gcc doesn’t know all of the specific flags here. It is easier to just
set -Wno-error.

libinput switched from Doxygen to Sphinx for user docs. Since Sphinx is a Python
module, it propagates Python. And because it is listed in nativeBuildInputs,
its python binary takes precedence over the one added in buildInputs.
This results in a wrong interpreter being substituted into shebangs.

The contamination occurred previously too but libinput does not use pyparsing
dependency since 1.12.0, so it could be removed.

I prevented Sphinx from propagating Python and added some additional
dependencies to it. In the future we might want something more reusable.

While at it, I also fixed the tests.

This fixes build errors like

 GEN    asn1ct_eval_ext.erl
{"init terminating in do_boot",{undef,[{asn1ct_func,start_link,[],[]},{prepare_templates,gen_asn1ct_eval,1,[{file,"prepare_templates.erl"},{line,58}]},{init,start_em,1,[]},{init,do_boot,3,[]}]}}
init terminating in do_boot ({undef,[{asn1ct_func,start_link,[],[]},{prepare_templates,gen_asn1ct_eval,1,[{_},{_}]},{init,start_em,1,[]},{init,do_boot,3,[]}]})

that occur on some machines but not others.

https://dev.gnupg.org/T4205

https://lists.gnu.org/archive/html/info-gnu/2018-12/msg00001.html

erlang: disable parallel building

llvm: fix cross-compilation

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/v4l-utils/versions

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/wildmidi/versions

Ncurses uses `install -s` to also strip the binaries while installing.
This broke the cross build because the wrong strip command was chosen.

libselinux needs native python to compute the installation prefix.
Swig generates the c code for the extension and needs python.h at compile,
so we put python into buildInputs

ncurses: fix cross-build by disable stripping

Otherwise -lpcap gets propagated to reverse deps
This can break strongswan build for example
#51252 (comment)

perl: update perl-cross archive

Glib uses gobject introspection to generate documentation.
If we would want to cross-compile those, we would need native binaries
from the previous build stage. Instead we can simply just copy over
the generated documentation.

glib: fix cross -> inherit devdoc from native build

Only the make-based build support cross-compilation.
Also use less vendored libraries

sysvinit: 2.89 -> 2.93

iptables: prune libtool files after build

(cherry picked from commit 0b468bf)

These just copy commands from Products/Release/. But with #52256 we
now build .dsym directories that somehow wind up in Products/Release/.
This makes things more exact by just copying the files in Products/Release/.

Reverts commits bumping to macOS stuff to 10.12:

commit ec1f78d.
commit d0dc91d.
commit a1d2973.
commit 4251121.
commit e6f7f29.

fixes some issues in my commits in:

- basic_cmds
- network_cmds

(cherry picked from commit f283145)

Not all installs will have a $drivers output, so we just create an
empty one here.

A few more rebuilds (~1k on x86_64-linux).