search

fornwall / rust-script

Run Rust files and expressions as scripts without any setup or compilation step.
https://rust-script.org
Apache License 2.0
1.21k stars 41 forks source link

error[E0658]: arbitrary expressions in key-value attributes are unstable #41

Closed flavv closed 2 years ago

flavv commented 2 years ago
$ cargo install rust-script Updating crates.io index [...] [...] Compiling env_logger v0.9.0 Compiling clap_derive v3.0.0-beta.5 Compiling clap v3.0.0-beta.5 error[E0658]: arbitrary expressions in key-value attributes are unstable --> /home/flav/.cargo/registry/src/github.com-1ecc6299db9ec823/clap-3.0.0-beta.5/src/lib.rs:8:10 8 #![doc = include_str!("../README.md")] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

= note: see issue #78835 https://github.com/rust-lang/rust/issues/78835 for more information

error: aborting due to previous error

For more information about this error, try rustc --explain E0658. error: could not compile clap

To learn more, run the command again with --verbose. warning: build failed, waiting for other jobs to finish... error: failed to compile rust-script v0.18.0, intermediate artifacts can be found at /tmp/cargo-installAqSpQJ

Caused by: build failed

fornwall commented 2 years ago

Hm, seems to be that the latest clap 3 beta requires rust 1.54 (due to extended_key_value_attributes becoming stable there) - see https://github.com/clap-rs/clap/issues/2741.

I'm thinking we need to state and bump our MSRV (Minimum Supported Rust Version) to 1.54 - will that be a problem for you, @flavv, or will you be able to update? If possible, using rustup should make updating smooth.

fornwall commented 2 years ago

Let's go for 1.54 as minimum supported rust version (MSRV) - I've added that information in the README now.

flavv commented 2 years ago

$ rustc --version rustc 1.57.0 (f1edd0429 2021-11-29)

$ echo 'println!("Hello, World!");' > hello.rs $ rust-script hello.rs Hello, World!

it works fine !