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Hi, |
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On behalf of the Lisp project (which includes the Emacs subproject) I'd like to |
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propose that preservation of mtimes be included as a requirement of EAPI3. |
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An EAPI bump may not be really necessary for this - after all we're just |
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specifying previously unspecified behavior - but it will help Paludis. |
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Portage already supports this, and according to my information pkgcore too, but |
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unfortunately not paludis. More details on the bug mentioned below. |
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Background: |
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Dynamic languages such as Common Lisp and Elisp, but also python (and ruby?) |
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compile source files to some form which loads and executes faster; in Lisp-speak |
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these are called fasl's (for FASt Load), for python these are the pyc files. |
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Need for recompilation is determined by comparing the mtimes of the original |
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source and the fasl. Both source and fasl are usually installed. If the mtimes |
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are modified such that the fasl is not newer than the original source anymore |
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then implementations will attempt to recompile these sources and will try to |
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write the output alongside the sources. This will cause a sandbox violation if |
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it happens in an ebuild or fail due to permissions when done as a user. |
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See also: |
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https://bugs.gentoo.org/264130 "PMS should require that file mtimes are |
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preserved on merge"; Gentoo Hosted Projects, PMS/EAPI; NEW; ulm@g.o:pms-bugs@g.o |
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Marijn |
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- -- |
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Gods do not want you to think, lest they lose existence. |
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Religions do not want you to think, lest they lose power. |
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Marijn Schouten (hkBst), Gentoo Lisp project, Gentoo ML |
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<http://www.gentoo.org/proj/en/lisp/>, #gentoo-{lisp,ml} on FreeNode |
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