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| author | Andreas Rammhold <andreas@rammhold.de> | 2020-02-11 11:48:45 +0100 |
|---|---|---|
| committer | Andreas Rammhold <andreas@rammhold.de> | 2020-02-11 11:48:45 +0100 |
| commit | be5597fc9d2f4fefac097d3c6e9364bedf548078 (patch) | |
| tree | 4cdb1cacdf28b0ccca932029c662514227aec16e /pkgs/development/python-modules/python-mapnik/python-mapnik_std_optional.patch | |
| parent | 157f392f57ddcb3a0c8b7062dc01469c6b43fdce (diff) | |
buildRustCrate: remove superfluous dependency overrides
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.
Diffstat (limited to 'pkgs/development/python-modules/python-mapnik/python-mapnik_std_optional.patch')
0 files changed, 0 insertions, 0 deletions