Am Montag, 28. Juni 2021, 15:03:59 CEST schrieb Michał Górny: > On Mon, 2021-06-28 at 15:00 +0200, Agostino Sarubbo wrote: > > Hello all, > > > > long story short: > > > > when there is a major change (new gcc, new libc, and so on), tinderbox > > takes a lot of time to test the entire tree. > > > > Let's do a practical example: > > A new version of sys-devel/gcc is added to the tree. > > > > There is no way to know how much packages compiles C/C++ code, so the > > easiest way is compile the entire tree. > > > > Instead, imagine that each ebuild declares a variable called SOURCETYPE ( > > or similar, or in metadata.xml if you prefer ) and with a tool like > > equery/eix we are able to get the list of all packages that compiles C > > code. > > > > The same thing applies to other languages like python, ruby, go and so on > > where compile the dev-$language category covers a lot of packages, but > > there will be always other ebuilds that uses $language in other > > categories. > > > > What do you think? > > It's a worthwhile goal but it's practically impossible to get it right. > For example, right now we've had quite a few cases of Python ebuilds > wrongly declaring <stabilize-allarches/>, i.e. people missing use of C > besides Python. > > That is, unless you can figure out a way for Portage to reliably detect > SOURCETYPE and tell people what to set.
When I read this my initial idea was like that: -if SOURCETYPE is not given it is assumed to be *, i.e. the package depends on any language when rebuilding much like it would be now -if SOURCETYPE is given then tc-getcc and friends would start returning /bin/ false for every language compiler not enabled, or better just call die -similarly CC, CXX and friends are exported to /bin/false, which should catch a lot of ebuilds that use the compilers without using tc-get* now Sounds like EAPI=9 ;) For now one could stuff this into an eclass to get the ebuilds right until portage actually makes use of the variable to simplify the build tree. Eike
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