On 2/23/21 12:05 PM, Zac Medico wrote: > On 2/23/21 11:46 AM, Zac Medico wrote: >> On 2/20/21 8:17 PM, Zac Medico wrote: >>> IUSE_RUNTIME will obviously introduce conditionals in binary package >>> dependencies, but we should welcome these conditionals because they will >>> provide useful flexibility. >>> >>> I think IUSE_RUNTIME will be a very nice feature to have for project >>> binhost, since it will allow binary package dependencies to behave with >>> flexibility that more closely resembles the flexibility of ebuild >>> dependencies. >> >> We can borrow paludis's notion of pbins [1] to generate ebuilds which >> install pre-built content, and the generated ebuilds could have USE >> flags that behave similarly to IUSE_RUNTIME in the sense that changes to >> USE flags will result in different builds of pre-built content being >> installed. A content-hash distfiles layout [2] could serve as a >> convenient way to store separate builds of pre-built content for >> multiple combinations of USE flags, and a generated ebuild would index >> the build by USE flag combination. >> >> Also, for the generated ebuilds, we can generate USE flags to include >> separate SRC_URI downloads for pre-built content to support things like >> FEATURES=split-debug and FEATURES=install-sources. > > Note that all of this can use existing EAPI features, since everything new > would be implemented in an ebuild generator that generates a single > ebuild to index pre-built content from multiple binary package builds. > >> [1] https://paludis.exherbo.org/overview/pbins.html >> [2] https://bugs.gentoo.org/756778 >
For generated ebuilds, we'll have a choice to model things as USE flags or sub-packages. For example, content from FEATURES=split-debug and FEATURES=install-sources content might make more sense to model as sub-packages than USE flags. It makes more sense to generate a sub-package when there is a need for the sub-package to have USE flags. For example, a split-debug sub-package can have USE flags which index pre-built content from builds for multiple USE flag combinations. Similar USE flags could be useful for an install-sources sub-package if the source code has patches which are conditional on USE flags. -- Thanks, Zac
signature.asc
Description: OpenPGP digital signature
