Rustup 1.27.0 incompatible with older macOS

[andersm]

Problem

Trying to run rustup self update on macOS 10.14 fails with the error dyld: cannot load 'rustup-init' (load command 0x80000034 is unknown).

Full output:

$ rustup self update
info: checking for self-update
info: downloading self-update
  rustup updated - (unknown) (from 1.26.0)

dyld: cannot load 'rustup-init' (load command 0x80000034 is unknown)
error: self-updated failed to replace rustup executable

$ uname -a
Darwin Caligari.local 18.7.0 Darwin Kernel Version 18.7.0: Tue Jun 22 19:37:08 PDT 2021; root:xnu-4903.278.70~1/RELEASE_X86_64 x86_64

Steps

1. Run rustup self update
2. There is no step 2.

Possible Solution(s)

No response

Notes

No response

Rustup version

rustup 1.26.0 (5af9b9484 2023-04-05)

Installed toolchains

Default host: x86_64-apple-darwin
rustup home:  /Users/anders/.rustup

stable-x86_64-apple-darwin (default)
rustc 1.76.0 (07dca489a 2024-02-04)

[ehuss]

Thanks for the report!

I believe rustup needs to be built with the environment variable MACOSX_DEPLOYMENT_TARGET: 10.12. See rust-lang/rust#104570 for the details. Newer versions of Xcode technically don't support such an old version of macos, but I believe in this case it shouldn't be necessary to downgrade.

[djc]

@ehuss are you suggesting we/the project should build/release a different binary release for macOS, or that the OP builds their own?

[ehuss]

Yea, rustup itself needs to be built with that set, presumably in https://github.com/rust-lang/rustup/blob/master/ci/actions-templates/macos-builds-template.yaml.

You might also consider this for a point release since it is a tier-1 platform.

[rami3l]

@andersm Does our new build work for you? (You might need to log into GitHub in order to download.)

The build above is outdated, please use #3708 (comment) instead.

[andersm]

Yes, it seems to run fine.

$ rustup --version
rustup 1.27.0+7 (2eff946a6 2024-03-13)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.76.0 (07dca489a 2024-02-04)`

[rami3l]

Yes, it seems to run fine.

@andersm Thanks for helping us out with the testing! We hope to be able to ship v1.27.1 soon, please stay tuned :)

[rami3l]

@djc Why closing this before merging #3710?

[djc]

Ahh, sorry, got confused between this and another issue.