By overriding each dependency on every level of the dependency tree we
are creating a lot of unnecessary instances of the same derivation
Looking at the output size of `nix-instantiate --trace-function-calls
-vvvv …` and the execution time I got about a 10x improvement after
applying this change.
It was probably good intentions that lead to these overrides but in
practice no tooling (that I know of) really needs this. `carnix` and
`crate2nix` are fine without those overrides. Furthermore I believe that
it is the job of the tooling around `buildRustCrate` to provide a
coherent set of overrides. By not enforcing all of the overrides, debug
flags, verbosity, … to be the same throughout the closure we also allow
consumers to override specific aspects of the crates. Some (older?)
crates might need different `crateOverrides` then newer crates with the
same name. Currently such situations can not (easily) be implemented
with the override in-place.
dependencies:
- moarvm: init at 2020.01.1
- nqp: init at 2020.01
- zef: init 0.8.2
Replaced the rakudo-star distribution with packages for raku, moarvm, nqp and
zef.
As explained by Orivej (reformatted from Markdown):
> These (except libsignal-protocol-c) are private dependencies of the
> actual dependencies that should neither be propagated nor added
> manually to dino. For example, libpsl and brotli come from
> libsoup-2.4.pc:
>
> Requires: glib-2.0 >= 2.38, gobject-2.0 >= 2.38, gio-2.0 >= 2.38
> Requires.private: libxml-2.0, sqlite3, libpsl >= 0.20, libbrotlidec, zlib
>
> (To be precise, glib uses utillinuxMinimal rather than utillinux.)
>
> The warnings we see, such as Package 'mount', required by 'gio-2.0',
> not found, come from CMake running both pkg-config --libs and
> pkg-config --static --libs to populate both <XXX>_LIBRARIES and
> <XXX>_STATIC_LIBRARIES[1], but dino has no use for the latter.
> Currently these warnings can not be disabled:
> https://gitlab.kitware.com/cmake/cmake/issues/18158
>
> (They could be prevented by pruning Requires.private from shared-only
> libraries akin to <https://github.com/NixOS/nixpkgs/pull/51767>,
> although it can not be detected if a library is shared-only from the
> .pc file alone, and this is just a warning.)
>
> [1]: docs: https://cmake.org/cmake/help/v3.16/module/FindPkgConfig.html
