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diff --git a/var/spack/repos/builtin/packages/vapor/package.py b/var/spack/repos/builtin/packages/vapor/package.py
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+++ b/var/spack/repos/builtin/packages/vapor/package.py
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+# Copyright 2013-2023 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+
+import re
+
+from spack.package import *
+
+
+class Vapor(CMakePackage):
+    """VAPOR is the Visualization and Analysis Platform for Ocean,
+    Atmosphere, and Solar Researchers. VAPOR provides an interactive 3D
+    visualization environment that can also produce animations and
+    still frame images.
+    """
+
+    homepage = "https://www.vapor.ucar.edu"
+    url = "https://github.com/NCAR/VAPOR/archive/refs/tags/v3.9.0.tar.gz"
+    git = "https://github.com/NCAR/VAPOR.git"
+
+    maintainers("vanderwb")
+
+    version("main", branch="main")
+    version(
+        "3.9.0",
+        sha256="343ababe40b5824ef826f16c935a6dc1fb18e1a4c88ef967c8d64386f28a99a3",
+        preferred=True,
+    )
+
+    variant("doc", default=True, description="Build docs using Doxygen")
+    variant("ospray", default=False, description="Enable OSPRay raytracing")
+
+    depends_on("cmake@3.17:", type="build")
+    depends_on("python+ssl", type="build")
+    depends_on("py-numpy@1.21", type="build")
+    depends_on("py-scipy", type="build")
+    depends_on("py-matplotlib", type="build")
+
+    depends_on("zlib-api")
+    depends_on("gl")
+
+    depends_on("xz")
+    depends_on("openssl")
+    depends_on("expat")
+    depends_on("curl")
+    depends_on("mesa-glu")
+    depends_on("libxtst")
+    depends_on("libxcb")
+    depends_on("xcb-util")
+    depends_on("libxkbcommon")
+    depends_on("libpng")
+    depends_on("assimp")
+    depends_on("netcdf-c~dap~byterange")
+    depends_on("udunits")
+    depends_on("freetype")
+    depends_on("proj@:7")
+    depends_on("libgeotiff")
+    depends_on("glm")
+    depends_on("qt+opengl+dbus@5")
+
+    depends_on("ospray~mpi", when="+ospray")
+    depends_on("doxygen", when="+doc")
+
+    # These images are required but not provided by the source
+    resource(
+        name="map-images",
+        url="https://stratus.ucar.edu/vapor-images/2023-Jun-images.tar.xz",
+        sha256="3f0c6d40446abdb16d5aaaa314349a140e497b3be6f4971394b3e78f22d47c7d",
+        placement="share/extras/images",
+    )
+
+    def cmake_args(self):
+        spec = self.spec
+        pyvers = spec["python"].version.up_to(2)
+        pypath = "{}/python{}".format(spec.prefix.lib, pyvers)
+
+        args = [
+            self.define_from_variant("BUILD_OSP", "ospray"),
+            self.define_from_variant("BUILD_DOC", "doc"),
+            self.define("BUILD_PYTHON", False),
+            self.define("THIRD_PARTY_DIR", spec.prefix),
+            self.define("THIRD_PARTY_LIB_DIR", spec.prefix.lib),
+            self.define("THIRD_PARTY_INC_DIR", spec["python"].prefix.include),
+            self.define("PYTHONVERSION", pyvers),
+            self.define("PYTHONDIR", spec.prefix),
+            self.define("PYTHONPATH", pypath),
+            self.define("NUMPY_INCLUDE_DIR", pypath + "/site-packages/numpy/core/include"),
+            self.define("MAP_IMAGES_PATH", "extras/images"),
+        ]
+
+        return args
+
+    # VAPOR depends on custom version of GeometryEngine that is
+    # packaged with the source code - need to extract and move
+    @run_before("cmake")
+    def extract_gte(self):
+        unzip = which("unzip")
+
+        with working_dir("buildutils"):
+            unzip("GTE.zip")
+            move("GTE", "../include")
+
+    # Build will use these optional site defaults which aren't
+    # generally applicable to other sites
+    @run_before("cmake")
+    def clean_local_refs(self):
+        force_remove("site_files/site.NCAR")
+
+    # Vapor wants all of the Python packages in its build path. This
+    # somewhat objectionable code copies packages to the tree. It also
+    # copies the Python library so that the site-library is found.
+    @run_before("cmake")
+    def copy_python_library(self):
+        spec = self.spec
+        mkdirp(spec.prefix.lib)
+        pp = re.compile("py-[a-z0-9-]*")
+
+        for pydep in ["python"] + pp.findall(str(spec)):
+            install_tree(spec[pydep].prefix.lib, spec.prefix.lib)
+
+    # The documentation will not be built without this target (though
+    # it will try to install!)
+    @property
+    def build_targets(self):
+        targets = []
+
+        if "+doc" in self.spec:
+            targets.append("doc")
+
+        return targets + ["all"]