Re: [PATCH v2] gnu: Add rust (sidenotes on rust)

[ng0]

ng0 <address@hidden> writes:

> I can testbuild rustc and give some input.
>
> Additionally, we're having conversations about rust, today this came up:
>
>
> dev @> Very interesting: 
> https://github.com/rust-lang/rfcs/blob/master/text/1200-cargo-install.md
> " it's not clear that this is worthwhile enough to support installing 
> libraries yet."
> on bootstraping: 
> https://mail.mozilla.org/pipermail/rust-dev/2014-June/010222.html 
>
> dev @> apparently cargo is not designed to use system paths to find dynamic 
> libraries
> by default libraries are downloaded from github and stored in a cache 
> directory
>
>
> How problematic will this be for us? Our person in charge for the rust
> stuff works around this by including copies of the libraries in a folder
> named 'third_party', but I don't understand enough of the language and
> lack a build system at the moment.

These two links should be useful too, so it might not be that hard to
establish a build system.

http://doc.crates.io/source-replacement.html
http://doc.crates.io/specifying-dependencies.html

> David Craven <address@hidden> writes:
>
>> I haven't actually built rustc yet, because I know how long it takes...
>>
>>> +                         (ld-so (string-append
>>> +                                 (assoc-ref inputs "libc")
>>> +                                 ,(glibc-dynamic-linker)))
>>
>>> +                     ;; Remove reference to "/lib64/ld-linux-x86-64.so.2" 
>>> from binary
>>> +                     (zero? (system*
>>> +                             "patchelf"
>>> +                             "--set-interpreter" ld-so
>>
>> I think that this should be part of the a rustc-bootstrap package. We
>> shouldn't export binaries to the user, but I think we need a fully
>> functional bootstrap compiler.
>>
>>> +                     (setenv "SHELL" (which "sh"))
>>> +                     (setenv "CONFIG_SHELL" (which "sh"))
>>> +                     ;; Tell where to find libgcc_s.so
>>> +                     (setenv "LD_LIBRARY_PATH" (string-append gcc-lib 
>>> "/lib"))
>>
>> I think this should be a separate phase. We can then use
>> #:configure-flags to pass --default-linker etc.
>>
>>> +      #:tests? #f))
>>
>> To get tests enabled you can apply this patch [0].
>>
>> [0] 
>> https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/compilers/rust/patches/disable-lockfile-check.patch
>>
>
> -- 
> ng0
> For non-prism friendly talk find me on http://www.psyced.org
>
>

-- 
ng0