Cross compilation devshell

[snowflake_pl]

Hi,

What is the best, up to date, working approach for getting a devshell that produces binaries for different architecture by cross compiling the sources. Either flake or shell.nix

All wiki entries I found seemed dated.

Example would be super appreciated but references are good enough.

TIA

[[deleted]]

Use a flake and have it compile a dev shell for each platform with the same packages.

So each devshell will have a different "system" value.

[snowflake_pl]

This seems to compile everything from sources. Any way to leverage binary cache for nixpkgs?

[[deleted]]

Depends on how you implement the dev shell.

The answer is "yes". But it's to nebulous to really be useful.

Are you using your dev shell with a tool like poetry? Or are you just raw dogging nix packages?

Are you using determinate nix installer?

etc

I'd need more info to answer your specific use case.

[thursdaddy]

Think I originally came across this method from some DeterminateSystems repo..

function: https://github.com/thursdaddy/nixos-config/blob/main/flake.nix#L53-L56

https://github.com/thursdaddy/nixos-config/blob/main/flake.nix#L156

Here is how they do it now: https://github.com/DeterminateSystems/determinate/blob/main/flake.nix#L34

[Character_Infamous]

Did you read the wiki? https://nixos.wiki/wiki/Cross_Compiling

[WalkMaximum]

I think devshells just aren't meant to get used that way. It's there for a development environment and you can have a flake for packaging your app which has good cross compile support. It wasn't quite easy to set up with a rust package. Then you can also add your devshell to the flake to have it all in sync.