Issues installing 0.4.0 with binstall

[DavidAntliff]

I am a human, but what follows is an AI-generated report based on my personal experiences, as I don't think I could have explained it better myself, and I don't understand the inner workings of binstall / crates.io well enough to debug this manually.

If it is preferred that I file this as an issue, I'm happy to do so, just let me know.

It's quite likely that this is an issue exacerbated by my environment, so let me know if there's something I should try instead.

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v0.4.0: binstall fails (rustowlc missing from release archive), and the cargo install fallback also fails

cargo install-update rustowl (which shells out to cargo-binstall) fails on v0.4.0:

Updating rustowl
 INFO resolve: Resolving package: 'rustowl@=0.4.0'
ERROR resolve: When resolving rustowl bin rustowlc is not found. This binary
is not optional so it must be included in the archive, please contact with
upstream to fix this issue.
 WARN resolve: Error while downloading and extracting from fetcher github.com:
failed to find or install binaries: bin file
/home/david/.cargo/cargo-binstall4HnWTk/bin-rustowl-x86_64-unknown-linux-gnu-GhCrateMeta/rustowlc
not found
ERROR Fatal error:
  × For crate rustowl: Fallback to cargo-install is disabled

The v0.4.0 release assets contain only rustowl-<target> and rustowl-<target>.tar.gz — no rustowlc. The published manifest still declares rustowlc as a non-optional bin target, so binstall requires it in the archive and aborts. This affects the install method the README recommends for the Neovim plugin (build = 'cargo binstall rustowl').

cargo install rustowl@=0.4.0 builds rustowl fine but fails on rustowlc, which links rustc_private:

error[E0463]: can't find crate for `polonius_engine`
 --> .../rustowl-0.4.0/src/bin/rustowlc.rs:7:1
error[E0463]: can't find crate for `rustc_borrowck`
  = help: maybe you need to install the missing components with:
    `rustup component add rust-src rustc-dev llvm-tools-preview`
[... 13 errors total, all rustc_* / polonius_engine ...]
error: could not compile `rustowl` (bin "rustowlc") due to 13 previous errors

Adding rust-src rustc-dev llvm-tools-preview is not sufficient. On current stable, rustowlc fails with E0554 (#![feature(rustc_private)] is not usable on the stable channel) plus API-drift errors — rustc_data_structures::stable_hasher is now stable_hash and StableHashingContext is now StableHashCtxt.

The crates.io package doesn't include rust-toolchain.toml, so cargo install builds rustowlc against whatever the user's default toolchain is, which breaks as soon as rustc internals move past the supported version (1.95 for 0.4.0). With binstall also broken on 0.4.0, there is currently no working install path from crates.io — only the prebuilt release binary.

Environment

• x86_64-unknown-linux-gnu
• rustowl 0.4.0
• cargo-binstall 1.22.0
• rustc 1.97.1

[MuntasirSZN]

True. But its a bit different. Binstall sees our Cargo.toml first then determines if it should install or not install rustowlc. As we move fast (and dont have a dev branch sadly) it breaks. On the rustc side, expected as we are using rustc internals which are unstable. Try with RUSTC_BOOTSTRAP=1.

[DavidAntliff]

Thanks. I tried RUSTC_BOOTSTRAP=1 cargo install rustowl but I hit a rustc_data_structures::stable_hasher unresolved import error:

error[E0432]: unresolved import `rustc_data_structures::stable_hasher`
 --> /home/david/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rustowl-0.4.0/src/bin/core/compiler/hash.rs:4:28
  |
4 | use rustc_data_structures::stable_hasher::HashStable;
  |                            ^^^^^^^^^^^^^ could not find `stable_hasher` in `rustc_data_structures`

The curl installer script does work, though, so I can use that for now.

[Hecatron]

Under windows you tend to see something like this

cargo binstall rustowl
 INFO resolve: Resolving package: 'rustowl'
 WARN resolve: Error while downloading and extracting from fetcher github.com: I/O Error: The filename, directory name, or volume label syntax is incorrect. (os error 123)
ERROR Fatal error:
  \x1b[31m×\x1b[0m For crate rustowl: Fallback to cargo-install is disabled
\x1b[31m  ╰─▶ \x1b[0mFallback to cargo-install is disabled

Since there's been some issues getting the winget package through
I've found the easiest way is to just

• Manually download rustowl-x86_64-pc-windows-msvc.zip
• Extract to a directory
• Copy both rustowl.exe and rustowlc.exe across to somewhere under path such as C:\Users\<username>\.cargo\bin

[MuntasirSZN]

Under windows you tend to see something like this

cargo binstall rustowl
 INFO resolve: Resolving package: 'rustowl'
 WARN resolve: Error while downloading and extracting from fetcher github.com: I/O Error: The filename, directory name, or volume label syntax is incorrect. (os error 123)
ERROR Fatal error:
  \x1b[31m×\x1b[0m For crate rustowl: Fallback to cargo-install is disabled
\x1b[31m  ╰─▶ \x1b[0mFallback to cargo-install is disabled

Since there's been some issues getting the winget package through I've found the easiest way is to just

* Manually download `rustowl-x86_64-pc-windows-msvc.zip`

* Extract to a directory

* Copy both `rustowl.exe` and `rustowlc.exe` across to somewhere under path such as `C:\Users\<username>\.cargo\bin`

Now fixed. I updated winget one. Sorry for the delay!

[MuntasirSZN]

Also you can build from rustowl git easily, I have updated to 1.98.1 compiler.

Still binstall fails (needs a new release) but there are better options....