spack: Add package (#25979)

* Make python 2 use 'from __future__ import absolute_import' to allow import spack.pkgkit

* Add Spack

* Improve ranges

lib/spack/spack/repo.py

@@ -78,7 +78,7 @@ def get_full_namespace(namespace):
 #:
 #: TODO: At some point in the future, consider removing ``from spack import *``
 #: TODO: from packages and shifting to from ``spack.pkgkit import *``
-_package_prepend = 'from spack.pkgkit import *'
+_package_prepend = 'from __future__ import absolute_import; from spack.pkgkit import *'
 
 
 def autospec(function):

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

@@ -0,0 +1,92 @@
+# Copyright 2013-2021 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)
+
+from spack import *
+
+
+class Spack(Package):
+    """
+    Spack is a multi-platform package manager that builds and installs multiple
+    versions and configurations of software. It works on Linux, macOS, and many
+    supercomputers. Spack is non-destructive: installing a new version of a
+    package does not break existing installations, so many configurations of
+    the same package can coexist.
+    """
+
+    homepage = "https://spack.io/"
+    git      = "https://github.com/spack/spack.git"
+    url      = "https://github.com/spack/spack/releases/download/v0.16.2/spack-0.16.2.tar.gz"
+    maintainers = ['haampie']
+
+    version('develop', branch='develop')
+    version('0.16.3', sha256='26636a2e2cc066184f12651ac6949f978fc041990dba73934960a4c9c1ea383d')
+    version('0.16.2', sha256='ed3e5d479732b0ba82489435b4e0f9088571604e789f7ab9bc5ce89030793350')
+    version('0.16.1', sha256='8d893036b24d9ee0feee41ac33dd66e4fc68d392918f346f8a7a36a69c567567')
+    version('0.16.0', sha256='064b2532c70916c7684d4c7c973416ac32dd2ea15f5c392654c75258bfc8c6c2')
+
+    variant('development_tools', default=True, description='Build development dependencies')
+
+    # Python (with spack python -i ipython support)
+    depends_on('python', type='run')
+    depends_on('py-ipython', type='run')
+
+    # Concretizer
+    depends_on('clingo-bootstrap@spack', type='run')
+
+    # Archives
+    depends_on('bzip2', type='run')
+    depends_on('gzip', type='run')
+    depends_on('tar', type='run')
+    depends_on('unzip', type='run')
+    depends_on('xz', type='run')
+    depends_on('zstd +programs', type='run')
+
+    # Build tools
+    depends_on('bash', type='run')
+    depends_on('file', type='run')
+    depends_on('gmake', type='run')
+    depends_on('patch', type='run')
+    depends_on('ccache', type='run')
+
+    # Fetchers
+    depends_on('curl', type='run')
+    depends_on('git', type='run')
+    depends_on('mercurial', type='run')
+    depends_on('subversion', type='run')
+
+    # Buildcache
+    # We just need the 'strings' executable, we don't want to install
+    # binutil's linkers.
+    depends_on('binutils~plugins~gold~libiberty~nls~headers~lto~ld~gas~interwork', type='run')
+    depends_on('gnupg', type='run')
+    depends_on('patchelf', type='run', when='platform=linux')
+    depends_on('patchelf', type='run', when='platform=cray')
+    depends_on('py-boto3', type='run')
+
+    # See https://github.com/spack/spack/pull/24686
+    # and #25595, #25726, #25853, #25923, #25924 upstream in python/cpython
+    with when('@:0.16.2'):
+        conflicts('python@3.10:')
+        conflicts('python@3.9.6:3.9')
+        conflicts('python@3.8.11:3.8')
+        conflicts('python@3.7.11:3.7')
+        conflicts('python@3.6.14:3.6')
+
+    # Development tools
+    with when('+development_tools'):
+        depends_on('py-isort@4.3.5:', type='run')
+        depends_on('py-mypy@0.900:', type='run')
+        depends_on('py-black', type='run')
+        depends_on('py-flake8', type='run')
+        depends_on('py-sphinx@3.4:4.1.1,4.1.3:', type='run')
+        depends_on('py-sphinxcontrib-programoutput', type='run')
+        depends_on('py-sphinx-rtd-theme', type='run')
+        depends_on('graphviz', type='run')
+
+    def setup_run_environment(self, env):
+        env.set('SPACK_PYTHON', self.spec['python'].command.path)
+
+    def install(self, spec, prefix):
+        install_tree(self.stage.source_path, self.prefix)