[bug#27412] [PATCH] gnu: rustc: Enable tests.

[Marius Bakke <mbakke@fastmail.com>]

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Danny Milosavljevic <dannym@scratchpost.org> writes:

> * gnu/packages/rust.scm (rustc)[source]: Remove bundled llvm.
> [native-inputs]: Add bison, flex, procps.
> [inputs]: Update llvm to llvm-3.9.1.
> [arguments]: Patch and enable tests.

Great!

[...]

> @@ -254,7 +262,18 @@ rustc-bootstrap and cargo-bootstrap packages.")
>                 (substitute* "src/tools/tidy/src/main.rs"
>                   (("^.*cargo.*::check.*$") ""))
>                 (substitute* "src/libstd/process.rs"
> -                 (("\"/bin/sh\"") (string-append "\"" bash "/bin/sh\"")))
> +                 ;; The newline is intentional.
> +                 ;; There's a line length "tidy" check in Rust which would
> +                 ;; fail otherwise.
> +                 (("\"/bin/sh\"") (string-append "
> +\"" bash "/bin/sh\"")))

Can you use '\n' instead?

> +               (substitute* "src/libstd/sys/unix/process/process_common.rs"
> +                 (("fn test_process_mask") "#[cfg_attr(target_os = \"linux\", ignore)]
> +fn test_process_mask"))

I'm guessing this is disabled due to some build container oddity?

> +               (substitute* "src/vendor/libc/src/lib.rs"
> +                 (("TODO") "TXDO"))

A comment about this would be nice.

> +               ;; Our ld-wrapper cannot process non-UTF8 bytes in LIBRARY_PATH.
> +               (delete-file-recursively "src/test/run-make/linker-output-non-utf8")

This is temporary, right? Maybe add the guix-devel URL?

LGTM!

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