[MacPorts] #55794: librsvg @2.42.2 - can't build on <10.7 due to dependecy on rust

[MacPorts]

#55794: librsvg @2.42.2 - can't build on <10.7 due to dependecy on rust
----------------------+---------------------------------------
  Reporter:  kencu    |      Owner:  kencu
      Type:  defect   |     Status:  closed
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:  fixed    |   Keywords:  snowleopard leopard tiger
      Port:  librsvg  |
----------------------+---------------------------------------
Description changed by ryandesign:

Old description:

> rust won't build on 10.6.8 -- there might be a version from several years
> ago that will build, but the last one I tried, that matches up with
> commit <272512b7cb6b6320a97cad307ba10fa96131f95a>, didn't build due to
> lack of thread_local storage. This is probably not fixable, unless I
> figure out a way to get thread_local into 10.6.8. Perhaps some usable
> version of rust older than that might build.
>
> There are not many ports that need rust, but one of the big ones is now
> `librsvg`, upon which more than 60 ports depend.
>
> Options are to find a version of rust that is useful that build on
> 10.6.8, or (more likely) to peg a version of librsvg at that previous
> version, that didn't require rust to build.

New description:

 rust won't build on 10.6.8 -- there might be a version from several years
 ago that will build, but the last one I tried, that matches up with commit
 [272512b7cb6b6320a97cad307ba10fa96131f95a/macports-ports], didn't build
 due to lack of thread_local storage. This is probably not fixable, unless
 I figure out a way to get thread_local into 10.6.8. Perhaps some usable
 version of rust older than that might build.

 There are not many ports that need rust, but one of the big ones is now
 `librsvg`, upon which more than 60 ports depend.

 Options are to find a version of rust that is useful that build on 10.6.8,
 or (more likely) to peg a version of librsvg at that previous version,
 that didn't require rust to build.

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Ticket URL: <https://trac.macports.org/ticket/55794#comment:3>
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