Error message on installation with pip

[Robinlovelace]

Heads-up @pkopparla I just tried to install the Python package with pip on my Ubuntu laptop. Very happy to say: it's clearly there and works 🎉 FYI I get this error message, this is not an error with the package but with my Rust installation that I've seen on other projects (most recently A/B Street) so will check in with Rust expert @dabreegster on resolving it. Opening this issue here in case other people hit the issue. Can't wait to give it a try!

pip install zonebuilder
Collecting zonebuilder
  Downloading zonebuilder-1.0.1.tar.gz (62 kB)
     |████████████████████████████████| 62 kB 778 kB/s 
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... error
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 /tmp/tmpgjedls6l prepare_metadata_for_build_wheel /tmp/tmpujcxvqeq
         cwd: /tmp/pip-install-nyex8wzl/zonebuilder
    Complete output (13 lines):
    💥 maturin failed
      Caused by: Cargo metadata failed. Does your crate compile with `cargo build`?
      Caused by: `cargo metadata` exited with an error: error: failed to parse manifest at `/tmp/pip-install-nyex8wzl/zonebuilder/Cargo.toml`
    
    Caused by:
      feature `edition2021` is required
    
      The package requires the Cargo feature called `edition2021`, but that feature is not stabilized in this version of Cargo (1.55.0 (32da73ab1 2021-08-23)).
      Consider trying a newer version of Cargo (this may require the nightly release).
      See https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#edition-2021 for more information about the status of this feature.
    Error running maturin: Command '['maturin', 'pep517', 'write-dist-info', '--metadata-directory', '/tmp/pip-modern-metadata-a1wv99px', '--interpreter', '/usr/bin/python3']' returned non-zero exit status 1.
    Checking for Rust toolchain....
    Running `maturin pep517 write-dist-info --metadata-directory /tmp/pip-modern-metadata-a1wv99px --interpreter /usr/bin/python3`
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 /tmp/tmpgjedls6l prepare_metadata_for_build_wheel /tmp/tmpujcxvqeq Check the logs for full command output.

[Robinlovelace]

I tried...

rustup update  
info: syncing channel updates for 'stable-x86_64-unknown-linux-gnu'
info: latest update on 2021-12-02, rust version 1.57.0 (f1edd0429 2021-11-29)

[Robinlovelace]

And... It works!

pip install zonebuilder
Collecting zonebuilder
  Using cached zonebuilder-1.0.1.tar.gz (62 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done

    Preparing wheel metadata ... done
Building wheels for collected packages: zonebuilder
  Building wheel for zonebuilder (PEP 517) ... done
  Created wheel for zonebuilder: filename=zonebuilder-1.0.1-cp38-cp38-manylinux_2_24_x86_64.whl size=1025413 sha256=1b28d5404dae4b8b4de52d69aa8f6995152f5a8a16bd0ed234386873221a8721
  Stored in directory: /home/robin/.cache/pip/wheels/aa/ae/96/d4ca6e9fd8a7389a86c2fb2947875e035c6bc32f08bfff6253
Successfully built zonebuilder
Installing collected packages: zonebuilder
Successfully installed zonebuilder-1.0.1

[pkopparla]

Ah that's a bit worrying that it needs an up-to-date rust tool chain to install. I thought it'd work just with pure python. I'll check and see if there's something that can be changed.

[Robinlovelace]

No worries, I think it's just because I had an out of date Rust toolchain. I think we can close this issue. Just wanted to communicate my experience.

[michaelkirk]

Seems like you have long since updated your rust compiler, but also it seems like maybe maturin's dependency on 2021 edition has since been rolled back: PyO3/maturin#708 so that earlier rust versions might work.

[Robinlovelace]

Aha, thanks @michaelkirk I will try again...