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nix dependency fails to compile for AIX targets #15083

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nix dependency fails to compile for AIX targets#15083
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awaiting upstreamdependencies

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@xtqqczze
xtqqczze
opened on Oct 5, 2026

nix does not build successfully for AIX targets with libc 0.2.190, but does with libc 0.2.189.

error[E0308]: mismatched types
   --> ~/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.31.3/src/sys/statvfs.rs:109:9
    |
108 |     pub fn filesystem_id(&self) -> c_ulong {
    |                                    ------- expected `u64` because of return type
109 |         self.0.f_fsid
    |         ^^^^^^^^^^^^^ expected `u64`, found `fsid_t`

failure first occurs with rust-lang/libc@061f61b from rust-lang/libc#5380

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  1. xtqqczze
    added
    dependencies
    on Oct 5, 2026
  2. xtqqczze
    marked this as blocking 3 issues on Oct 5, 2026
  3. xtqqczze
    changed the title [-]nix dependency fails to build for AIX targets[/-] [+]nix dependency fails to compile for AIX targets[/+] on Oct 5, 2026

  4. xtqqczze commented on Oct 6, 2026

    @xtqqczze
    xtqqczze
    on Oct 6, 2026
    CollaboratorAuthor

    libc 0.2.190 is required for #5210, so I think we may have to accept the breakage given powerpc64-ibm-aix is only a Rust Tier 3 target.

  5. xtqqczze
    added
    awaiting upstream
    on Oct 6, 2026

  6. xtqqczze commented on Oct 7, 2026

    @xtqqczze
    xtqqczze
    on Oct 7, 2026
    CollaboratorAuthor

    Depends on rust-lang/libc#5616.

  7. xtqqczze
    marked this as blocked on Oct 10, 2026
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