0.9.0 Release

[NWPlayer123]

What is there still to be done to release a new version of heapless?

There's a pretty sizeable changelog, and I've had to pin my heapless dependency on a project to the latest git release since I have a need for Vec::drain.

I also encountered compile errors trying to construct a String::from_str due to String now being a type alias for a StringInner compared to crates that are still targeting the 0.8.0 release with an incompatible type (e.g. embedded_svc::wifi::ClientConfiguration).

[sosthene-nitrokey]

• Re-introduce covariance for containers #502

Should be merged before a 0.9 release to reduce the risk of breakage of existing code.

I also encountered compile errors trying to construct a String::from_str due to String now being a type alias for a StringInner compared to crates that are still targeting the 0.8.0 release with an incompatible type (e.g. embedded_svc::wifi::ClientConfiguration).

I introduced the change that made String an alias for StringInner , but I don't understand that breakage. Could you please give an example?

[NWPlayer123]

I introduced the change that made String an alias for StringInner , but I don't understand that breakage. Could you please give an example?

I double checked the error; from_str no longer exists so I changed it to ClientConfiguration { ssid: heapless::String::<32>::from_utf8("MyNetwork").expect("Error converting WIFI_SSID") } which tells me mismatched types: expected heapless::string::String<32>, found StringInner<OwnedStorage<32>> due to the type no longer existing between 0.8 and main, so until 0.9 is released and crates update the dependency, I have to do "MyNetwork".try_into().expect("Error converting WIFI_SSID"). Not a huge problem, just annoying to have to do

[sosthene-nitrokey]

Are you directly depending on the updated heapless with

[dependencies]
heapless = { git = "https://github.com/rust-embedded/heapless.git" }

?

That leads to duplicate dependencies, and you probably would still have the same error even without the StringInner refactor.

Instead of depending on heapless through git, you maybe can patch it:

[dependencies]
heapless = "0.8.0"

[patch.crates-io]
heapless = { git = "https://github.com/rust-embedded/heapless.git" }

[zeenix]

• Re-introduce covariance for containers #502

Should be merged before a 0.9 release to reduce the risk of breakage of existing code.

@sosthene-nitrokey That's fair. I don't intent to put any pressure on you (or anyone) but if that looks like it will take some time, would you consider creating a 0.8.0 branch with some fixes (I'm thinking of #530) applied and/or backported and doing a 0.8.1 first?

[sosthene-nitrokey]

I'm not the maintainer of this library, I can't prepare releases. At Nitrokey we'd like to see #502 be merged and released when possible too. From my point of view the PR is ready for merging.

My understanding is that a 0.8.1 release could include #502 and the View types and that it does not include breaking changes. No need to backport anything.

[newAM]

We have also been discussing a 1.0 release, but that's a bit further in the future to get dependencies to 1.0 and everything in #494.

I'm not opposed to a 0.9 until then, what do you think @rust-embedded/libs ?