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Hi, |
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|
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Yesterday I've finally found time to bump SCons to 3.0.1. Unlike |
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the original non-maintainer bump which caused huge breakage followed |
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by completely ignoring the problem, I've chosen to go more conservative |
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way. That's why 3.0.1 does not declare support for Python 3 yet. |
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|
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At the same time, I've decided there's really no point in further |
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agreeing with the breakage caused by bad design of SCons, and expecting |
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developers to work around all of it. Instead, the followup revisions |
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of dev-util/scons introduce Gentoo-specific patches that -- through |
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GENTOO_SCONS_ENV_PASSTHROUGH=1 envvar set by scons-utils -- override |
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the problematic details of SCons as outlined below. |
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|
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The current plan for 3.0.1 ebuilds is: |
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|
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3.0.1 -- 'vanilla' release |
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3.0.1-r1 -- passes environment through (instead of wiping it) |
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3.0.1-r2 -- tries to respect CC/CXX/CFLAGS/... |
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3.0.1-r100 -- will introduce Python 3 support (not committed yet) |
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|
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Note that the -r1/-r2 changes are only applicable with |
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GENTOO_SCONS_ENV_PASSTHROUGH=1. Otherwise, the vanilla upstream |
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behavior is preserved. |
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|
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I personally don't think that the -r1/-r2 changes are likely to break |
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anything. However, if you experience any unexpected breakage which |
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doesn't happen without the patches, please report a bug to me. If no |
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issues are reported a while, I think it'd be reasonable to start |
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actively depending on those versions and remove some of the Gentoo |
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patches to various SCons* files. |
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|
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Furthermore, if you have any other suggestions about reasonable default |
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changes, I'm open to them. I think we've already spent too much time |
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trying to fix individual SCons build systems, and it's time to focus |
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on applying a global SCons-fix instead. |
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|
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As for -r100+, the Python 3 support is going to cause breakage. I've |
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submitted scons-utils patches today that integrate it with python-r1 |
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suite of eclasses (alike waf-utils). If those are accepted |
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and committed, we will be able to work on enabling Python 3 support |
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through SCons consumers. |
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|
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-- |
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Best regards, |
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Michał Górny |