages/pressio-ops/package.py

@@ -0,0 +1,25 @@
+# Copyright Spack Project Developers. See COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+
+
+class PressioOps(Package):
+    """
+    pressio-ops is a header-only library containing
+    essential operations for the Pressio ecosystem.
+    """
+
+    homepage = "https://pressio.github.io/pressio-ops"
+    git = "https://github.com/pressio/pressio-ops.git"
+
+    license("BSD-3-Clause")
+
+    maintainers("fnrizzi", "cwschilly")
+
+    version("main", branch="main")
+    version("0.15.0", branch="0.15.0")
+
+    def install(self, spec, prefix):
+        install_tree("include", prefix.include)

var/spack/repos/builtin/packages/pressio-rom/package.py

@@ -0,0 +1,49 @@
+# Copyright Spack Project Developers. See COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+import os
+from os.path import join as pjoin
+
+from spack.package import *
+
+
+class PressioRom(Package):
+    """
+    Pressio is an ecosystem for developing, applying and
+    using projection-based model reduction (pROM) methods.
+    A key goal is to mitigate the intrusive nature of pROMs
+    for large-scale codes, and providing a framework to
+    foster research of new ideas as well as incentivize broader
+    adoption and usability.
+    """
+
+    homepage = "https://pressio.github.io/pressio-rom/"
+    git = "https://github.com/pressio/pressio-rom.git"
+
+    license("BSD-3-Clause")
+    maintainers("fnrizzi", "cwschilly")
+
+    supported_versions = ["main", "0.15.0"]
+
+    # For now, assume each repo is compatible only with the same version of the other repos
+    for supported_version in supported_versions:
+        version(supported_version, branch=supported_version)
+        depends_on(f"pressio-ops@{supported_version}", type="build", when=f"@{supported_version}")
+        depends_on(f"pressio-log@{supported_version}", type="build", when=f"@{supported_version}")
+
+    def install(self, spec, prefix):
+        include_dir = prefix.include
+        install_tree("include", include_dir)
+
+        # Add symlinks to pressio-ops headers inside main include/pressio directory
+        pressio_includes = pjoin(include_dir, "pressio")
+        ops_include = pjoin(self.spec["pressio-ops"].prefix.include, "pressio")
+        for item in os.listdir(ops_include):
+            src_item = pjoin(ops_include, item)
+            dest_item = pjoin(pressio_includes, item)
+            symlink(src_item, dest_item, target_is_directory=os.path.isdir(src_item))
+
+        # Add symlink to pressio-log headers in include/pressio-log
+        log_include = pjoin(self.spec["pressio-log"].prefix.include, "pressio-log")
+        symlink(log_include, pjoin(include_dir, "pressio-log"), target_is_directory=True)