Notes

[jamesdbrock]

My notes from using mkSpagoDerivation:

Needed in flake.nix:

  nixConfig.sandbox = "relaxed";

Needed in ~/.config/nix.conf

experimental-features = nix-command flakes configurable-impure-env auto-allocate-uids

[jeslie0]

I would be interested to see your example flake that requires having sandbox set to relaxed. I've not needed that when I've used this in my projects. I also only have nix-command and flakes enabled as experimental features.

I'm not sure what is causing you to have to add these settings. If we can figure it out, I will update the documentation to make it clearer.

[jamesdbrock]

It is totally possible that I did something wrong and didn't really need those settings. I will post here if I figure it out.

[jamesdbrock]

Anyway, whatever weird thing I'm doing, mkSpagoDerivation is working perfectly for me, so thank you.

[jamesdbrock]

I'm working on this PR, if you're really curious. rowtype-yoga/purescript-protobuf#40

[jeslie0]

I am starting to use purescript-protobuf in a personal project. It seems like maybe that is where you were getting the sandbox issues - I am also getting them when trying to build protoc-gen-purescript.

I hope your PR goes well - I'm happy to help if you have issues using mkSpagoDerivation.

[jamesdbrock]

I am starting to use purescript-protobuf in a personal project.

Oh I'll finish that PR then. I think I can get it merged today.

[jamesdbrock]

@jeslie0 I tagged protobuf v4.5.0 but I can't publish it to the Registry yet. I think you can use v4.5.0 this way: rowtype-yoga/purescript-protobuf#43

For generating .purs from .proto, the flake.nix publishes a protoc-gen-purescript package which you can use as a Nix nativeBuildInputs.

nix flake show github:rowtype-yoga/purescript-protobuf

[jeslie0]

Thank you very much, I will try using the upgraded version when I'm back from work.

I know this is the wrong place to ask this, but if you aren't using spago2nix anymore, do you still need the relaxed sandbox option in the flake? Removing that makes it much easier to build the plugin.

[jamesdbrock]

if you aren't using spago2nix anymore, do you still need the relaxed sandbox option in the flake? Removing that makes it much easier to build the plugin.

Good question. I just removed the relaxed sandbox and everything still works, so I pushed it to master.

[jamesdbrock]

And furthermore I don't seem to need this anymore either.

experimental-features = configurable-impure-env auto-allocate-uids

I don't know what that was about. Maybe I'll find out when I nix-collect-garbage and need to rebuild all this stuff.

[jeslie0]

Very happy, thank you! I added the new version to my project. Happy to close this issue?

[jamesdbrock]

Thank you!