Handle missing riscv64-unknown-linux-gnu #87
Description
$ head -5 /etc/os-release 03/01/24 16:06:05 PM
NAME="CentOS Stream"
VERSION="9"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="9"
$ rustc --version
rustc 1.75.0 (82e1608df 2023-12-21) (Red Hat 1.75.0-1.el9)
$ cargo-vendor-filterer
Gathering metadata
Skipping rpmostree-rust
Skipping rpmostree-client
Skipping libdnf-sys
Gathering metadata for platforms
error: Executing cargo metadata: Error during execution of `cargo metadata`: error: failed to run `rustc` to learn about target-specific information
Caused by:
process didn't exit successfully: `rustc - --crate-name ___ --print=file-names --target riscv64gc-unknown-linux-gnu --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=split-debuginfo --print=crate-name --print=cfg` (exit status: 1)
--- stderr
error: could not create LLVM TargetMachine for triple: riscv64-unknown-linux-gn: No available targets are compatible with triple "riscv64-unknown-linux-gnu"
$
This however works with the Fedora rustc.
It seems to me RHEL rust toolchain apparently omits support for riscv64-unknown-linux-gnu...and hence using our default of tier = 2 breaks there.
Compare:
This is messy. If we do something like detect what targets the toolchain has, then the filtering is suddenly dependent on the host.
Maybe we can just allow opting-in to that via e.g.
[workspace.metadata.vendor-filter]
platforms = ["*-unknown-linux-gnu"]
tier = "2"
filter-host = true
And filter-host acknowledges some potential unreproducibility.