commit: aec6c83e31a883f9777198b45e8356660afb35d4 Author: Matthew Smith <matthew <AT> gentoo <DOT> org> AuthorDate: Tue Feb 15 20:11:08 2022 +0000 Commit: Matthew Smith <matthew <AT> gentoo <DOT> org> CommitDate: Wed Feb 16 18:02:16 2022 +0000 URL: https://gitweb.gentoo.org/proj/devmanual.git/commit/?id=aec6c83e
ebuild-writing/variables: Selectively lifting SRC_URI restrictions Closes: https://github.com/gentoo/devmanual/pull/271 Signed-off-by: Matthew Smith <matthew <AT> gentoo.org> ebuild-writing/variables/text.xml | 62 ++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) diff --git a/ebuild-writing/variables/text.xml b/ebuild-writing/variables/text.xml index e45794d..41976b2 100644 --- a/ebuild-writing/variables/text.xml +++ b/ebuild-writing/variables/text.xml @@ -431,7 +431,6 @@ SRC_URI="https://example.com/files/${PV}.tar.gz -> ${P}.tar.gz" </body> </subsection> - <subsection> <title>Third-party mirrors</title> <body> @@ -486,6 +485,67 @@ infrastructure</uri>; in that case, the benefit to using third-party mirror list does not outweigh the burden of maintaining it. </p> +</body> +</subsection> + + +<subsection> +<title>Lifting restrictions</title> +<body> + +<p> +In EAPI 8, individual items in <c>SRC_URI</c> can be exempted from automatic +mirroring and fetching restrictions (imposed by <c>RESTRICT="mirror"</c> and +<c>RESTRICT="fetch"</c>) by prefixing the addresses with <c>mirror+</c> or +<c>fetch+</c>. For example, in the following ebuild, +</p> + +<codesample lang="ebuild"> +EAPI="8" + +SRC_URI="${P}.tar.gz + mirror+https://dev.gentoo.org/~larry/distfiles/${P}-addons.tar.gz"; + +RESTRICT="fetch" +</codesample> + +<p> +Portage will be prevented from trying to fetch <c>${P}.tar.gz</c> as expected, +but the <c>${P}-patches.tar.gz</c> file will be mirrored and fetched by Portage +without restriction. +</p> + +<p> +The following table shows the effects of the prefixes when <c>RESTRICT="mirror"</c> and <c>RESTRICT="fetch"</c> are set: +</p> + +<table> +<tr> + <th></th> + <th><e>(no prefix)</e></th> + <th><c>fetch+</c></th> + <th><c>mirror+</c></th> +</tr> +<tr> + <th><e>(no RESTRICT)</e></th> + <ti>fetch & mirror</ti> + <ti>fetch & mirror</ti> + <ti>fetch & mirror</ti> +</tr> +<tr> + <th><c>RESTRICT="mirror"</c></th> + <ti>fetch only</ti> + <ti>fetch only</ti> + <ti>fetch & mirror</ti> +</tr> +<tr> + <th><c>RESTRICT="fetch"</c></th> + <ti>unfetchable</ti> + <ti>fetch only</ti> + <ti>fetch & mirror</ti> +</tr> +</table> + </body> </subsection> </section>
