Make boost minimal and composable (Original PR#22303) (#28623)

* Make boost composable

Currently Boost enables a few components through variants by default,
which means that if you want to use only what you need and no more, you
have to explicitly disable these variants, leading to concretization
errors whenever a second package explicitly needs those components.

For instance if package A only needs `+component_a` it might depend on
`boost +component_a ~component_b`. And if packge B only needs
`+component_b` it might depend on `boost ~component_a +component_b`. If
package C now depends on both A and B, this leads to unsatisfiable
variants and hence a concretization error.

However, if we default to disabling all components, package A can simply
depend on `boost +component_a` and package B on `boost +component_b` and
package C will concretize to depending on `boost +component_a
+component_b`, and whatever you install, you get the bare minimum.

* Fix style

* Added composable boost dependencies for folly

* fixing akantu merge issue

* hpctoolkit boost dependencies already defined

* Fix Styles

* Fixup style once more

* Adding isort fix

* isort one more time

* Fix for package audit issue

Co-authored-by: Harmen Stoppels <harmenstoppels@gmail.com>
Co-authored-by: Ryan O'Malley <rd.omalley@comcast.net>

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Akantu(CMakePackage):
@@ -30,7 +31,7 @@ class Akantu(CMakePackage):
             description="Activates python bindings")
 
     depends_on('boost@:1.66', when='@:3.0')
-    depends_on('boost')
+    depends_on(Boost.with_default_variants)
     depends_on('lapack')
     depends_on('cmake@3.5.1:', type='build')
     depends_on('python', when='+python', type=('build', 'run'))

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

@@ -3,6 +3,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Amp(CMakePackage):
@@ -34,7 +35,11 @@ class Amp(CMakePackage):
     # Everything should be compiled position independent (-fpic)
     depends_on('blas')
     depends_on('lapack')
-    depends_on('boost', when='+boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+boost')
     depends_on('hdf5', when='+hdf5')
     depends_on('hypre', when='+hypre')
     depends_on('libmesh', when='+libmesh')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Aoflagger(CMakePackage):
@@ -18,6 +19,11 @@ class Aoflagger(CMakePackage):
     depends_on('casacore+python~fftpack@1.10:')
     depends_on('fftw~mpi@3.0:')
     depends_on('boost+python@:1.66.99')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('libxml2')
     depends_on('lapack')
     depends_on('cfitsio')

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

@@ -6,6 +6,7 @@
 import sys
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Apex(CMakePackage):
@@ -65,6 +66,11 @@ class Apex(CMakePackage):
     depends_on('hip', when='+hip')
     depends_on('roctracer-dev', when='+hip')
     depends_on('rocm-smi-lib', when='+hip')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+boost')
     depends_on('boost@1.54:', when='+boost')
 
     # Conflicts

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Arrayfire(CMakePackage, CudaPackage):
@@ -24,6 +25,11 @@ class Arrayfire(CMakePackage, CudaPackage):
     variant('opencl', default=False, description='Enable OpenCL backend')
 
     depends_on('boost@1.65:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('fftw-api@3:')
     depends_on('blas')
     depends_on('cuda@7.5:', when='+cuda')

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

@@ -3,6 +3,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Arrow(CMakePackage, CudaPackage):
@@ -26,6 +27,11 @@ class Arrow(CMakePackage, CudaPackage):
     version('0.8.0', sha256='c61a60c298c30546fc0b418a35be66ef330fb81b06c49928acca7f1a34671d54')
 
     depends_on('boost@1.60:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cmake@3.2.0:', type='build')
     depends_on('flatbuffers build_type=Release')  # only Release contains flatc
     depends_on('python', when='+python')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Aspcud(CMakePackage):
@@ -22,6 +23,11 @@ class Aspcud(CMakePackage):
     version('1.9.4', sha256='3645f08b079e1cc80e24cd2d7ae5172a52476d84e3ec5e6a6c0034492a6ea885')
 
     depends_on('boost@1.74:', type=('build'), when='@1.9.5:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type=('build'), when='@1.9.5:')
     depends_on('cmake', type=('build'))
     depends_on('re2c', type=('build'))
     depends_on('clingo')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Assimp(CMakePackage):
@@ -33,7 +34,10 @@ class Assimp(CMakePackage):
 
     depends_on('pkgconfig', type='build')
     depends_on('zlib')
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
 
     def patch(self):
         filter_file('-Werror', '', 'code/CMakeLists.txt')

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

@@ -6,6 +6,7 @@
 import glob
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Augustus(MakefilePackage):
@@ -29,7 +30,11 @@ class Augustus(MakefilePackage):
     depends_on('python', when='@3.3.1:', type=('build', 'run'))
     depends_on('bamtools')
     depends_on('gsl')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('zlib')
     depends_on('htslib')
     depends_on('bcftools')

var/spack/repos/builtin/packages/autodock-vina/package.py

@@ -3,9 +3,11 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+
 import sys
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class AutodockVina(MakefilePackage):
@@ -18,6 +20,11 @@ class AutodockVina(MakefilePackage):
 
     depends_on('boost@1.65.0')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # Replacing depecrated function call of boost with current function call
     patch('main.patch')
     patch('split.patch')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Automaded(CMakePackage):
@@ -24,7 +25,11 @@ class Automaded(CMakePackage):
     version('1.0', sha256='600740cdd594cc6968c7bcb285d0829eb0ddbd5597c32c06c6ae5d9929a2625d')
 
     depends_on('mpi')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('callpath')
     depends_on('cmake@2.8:', type='build')
 

var/spack/repos/builtin/packages/bcl2fastq2/package.py

@@ -9,6 +9,7 @@
 import llnl.util.tty as tty
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 # This application uses cmake to build, but they wrap it with a
@@ -28,6 +29,11 @@ class Bcl2fastq2(Package):
               msg='malloc.h/etc requirements break build on macs')
 
     depends_on('boost@1.54.0:1.55')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cmake@2.8.9:', type='build')
     depends_on('libxml2@2.7.8')
     depends_on('libxslt@1.1.26~crypto')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Biobloom(AutotoolsPackage):
@@ -15,7 +16,10 @@ class Biobloom(AutotoolsPackage):
 
     version('2.2.0', sha256='5d09f8690f0b6402f967ac09c5b0f769961f3fe3791000f8f73af6af7324f02c')
 
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('sdsl-lite')
     depends_on('sparsehash')
     depends_on('zlib')

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Blasr(Package):
@@ -20,7 +21,11 @@ class Blasr(Package):
     depends_on('hdf5+cxx@1.8.12:1.8')
     depends_on('htslib')
     depends_on('zlib')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('pbbam')
     depends_on('blasr-libcpp')
     depends_on('python', type='build')

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

@@ -9,6 +9,7 @@
 
 from spack import *
 from spack.package_test import compare_output
+from spack.pkg.builtin.boost import Boost
 from spack.util.executable import Executable
 
 
@@ -74,6 +75,11 @@ class Bohrium(CMakePackage, CudaPackage):
     depends_on('cmake@2.8:', type="build")
     depends_on('boost+system+serialization+filesystem+regex')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # cuda dependencies managed by CudaPackage class
     depends_on('opencl', when="+opencl")
 

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

@@ -79,26 +79,10 @@ class Boost(Package):
     version('1.34.1', sha256='0f866c75b025a4f1340117a106595cc0675f48ba1e5a9b5c221ec7f19e96ec4c')
     version('1.34.0', sha256='455cb8fa41b759272768257c2e7bdc5c47ec113245dfa533f275e787a855efd2')
 
-    default_install_libs = set(['atomic',
-                                'chrono',
-                                'date_time',
-                                'exception',
-                                'filesystem',
-                                'graph',
-                                'iostreams',
-                                'locale',
-                                'log',
-                                'math',
-                                'program_options',
-                                'random',
-                                'regex',
-                                'serialization',
-                                'signals',
-                                'system',
-                                'test',
-                                'thread',
-                                'timer',
-                                'wave'])
+    with_default_variants = ("boost+atomic+chrono+date_time+exception+filesystem"
+                             "+graph+iostreams+locale+log+math+program_options"
+                             "+random+regex+serialization+signals+system+test"
+                             "+thread+timer+wave")
 
     # mpi/python are not installed by default because they pull in many
     # dependencies and/or because there is a great deal of customization
@@ -107,13 +91,37 @@ class Boost(Package):
     # Boost.Container can be both header-only and compiled. '+container'
     # indicates the compiled version which requires Extended Allocator
     # support. The header-only library is installed when no variant is given.
-    default_noinstall_libs\
-        = set(['container', 'context', 'coroutine', 'fiber', 'mpi', 'python'])
-
-    all_libs = default_install_libs | default_noinstall_libs
+    all_libs = [
+        'atomic',
+        'chrono',
+        'container',
+        'context',
+        'coroutine',
+        'date_time',
+        'exception',
+        'fiber',
+        'filesystem',
+        'graph',
+        'iostreams',
+        'locale',
+        'log',
+        'math',
+        'mpi',
+        'program_options',
+        'python',
+        'random',
+        'regex',
+        'serialization',
+        'signals',
+        'system',
+        'test',
+        'thread',
+        'timer',
+        'wave'
+    ]
 
     for lib in all_libs:
-        variant(lib, default=(lib not in default_noinstall_libs),
+        variant(lib, default=False,
                 description="Compile with {0} library".format(lib))
 
     @property

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Branson(CMakePackage):
@@ -25,7 +26,11 @@ class Branson(CMakePackage):
     version('0.8',  sha256='85ffee110f89be00c37798700508b66b0d15de1d98c54328b6d02a9eb2cf1cb8')
 
     depends_on('mpi@2:')
-    depends_on('boost', when='@:0.81')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='@:0.81')
     depends_on('metis')
     depends_on('parmetis', when='@:0.81')
 

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

@@ -6,6 +6,7 @@
 from os import symlink
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Bridger(MakefilePackage, SourceforgePackage):
@@ -17,7 +18,10 @@ class Bridger(MakefilePackage, SourceforgePackage):
 
     version('2014-12-01', sha256='8fbec8603ea8ad2162cbd0c658e4e0a4af6453bdb53310b4b7e0d112e40b5737')
 
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('perl', type='run')
 
     def flag_handler(self, name, flags):

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Caffe(CMakePackage, CudaPackage):
@@ -33,8 +34,12 @@ class Caffe(CMakePackage, CudaPackage):
     variant('matlab', default=False,
             description='Build Matlab wrapper')
 
-    depends_on('boost')
     depends_on('boost +python', when='+python')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+python')
     depends_on('cuda', when='+cuda')
     depends_on('blas')
     depends_on('protobuf@:3.17')

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Cantera(SConsPackage):
@@ -31,7 +32,11 @@ class Cantera(SConsPackage):
     depends_on('fmt@3.0.0:3.0.2', when='@2.3.0:')
     depends_on('googletest+gmock', when='@2.3.0:')
     depends_on('eigen',           when='@2.3.0:')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('sundials@:3.1.2+lapack', when='+sundials')  # must be compiled with -fPIC
     depends_on('blas')
     depends_on('lapack')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Canu(MakefilePackage):
@@ -25,6 +26,11 @@ class Canu(MakefilePackage):
     # build fail when using boost@1.71.0:1.73.0 by canu@1.8:2.0
     depends_on('boost@:1.70.0')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     build_directory = 'src'
     build_targets = ['clean']
 

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Casacore(CMakePackage):
@@ -60,6 +61,11 @@ class Casacore(CMakePackage):
     depends_on('mpi', when='+adios2')
     depends_on('python@2.6:', when='+python')
     depends_on('boost+python', when='+python')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+python')
     depends_on('py-numpy', when='+python')
 
     def cmake_args(self):

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Casper(MakefilePackage):
@@ -18,7 +19,11 @@ class Casper(MakefilePackage):
     version('0.8.2', sha256='3005e165cebf8ce4e12815b7660a833e0733441b5c7e5ecbfdccef7414b0c914')
 
     depends_on('jellyfish@2.2.3:')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
 
     conflicts('%gcc@7.1.0')
 

var/spack/repos/builtin/packages/cbtf-argonavis-gui/package.py

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class CbtfArgonavisGui(QMakePackage):
@@ -24,6 +25,11 @@ class CbtfArgonavisGui(QMakePackage):
 
     depends_on("boost@1.66.0:1.69.0")
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # For MRNet
     depends_on("mrnet@5.0.1-3:+lwthreads", when='@develop')
     depends_on("mrnet@5.0.1-3+lwthreads", when='@1.3.0.0:9999')

var/spack/repos/builtin/packages/cbtf-argonavis/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class CbtfArgonavis(CMakePackage):
@@ -38,6 +39,11 @@ class CbtfArgonavis(CMakePackage):
     # For boost
     depends_on("boost@1.70.0:")
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # For MRNet
     depends_on("mrnet@5.0.1-3:+lwthreads", when='@develop', type=('build', 'link', 'run'))
     depends_on("mrnet@5.0.1-3+lwthreads", when='@1.9.3:9999', type=('build', 'link', 'run'))

var/spack/repos/builtin/packages/cbtf-krell/package.py

@@ -6,6 +6,7 @@
 import spack
 import spack.store
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class CbtfKrell(CMakePackage):
@@ -55,6 +56,11 @@ class CbtfKrell(CMakePackage):
     # For boost
     depends_on("boost@1.70.0:")
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # For Dyninst
     depends_on("dyninst@10.1.0", when='@develop')
     depends_on("dyninst@10.1.0", when='@1.9.3:9999')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Cbtf(CMakePackage):
@@ -38,6 +39,11 @@ class Cbtf(CMakePackage):
 
     depends_on("boost@1.70.0:")
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # For MRNet
     depends_on("mrnet@5.0.1-3:+lwthreads", when='@develop')
     depends_on("mrnet@5.0.1-3+lwthreads", when='@1.9.3:9999')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Cgal(CMakePackage):
@@ -53,6 +54,11 @@ class Cgal(CMakePackage):
 
     # Essential Third Party Libraries
     depends_on('boost+thread+system')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('gmp')
     depends_on('mpfr')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Channelflow(CMakePackage):
@@ -40,6 +41,11 @@ class Channelflow(CMakePackage):
     # Python bindings
     depends_on('boost+python', when='+python')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+python')
+
     conflicts('~mpi', when='netcdf=parallel', msg='Parallel NetCDF requires MPI')
     conflicts(
         '+mpi', when='+python',

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Chill(AutotoolsPackage):
@@ -19,6 +20,11 @@ class Chill(AutotoolsPackage):
     version('0.3', sha256='574b622368a6bfaadbe9c1fa02fabefdc6c006069246f67d299f943b7e1d8aa3')
 
     depends_on('boost@1.66.0 cxxstd=11', type='build')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type='build')
     depends_on('rose@0.9.13.0: +cxx11', type=('build', 'run'))
     depends_on('autoconf', type='build')
     depends_on('automake@1.14:',  type='build')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Cleverleaf(CMakePackage):
@@ -21,7 +22,11 @@ class Cleverleaf(CMakePackage):
 
     depends_on('samrai@3.8.0:')
     depends_on('hdf5+mpi')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cmake@3.1:', type='build')
 
     # The Fujitsu compiler requires the '--linkfortran'

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Clfft(CMakePackage):
@@ -20,6 +21,11 @@ class Clfft(CMakePackage):
     depends_on('opencl@1.2:')
     depends_on('boost@1.33.0:', when='+client')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+client')
+
     patch('https://github.com/clMathLibraries/clFFT/commit/eea7dbc888367b8dbea602ba539eb1a9cbc118d9.patch',
           sha256='3148d5937077def301b30b913bc2437df869204fca1de4385ccd46e3b98b13aa', when='@2.12.2')
 

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Cntk(Package):
@@ -31,7 +32,10 @@ class Cntk(Package):
     depends_on('libzip')
     depends_on('openblas')
     depends_on('mpi')
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('protobuf@3.10')
     # CNTK depends on kaldi@c02e8.
     # See https://github.com/Microsoft/CNTK/blob/master/Tools/docker/CNTK-CPUOnly-Image/Dockerfile#L105-L125

var/spack/repos/builtin/packages/coin3d/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Coin3d(AutotoolsPackage):
@@ -18,6 +19,11 @@ class Coin3d(AutotoolsPackage):
     version('2.0.0', sha256='6d26435aa962d085b7accd306a0b478069a7de1bc5ca24e22344971852dd097c')
 
     depends_on('boost@1.45.0:', type='build')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type='build')
     depends_on('doxygen', when='+html', type='build')
     depends_on('perl', when='+html', type='build')
     depends_on('glu', type='link')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Cpprestsdk(CMakePackage):
@@ -19,6 +20,11 @@ class Cpprestsdk(CMakePackage):
     version('2.9.1', sha256='537358760acd782f4d2ed3a85d92247b4fc423aff9c85347dc31dbb0ab9bab16')
 
     depends_on('boost@:1.69.0')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('openssl')
 
     # Ref: https://github.com/microsoft/cpprestsdk/commit/f9f518e4ad84577eb684ad8235181e4495299af4

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dakota(CMakePackage):
@@ -46,6 +47,11 @@ class Dakota(CMakePackage):
     depends_on('python')
     depends_on('perl-data-dumper', type='build', when='@6.12:')
     depends_on('boost@:1.68.0', when='@:6.12')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='@:6.12')
     depends_on('cmake@2.8.9:', type='build')
 
     def cmake_args(self):

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Damaris(CMakePackage):
@@ -29,6 +30,11 @@ class Damaris(CMakePackage):
     depends_on('mpi')
     depends_on('cmake@3.18.0:', type=('build'))
     depends_on('boost +thread+log+filesystem+date_time @1.67:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('xsd')
     depends_on('xerces-c')
     depends_on('hdf5@1.8.20:', when='+hdf5')

var/spack/repos/builtin/packages/dbow2/package.py

@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+from spack.pkg.builtin.boost import Boost
+
 
 class Dbow2(CMakePackage):
     """DBoW2 is an improved version of the DBow library, an open source C++
@@ -16,7 +18,10 @@ class Dbow2(CMakePackage):
     version('shinsumicco', git='https://github.com/shinsumicco/DBoW2.git', branch='master')
 
     depends_on('cmake@3.0:', type='build')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('opencv+calib3d+features2d+highgui+imgproc')
-    depends_on('boost')
     depends_on('dlib')
     depends_on('eigen', type='link')

var/spack/repos/builtin/packages/dd4hep/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dd4hep(CMakePackage):
@@ -80,8 +81,13 @@ class Dd4hep(CMakePackage):
     depends_on('cmake @3.12:', type='build')
     depends_on('ninja', type='build')
     depends_on('boost @1.49:')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('root @6.08: +gdml +math +python')
     depends_on('root @6.08: +gdml +math +python +x +opengl', when="+ddeve")
+
     extends('python')
     depends_on('xerces-c', when='+xercesc')
     depends_on('geant4@10.2.2:', when='+ddg4')

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dealii(CMakePackage, CudaPackage):
@@ -150,6 +151,11 @@ class Dealii(CMakePackage, CudaPackage):
     depends_on('boost cxxstd=14', when='cxxstd=14')
     depends_on('boost cxxstd=17', when='cxxstd=17')
     depends_on('bzip2',           when='@:8')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('lapack')
     depends_on('ninja',           type='build')
     depends_on('suite-sparse')

var/spack/repos/builtin/packages/delly2/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Delly2(MakefilePackage):
@@ -22,6 +23,10 @@ class Delly2(MakefilePackage):
 
     depends_on('htslib', type=('build', 'link'))
     depends_on('boost', type=('build', 'link'))
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('bcftools', type='run')
 
     def edit(self, spec, prefix):

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Denovogear(CMakePackage):
@@ -20,6 +21,11 @@ class Denovogear(CMakePackage):
 
     depends_on('cmake@3.1:', type=('build'))
     depends_on('boost@1.47:1.60', type=('build'))
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type=('build'))
     depends_on('htslib@1.2:', type=('build'))
     depends_on('eigen', type=('build'))
     depends_on('zlib', type=('link'))

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dimemas(AutotoolsPackage):
@@ -23,6 +24,11 @@ class Dimemas(AutotoolsPackage):
     depends_on('flex', type=('build', 'link', 'run'))
     depends_on('boost@1.65.0+program_options cxxstd=11', type=('build', 'link'))
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type=('build', 'link'))
+
     def autoreconf(self, spec, prefix):
         autoreconf('--install', '--verbose', '--force')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dire(Package):
@@ -23,7 +24,11 @@ class Dire(Package):
     version('2.004', sha256='8cc1213b58fec744fdaa50834560a14b141de99efb2c3e3d3d47f3d6d84b179f')
 
     depends_on('zlib')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('lhapdf')
     depends_on('hepmc')
     depends_on('pythia8@8.226:')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dssp(AutotoolsPackage):
@@ -21,6 +22,11 @@ class Dssp(AutotoolsPackage):
     depends_on('m4',       type='build')
     depends_on('boost@1.48:')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # pdb data download.
     # 1ALK.pdb - PDB (protein data bank) : https://www.rcsb.org/
     resource(

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Dysco(CMakePackage):
@@ -17,3 +18,8 @@ class Dysco(CMakePackage):
     depends_on('casacore')
     depends_on('gsl')
     depends_on('boost+date_time+python')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Ecflow(CMakePackage):
@@ -30,6 +31,11 @@ class Ecflow(CMakePackage):
     # Boost-1.7X release not working well on serialization
     depends_on('boost@1.53:1.69+python')
     depends_on('boost@1.53:1.69+pic', when='+static_boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('qt@5:', when='+ui')
     depends_on('cmake@2.12.11:', type='build')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Erne(AutotoolsPackage):
@@ -18,6 +19,11 @@ class Erne(AutotoolsPackage):
             description='Build with OpenMPI support')
 
     depends_on('boost@1.40.0:', type=('build', 'link', 'run'))
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type=('build', 'link', 'run'))
     depends_on('openmpi', type=('build', 'run'), when='+mpi')
 
     def configure_args(self):

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Ethminer(CMakePackage):
@@ -20,7 +21,11 @@ class Ethminer(CMakePackage):
             description='Build with Stratum protocol support.')
 
     depends_on('python')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('json-c')
     depends_on('curl')
     depends_on('zlib')

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

@@ -7,6 +7,7 @@
 import os.path
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Express(CMakePackage):
@@ -21,7 +22,10 @@ class Express(CMakePackage):
     version('1.5.2', sha256='25a63cca3dac6bd0daf04d2f0b2275e47d2190c90522bd231b1d7a875a59a52e')
     version('1.5.1', sha256='fa3522de9cc25f1ede22fa196928912a6da2a2038681911115ec3e4da3d61293')
 
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('bamtools')
     depends_on('zlib')
 

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 # typical working line with extrae 3.0.1
 # ./configure
@@ -50,7 +51,11 @@ class Extrae(AutotoolsPackage):
 
     depends_on("mpi")
     depends_on("libunwind")
-    depends_on("boost")
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on("libdwarf")
     depends_on("papi")
     depends_on("elf", type="link")

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

@@ -6,6 +6,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Fairlogger(CMakePackage):
@@ -48,6 +49,11 @@ class Fairlogger(CMakePackage):
     depends_on('git', type='build', when='@develop')
 
     depends_on('boost', when='+pretty')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+pretty')
     conflicts('^boost@1.70:', when='^cmake@:3.14')
     depends_on('fmt@5.3.0:5', when='@1.6.0:1.6.1')
     depends_on('fmt@5.3.0:', when='@1.6.2:')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Faodel(CMakePackage):
@@ -37,6 +38,11 @@ class Faodel(CMakePackage):
 
     depends_on('mpi', when='+mpi')
     depends_on('boost@1.60.0:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cmake@3.8.0:', type='build')
     depends_on('hdf5+mpi', when='+hdf5+mpi')
     depends_on('hdf5~mpi', when='+hdf5~mpi')

var/spack/repos/builtin/packages/fenics-dolfinx/package.py

@@ -29,6 +29,7 @@ class FenicsDolfinx(CMakePackage):
     depends_on("mpi")
     depends_on("hdf5+mpi")
     depends_on("boost@1.7.0:+filesystem+program_options+timer")
+
     depends_on("petsc+mpi+shared")
     depends_on("petsc+mpi+shared@3.15.0:", when="@0.1.0")
     depends_on("scotch+mpi")

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Fenics(CMakePackage):
@@ -99,6 +100,11 @@ class Fenics(CMakePackage):
     depends_on('boost+filesystem+program_options+system+iostreams+timer+regex+chrono')
     depends_on('boost+filesystem+program_options+system+iostreams+timer+regex+chrono@1.68.0', when='@:2018')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     depends_on('mpi', when='+mpi')
     depends_on('hdf5@:1.10+hl+fortran', when='+hdf5+petsc')
     depends_on('hdf5@:1.10+hl', when='+hdf5~petsc')

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

@@ -5,6 +5,7 @@
 
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Flann(CMakePackage):
@@ -67,6 +68,11 @@ def url_for_version(self, version):
     # https://github.com/mariusmuja/flann/blob/06a49513138009d19a1f4e0ace67fbff13270c69/CMakeLists.txt#L108-L112
     depends_on("boost+mpi+system+serialization+thread", when="+mpi ^hdf5+mpi")
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when="+mpi ^hdf5+mpi")
+
     # Doc deps
     depends_on("texlive", when="+doc")
 

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

@@ -5,6 +5,7 @@
 
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Flecsale(CMakePackage):
@@ -26,6 +27,11 @@ class Flecsale(CMakePackage):
     depends_on("openssl")
     depends_on("boost~mpi", when='~mpi')
     depends_on("boost+mpi", when='+mpi')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on("exodusii~mpi", when='~mpi')
     depends_on("exodusii+mpi", when='+mpi')
 

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

@@ -3,7 +3,6 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-
 from spack import *
 
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Flecsph(CMakePackage):
@@ -22,7 +23,13 @@ class Flecsph(CMakePackage):
     variant('test', default=True, description='Adding tests')
 
     depends_on('cmake@3.15:', type='build')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('boost@1.70.0: cxxstd=17 +program_options')
+
     depends_on('mpi')
     depends_on('hdf5+hl@1.8:')
     depends_on('flecsi@1.4.2 +external_cinch backend=mpi')

var/spack/repos/builtin/packages/flux-sched/package.py

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class FluxSched(AutotoolsPackage):
@@ -39,9 +40,15 @@ class FluxSched(AutotoolsPackage):
 
     variant('cuda', default=False, description='Build dependencies with support for CUDA')
 
+    # Needs to be seen if tis is needed once we remove the default variants
     depends_on("boost+graph@1.53.0,1.59.0:")
     depends_on("py-pyyaml@3.10:", type=('build', 'run'))
     depends_on("py-jsonschema@2.3:", type=('build', 'run'))
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on("libedit")
     depends_on("libxml2@2.9.1:")
     # pin yaml-cpp to 0.6.3 due to issue #886

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

@@ -24,11 +24,13 @@ class Folly(CMakePackage):
     # CMakePackage Dependency
     depends_on('pkgconfig', type='build')
 
-    # folly requires gcc 4.9+ and a version of boost compiled with >= C++14
-    # TODO: Specify the boost components
+    # folly requires gcc 5+ and a version of boost compiled with >= C++14
     variant('cxxstd', default='14', values=('14', '17'), multi=False, description='Use the specified C++ standard when building.')
-    depends_on('boost+context+container cxxstd=14', when='cxxstd=14')
-    depends_on('boost+context+container cxxstd=17', when='cxxstd=17')
+    # Boost library dependencies:
+    # CMake threw errors when program_options and thread were not included.
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on('boost+container+context+exception+filesystem+program_options+regex+serialization+system+thread cxxstd=14', when='cxxstd=14')
+    depends_on('boost+container+context+exception+filesystem+program_options+regex+serialization+system+thread cxxstd=17', when='cxxstd=17')
 
     # required dependencies
     depends_on('gflags')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Foundationdb(CMakePackage):
@@ -24,7 +25,11 @@ class Foundationdb(CMakePackage):
 
     depends_on('cmake@3.13.0:', type='build')
     depends_on('mono')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     generator = 'Ninja'
     depends_on('ninja', type='build')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Gaudi(CMakePackage):
@@ -48,6 +49,11 @@ class Gaudi(CMakePackage):
     # These dependencies are needed for a minimal Gaudi build
     depends_on('aida')
     depends_on('boost@1.67.0: +python')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('clhep')
     depends_on('cmake', type='build')
     depends_on('cppgsl')

var/spack/repos/builtin/packages/geant4/package.py

@@ -3,6 +3,9 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+from spack import *
+from spack.pkg.builtin.boost import Boost
+
 
 class Geant4(CMakePackage):
     """Geant4 is a toolkit for the simulation of the passage of particles
@@ -105,6 +108,11 @@ class Geant4(CMakePackage):
         depends_on('boost@1.70: +python cxxstd=' + std,
                    when='+python cxxstd=' + std)
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+python')
+
     # Visualization driver dependencies
     depends_on("gl", when='+opengl')
     depends_on("glu", when='+opengl')

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

@@ -38,7 +38,7 @@ class Gearshifft(CMakePackage):
 
     # depends_on C++14 compiler, e.g. GCC 5.0+
     depends_on('cmake@2.8.0:', type='build')
-    depends_on('boost@1.59.0:')
+    depends_on('boost@1.59.0:+system+test+program_options+thread')
     depends_on('cuda@8.0:', when='+cufft')
     depends_on('opencl@1.2:', when='+clfft')
     depends_on('clfft@2.12.0:', when='+clfft')

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

@@ -4,6 +4,9 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 
+from spack.pkg.builtin.boost import Boost
+
+
 class Gnuradio(CMakePackage):
     """GNU Radio is a free & open-source software development toolkit
     that provides signal processing blocks to implement software
@@ -30,6 +33,11 @@ class Gnuradio(CMakePackage):
     depends_on('log4cpp@1.0:')
     # https://github.com/gnuradio/gnuradio/pull/3566
     depends_on('boost@1.53:1.72')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('py-numpy', type=('build', 'run'))
     depends_on('py-click', type=('build', 'run'))
     depends_on('py-pyyaml', type=('build', 'run'))

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Gource(AutotoolsPackage):
@@ -23,6 +24,11 @@ class Gource(AutotoolsPackage):
     depends_on('freetype@2.0:')
     depends_on('pcre')
     depends_on('boost@1.46:+filesystem+system')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('glew')
     depends_on('jpeg')
     depends_on('libpng')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Gplates(CMakePackage):
@@ -37,6 +38,10 @@ class Gplates(CMakePackage):
     # There were changes to Boost's optional in 1.61 that make the build fail.
     depends_on('boost+python@1.34:1.60')
     depends_on('python@2.0:2')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
 
     # When built in parallel, headers are not generated before they are used
     # (specifically, ViewportWindowUi.h) with the Makefiles generator.

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Graphblast(MakefilePackage, CudaPackage):
@@ -19,6 +20,11 @@ class Graphblast(MakefilePackage, CudaPackage):
 
     depends_on('boost +program_options')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     # This package is confirmed to compile with:
     #   gcc@:5.4.0,7.5.0 , boost@1.58.0:1.60.0 , cuda@9:
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Gunrock(CMakePackage, CudaPackage):
@@ -52,6 +53,11 @@ class Gunrock(CMakePackage, CudaPackage):
     depends_on('googletest', when='+google_tests')
     depends_on('lcov', when='+code_coverage')
     depends_on('boost@1.58.0:', when='+boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+boost')
     depends_on('metis', when='+metis')
 
     conflicts('cuda_arch=none', when='+cuda',

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

@@ -3,6 +3,7 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Heaptrack(CMakePackage):
@@ -16,6 +17,11 @@ class Heaptrack(CMakePackage):
     version('1.1.0', sha256='bd247ac67d1ecf023ec7e2a2888764bfc03e2f8b24876928ca6aa0cdb3a07309')
 
     depends_on('boost@1.41:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cmake@2.8.9:', type='build')
     depends_on('elfutils')
     depends_on('libunwind')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Helics(CMakePackage):
@@ -56,6 +57,11 @@ class Helics(CMakePackage):
     depends_on('git', type='build', when='@master:')
     depends_on('cmake@3.4:', type='build')
     depends_on('boost@1.70:', type='build', when='+boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type='build', when='+boost')
     depends_on('swig@3.0:', type='build', when='+swig')
 
     depends_on('libzmq@4.3:', when='+zmq')

var/spack/repos/builtin/packages/herwig3/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Herwig3(AutotoolsPackage):
@@ -23,7 +24,11 @@ class Herwig3(AutotoolsPackage):
     depends_on('lhapdf')
     depends_on('lhapdfsets')
     depends_on('thepeg@2.2.1', when='@7.2.1')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('python', type=('build', 'run'))
     depends_on('gsl')
     depends_on('fastjet')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Herwigpp(AutotoolsPackage):
@@ -19,7 +20,11 @@ class Herwigpp(AutotoolsPackage):
     patch('herwig++-2.7.1.patch', when='@2.7.1', level=0)
 
     depends_on('gsl')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('fastjet')
     depends_on('thepeg@1.9.2', when='@2.7.1')
 

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

@@ -5,6 +5,7 @@
 
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Highfive(CMakePackage):
@@ -28,6 +29,11 @@ class Highfive(CMakePackage):
     variant('mpi', default=True, description='Support MPI')
 
     depends_on('boost @1.41:', when='+boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+boost')
     depends_on('hdf5')
     depends_on('hdf5 +mpi', when='+mpi')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Hisea(MakefilePackage):
@@ -16,7 +17,10 @@ class Hisea(MakefilePackage):
     version('2017.12.26', sha256='3c6ddfb8490a327cc5f9e45f64cd4312abc6ef5719661ce8892db8a20a1e9c5e',
             url='https://github.com/lucian-ilie/HISEA/tarball/39e01e98caa0f2101da806ca59306296effe789c')
 
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
 
     def patch(self):
         if self.spec.target.family == 'aarch64':

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

@@ -7,6 +7,7 @@
 import sys
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Hpx(CMakePackage, CudaPackage, ROCmPackage):
@@ -83,7 +84,7 @@ class Hpx(CMakePackage, CudaPackage, ROCmPackage):
 
     # Other dependecies
     depends_on('hwloc')
-    depends_on('boost')
+    depends_on(Boost.with_default_variants)
     for cxxstd in cxxstds:
         depends_on(
             "boost cxxstd={0}".format(map_cxxstd(cxxstd)),

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Hssp(AutotoolsPackage):
@@ -35,6 +36,11 @@ class Hssp(AutotoolsPackage):
     depends_on('m4',       type='build')
     depends_on('boost@1.48:')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
+
     def configure_args(self):
         args = [
             "--with-boost=%s" % self.spec['boost'].prefix]

var/spack/repos/builtin/packages/hybrid-lambda/package.py

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class HybridLambda(AutotoolsPackage):
@@ -27,7 +28,11 @@ class HybridLambda(AutotoolsPackage):
     depends_on('automake', type='build')
     depends_on('libtool', type='build')
     depends_on('m4', type='build')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cppunit', type='test')
 
     build_directory = 'src'

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

@@ -6,6 +6,7 @@
 import platform
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 _versions = {
     'v5.2.1': {
@@ -27,6 +28,9 @@ class Hyperscan(CMakePackage):
         if pkg:
             version(ver, sha256=pkg[0], url=pkg[1])
 
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('pcre')
     depends_on('ragel', type='build')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Ibmisc(CMakePackage):
@@ -46,6 +47,11 @@ class Ibmisc(CMakePackage):
     depends_on('py-numpy', when='+python', type=('build', 'run'))
     depends_on('boost', when='+boost')
 
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+boost')
+
     # Build dependencies
     depends_on('doxygen', type='build')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Imp(CMakePackage):
@@ -17,5 +18,10 @@ class Imp(CMakePackage):
     depends_on('python@2.7:')
     depends_on('swig')
     depends_on('boost@1.40:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('hdf5')
     depends_on('eigen')

var/spack/repos/builtin/packages/iq-tree/package.py

@@ -5,6 +5,7 @@
 
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class IqTree(CMakePackage):
@@ -26,7 +27,10 @@ class IqTree(CMakePackage):
 
     # Depends on Eigen3 and zlib
 
-    depends_on("boost")
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on("eigen")
     depends_on("zlib")
     depends_on('mpi', when='+mpi')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Jali(CMakePackage):
@@ -32,7 +33,10 @@ class Jali(CMakePackage):
 
     depends_on('mpi')
 
-    depends_on('boost', when='@:1.1.5')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='@:1.1.5')
 
     depends_on('mstk@3.3.5: +exodusii+parallel~use_markers partitioner=all', when='+mstk')
 

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Kea(AutotoolsPackage):
@@ -19,4 +20,8 @@ class Kea(AutotoolsPackage):
     depends_on('automake', type='build')
     depends_on('libtool',  type='build')
     depends_on('log4cplus')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)

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

@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+from spack.pkg.builtin.boost import Boost
+
 
 class Kicad(CMakePackage):
     """KiCad is an open source software suite for Electronic Design
@@ -24,6 +26,11 @@ class Kicad(CMakePackage):
     depends_on('gl')
     depends_on('glm')
     depends_on('boost@1.56:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('oce+X11')
     depends_on('swig', type='build')
     depends_on('curl')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Launchmon(AutotoolsPackage):
@@ -24,7 +25,11 @@ class Launchmon(AutotoolsPackage):
     depends_on('libgcrypt')
     depends_on('libgpg-error')
     depends_on("elf", type='link')
-    depends_on("boost")
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on("spectrum-mpi", when='arch=ppc64le')
 
     patch('launchmon-char-conv.patch', when='@1.0.2')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Libcudf(CMakePackage):
@@ -18,7 +19,11 @@ class Libcudf(CMakePackage):
 
     depends_on('cmake@3.14:', type='build')
     depends_on('cuda@10.0:')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('arrow+cuda+orc+parquet')
     depends_on('librmm')
     depends_on('dlpack')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Libfive(CMakePackage):
@@ -19,6 +20,11 @@ class Libfive(CMakePackage):
     depends_on('pkgconfig', type='build')
     depends_on('cmake@3.12:', type='build')
     depends_on('boost@1.65:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('eigen@3.3.0:')
     depends_on('libpng')
     depends_on('python@3:',         when='+python', type=('link', 'run'))

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

@@ -6,6 +6,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 TUNE_VARIANTS = (
     'none',
@@ -56,7 +57,11 @@ class Libint(AutotoolsPackage):
     depends_on('libtool', type='build')
 
     # Libint 2 dependencies
-    depends_on('boost', when='@2:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='@2:')
     depends_on('gmp', when='@2:')
 
     for tvariant in TUNE_VARIANTS[1:]:

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Libkml(CMakePackage):
@@ -26,6 +27,11 @@ class Libkml(CMakePackage):
     # See DEPENDENCIES
     depends_on('cmake@2.8:', type='build')
     depends_on('boost@1.44.0:')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('expat@2.1.0:')
     depends_on('minizip@1.2.8:')
     depends_on('uriparser')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Libmesh(AutotoolsPackage):
@@ -79,6 +80,11 @@ class Libmesh(AutotoolsPackage):
               'variant.')
 
     depends_on('boost', when='+boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, when='+boost')
     depends_on('eigen', when='+eigen')
     depends_on('hdf5+mpi', when='+hdf5+mpi')
     depends_on('mpi', when='+mpi')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Libpulsar(CMakePackage):
@@ -19,7 +20,11 @@ class Libpulsar(CMakePackage):
             sha256='5bf8e5115075e12c848a9e4474cd47067c3200f7ff13c45f624f7383287e8e5e')
 
     depends_on('zstd')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('protobuf')
     depends_on('pkgconfig')
     depends_on('openssl')

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

@@ -3,6 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
+from spack.pkg.builtin.boost import Boost
+
 
 class Librom(AutotoolsPackage):
     """libROM: library for computing large-scale reduced order models"""
@@ -20,7 +22,11 @@ class Librom(AutotoolsPackage):
     depends_on('perl')
     depends_on('graphviz')
     depends_on('doxygen')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
 
     def configure_args(self):
         spec = self.spec

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Lordec(MakefilePackage):
@@ -24,6 +25,10 @@ def url_for_version(self, version):
             return "https://gite.lirmm.fr/lordec/lordec-releases/uploads/800a96d81b3348e368a0ff3a260a88e1/lordec-src_0.9.tar.bz2"
 
     depends_on('boost@1.48.0:1.64.0', type=['build', 'link'])
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('gatb-core@1.4.1:', type=['build', 'link', 'run'])
     depends_on('zlib', type=['build', 'link'])
 

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

@@ -7,6 +7,7 @@
 import os
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Magics(CMakePackage):
@@ -72,7 +73,11 @@ class Magics(CMakePackage):
     # https://github.com/OSGeo/PROJ/wiki/proj.h-adoption-status
     depends_on('proj@:5', when='@:4.2.6')
     depends_on('proj@6:', when='@4.3:')
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('expat')
 
     # Magics (at least up to version 2.34.3) should directly and

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Mallocmc(CMakePackage):
@@ -34,4 +35,9 @@ class Mallocmc(CMakePackage):
 
     depends_on('cmake@2.8.12.2:', type='build')
     depends_on('boost@1.48.0:', type='link')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants, type='link')
     depends_on('cuda@5.0:', type='link')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Mapnik(AutotoolsPackage):
@@ -21,6 +22,11 @@ class Mapnik(AutotoolsPackage):
     depends_on('python', type=('build', 'run'))
     depends_on('boost@:1.72.0 +regex+filesystem+system+icu+program_options cxxstd=11', when='@3.0.23')
     depends_on('boost@:1.69.0 +regex+filesystem+system+icu+program_options cxxstd=11', when='@3.0.22')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('icu4c')
     depends_on('zlib')
     depends_on('freetype')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Mariadb(CMakePackage):
@@ -35,7 +36,10 @@ class Mariadb(CMakePackage):
     provides('mariadb-client')
     provides('mysql-client')
 
-    depends_on('boost')
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('cmake@2.6:', type='build')
     depends_on('pkgconfig', type='build')
     depends_on('bison', type='build')

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

@@ -4,6 +4,7 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 from spack import *
+from spack.pkg.builtin.boost import Boost
 
 
 class Masurca(Package):
@@ -20,7 +21,11 @@ class Masurca(Package):
     version('3.2.9', sha256='795ad4bd42e15cf3ef2e5329aa7e4f2cdeb7e186ce2e350a45127e319db2904b')
 
     depends_on('perl', type=('build', 'run'))
-    depends_on('boost')
+
+    # TODO: replace this with an explicit list of components of Boost,
+    # for instance depends_on('boost +filesystem')
+    # See https://github.com/spack/spack/pull/22303 for reference
+    depends_on(Boost.with_default_variants)
     depends_on('zlib')
     patch('arm.patch', when='target=aarch64:')