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pyo3 async runtime (lemmy.physfluids.fr)
 

Hello,

I am trying to wrap some Rust code that uses sea-orm compiled with "runtime-tokio-rustls" feature. I am using the new pyo3 "experimental-async" feature, which AFAIK is based on pyo3_async.

So I get that this is supposed to be runtime-agnostic, and not have two event loops, one for python async and one for rust async.

But, how do I tell pyo3 to use tokio runtime specifically? Or, how do I set up Python asyncio eventloop to use tokio somehow?

Indeed, it seems that it does not use tokio runtime, so I get this error when I invoke the rust async function from Python:

pyo3_runtime.PanicException: this functionality requires a Tokio context
Cargo env file? in c/[email protected]
[–] [email protected] 0 points 7 months ago

Ok, I'll look into that then. Thanks.

Cargo env file? in c/[email protected]
[–] [email protected] 0 points 7 months ago (2 children)

Going opt-in instead of opt-out does not change the fact that I would still have to toggle the features manually. To be more specific, my use case is that I have a program to control cameras in my lab. But not all computers have the libraries for all cameras. So, every supported library can be enable/disable using a feature But the program being still in active development, I am frequently using cargo run, cargo check, cargo install, on different computers with different libraries installed. What would be convenient would be to have a configuration file on each computer, specifying that we will build only for PCO camera on this computer, only for Photometrics camera on this one, only Ximea and PCO on this one, instead of having to remember to toggle the relevant features every time. A shell script is not very convenient because I use different commands, run, check, install etc.

Cargo env file? in c/[email protected]
[–] [email protected] 0 points 7 months ago

This would look like it would be what I am looking for, but the documentation of the configuration file does not mention features.

1
Cargo env file? (lemmy.physfluids.fr)
 

Hello,

I have a project for which some machines have only a subset of features set. Currently, I write

cargo run --no-default-features --features "toto,titi" --bin my_bin

This is a bit cumbersome and I sometimes forget the --no-default-features --features part. I was wondering if there is a local config file that I could put in the directory to instruct cargo to use this particular subset of features. I guess this should be in the documentation, but I didn't find it.

Link against external DLL in c/[email protected]
[–] [email protected] 0 points 7 months ago (1 children)

Thank you very much for your reply. I have tried the approach you explain in your blog post, and it works. Your blog post is useful and clearly written !

1
Link against external DLL (lemmy.physfluids.fr)
 

Hello,

I am trying to use the SDK provided by the manufacturer of a camera from Rust. I use this in the build.rs :

println!(r"cargo:rustc-link-search=C:\Program Files\Digital Camera Toolbox\Camware4");
println!("cargo:rustc-link-lib=SC2_Cam");

However, it tries to find a .lib file, while the actual file is SC2_Cam.dll. I’ve tried specifying the kind as dylib=SC2_Cam but it makes no difference.

Am I missing something obvious, or is it just not possible? Do I have to manually load the DLL at runtime with things like the libloading crate?

Is the air in a closed container at 100% relative humidity? in c/[email protected]
[–] [email protected] 1 points 10 months ago

At equilibrium, I’d say yes.