How to search nixpkgs by e.g. `buildInputs`?

[n8henrie]

Thanks for your thoughts!

@reckenrode

CMake needs to run during the build, so it should be put in nativeBuildInputs.

Yes, I was reading about this, which is what prompted me to search and confirm that it was the case. My approach was:

$ rg \
    --no-filename \
    --no-line-number \
    --multiline-dotall '.*\b((native)?[bB]uildInputs) = \[.* cmake.*\];' \
    --replace '$1' |
    sort |
    uniq -c
      1 buildInputs
   1551 nativeBuildInputs

I’m running this on a release-23.05 checkout; the 1 exception above was fixed here: xplorer: move cmake to nativeBuildInputs · NixOS/nixpkgs@c8929e4 · GitHub

@reckenrode

The Darwin stdenv uses libc++ by default, so you should be able to use default stdenv on Darwin. If you need it anyway (e.g., to use libc++ on Linux), you can use libcxxStdenv where you would normally use stdenv.

Interesting – I still haven’t figured out this issue, but I’ve never done C or C++ development, so I’m not surprised it’s taking me a while.

@reckenrode

As far as I can tell, it’s not packaged yet. It might be possible to fetch it with fetchPypi and use buildPythonPackage, but I expect it’ll require some work to get it to build.

I have it building: nix-cadquery/flake.nix at 3adc4c1590b46a00b57d8826548184c7789199c8 · n8henrie/nix-cadquery · GitHub – as mentioned, these were just examples of the types of questions I was hoping to answer by searching nixpkgs.

So it sounds like your general approach is “grep nixpkgs and manually review / refine results.” Is that a fair characterization?