* celeritas: remove deprecated versions through 0.3
* celeritas: deprecate old versions
* celeritas: add c++20 option
* Propagate vecgeom CUDA requirements
* Remove outdated conflicts and format it
Automatic splicing say `Spec` grow a `__len__` method but it's only used
in one place and it's not clear the semantics are useful elsewhere. It also
runs the risk of Specs one day being confused for other types of containers.
Rather than introduce a new function for one algorithm, let's use a more
specific method in the splice code.
- [x] Use topological ordering in `_resolve_automatic_splices` instead of
sorting by node count
- [x] delete `Spec.__len__()` and `Spec.__bool__()`
---------
Signed-off-by: Todd Gamblin <tgamblin@llnl.gov>
Co-authored-by: Greg Becker <becker33@llnl.gov>
Co-authored-by: Massimiliano Culpo <massimiliano.culpo@gmail.com>
`spack spec` output has looked like this for a while:
```console
> spack spec /v5fn6xo /wd2p2v7
Input spec
--------------------------------
- /v5fn6xo
Concretized
--------------------------------
[+] openssl@3.3.1%apple-clang@16.0.0~docs+shared build_system=generic certs=mozilla arch=darwin-sequoia-m1
[+] ^ca-certificates-mozilla@2023-05-30%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
...
Input spec
--------------------------------
- /wd2p2v7
Concretized
--------------------------------
[+] py-six@1.16.0%apple-clang@16.0.0 build_system=python_pip arch=darwin-sequoia-m1
[+] ^py-pip@23.1.2%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
```
But the input spec is right there on the CLI, and it doesn't add anything to the output.
Also, since #44843, specs concretized in the CLI line can be unified, so it makes sense
to display them as we did in #44489 -- as one multi-root tree instead of as multiple
single-root trees.
With this PR, concretize output now looks like this:
```console
> spack spec /v5fn6xo /wd2p2v7
[+] openssl@3.3.1%apple-clang@16.0.0~docs+shared build_system=generic certs=mozilla arch=darwin-sequoia-m1
[+] ^ca-certificates-mozilla@2023-05-30%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
[+] ^gmake@4.4.1%apple-clang@16.0.0~guile build_system=generic arch=darwin-sequoia-m1
[+] ^perl@5.40.0%apple-clang@16.0.0+cpanm+opcode+open+shared+threads build_system=generic arch=darwin-sequoia-m1
[+] ^berkeley-db@18.1.40%apple-clang@16.0.0+cxx~docs+stl build_system=autotools patches=26090f4,b231fcc arch=darwin-sequoia-m1
[+] ^bzip2@1.0.8%apple-clang@16.0.0~debug~pic+shared build_system=generic arch=darwin-sequoia-m1
[+] ^diffutils@3.10%apple-clang@16.0.0 build_system=autotools arch=darwin-sequoia-m1
[+] ^libiconv@1.17%apple-clang@16.0.0 build_system=autotools libs=shared,static arch=darwin-sequoia-m1
[+] ^gdbm@1.23%apple-clang@16.0.0 build_system=autotools arch=darwin-sequoia-m1
[+] ^readline@8.2%apple-clang@16.0.0 build_system=autotools patches=bbf97f1 arch=darwin-sequoia-m1
[+] ^ncurses@6.5%apple-clang@16.0.0~symlinks+termlib abi=none build_system=autotools patches=7a351bc arch=darwin-sequoia-m1
[+] ^pkgconf@2.2.0%apple-clang@16.0.0 build_system=autotools arch=darwin-sequoia-m1
[+] ^zlib-ng@2.2.1%apple-clang@16.0.0+compat+new_strategies+opt+pic+shared build_system=autotools arch=darwin-sequoia-m1
[+] ^gnuconfig@2022-09-17%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
[+] py-six@1.16.0%apple-clang@16.0.0 build_system=python_pip arch=darwin-sequoia-m1
[+] ^py-pip@23.1.2%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
[+] ^py-setuptools@69.2.0%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
[-] ^py-wheel@0.41.2%apple-clang@16.0.0 build_system=generic arch=darwin-sequoia-m1
...
```
With no input spec displayed -- just the concretization output shown as one consolidated
tree and multiple roots.
- [x] remove "Input Spec" section and "Concretized" header from `spack spec` output
- [x] print concretized specs as one BFS tree instead of multiple
---------
Signed-off-by: Todd Gamblin <tgamblin@llnl.gov>
Co-authored-by: Harmen Stoppels <harmenstoppels@gmail.com>
