[gentoo-commits] repo/gentoo:master commit in: dev-lang/rust/, dev-lang/rust/files/

["Sam James" <sam@gentoo.org>]

commit:     83a308fe5493162778df3d963bc5c224b3f97f9b
Author:     Randy Barlow <randy <AT> electronsweatshop <DOT> com>
AuthorDate: Wed Jan 31 02:14:29 2024 +0000
Commit:     Sam James <sam <AT> gentoo <DOT> org>
CommitDate: Sat Feb 10 04:48:55 2024 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=83a308fe

dev-lang/rust: Add 1.75

Bug: https://bugs.gentoo.org/922880
Signed-off-by: Randy Barlow <randy <AT> electronsweatshop.com>
Signed-off-by: Sam James <sam <AT> gentoo.org>

 dev-lang/rust/Manifest                             |  30 +
 .../files/1.75.0-handle-vendored-sources.patch     |  45 ++
 dev-lang/rust/rust-1.75.0.ebuild                   | 762 +++++++++++++++++++++
 3 files changed, 837 insertions(+)

diff --git a/dev-lang/rust/Manifest b/dev-lang/rust/Manifest
index 015d5060fe99..c0e77d3a9ec4 100644
--- a/dev-lang/rust/Manifest
+++ b/dev-lang/rust/Manifest
@@ -88,6 +88,34 @@ DIST rust-1.73.0-x86_64-unknown-linux-gnu.tar.xz 161588916 BLAKE2B 10c1c57641e2a
 DIST rust-1.73.0-x86_64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 22e68ec4e6bfa49c15344675abd20ef9449d928943dafc64bfa1cf78dd36ccbce4802af8d4adb84762194dabc512efa74655a93785c127e6942ebeca8f6e3303 SHA512 56e53a1047a23a7f37250a785de2422ee2a3a72fdedb9a02530b3cc1cd978370cbbfc0e67d75f3d537f48c6c78f91d3de949ac2c9392a79404609b169cedaa40
 DIST rust-1.73.0-x86_64-unknown-linux-musl.tar.xz 236190528 BLAKE2B 062b54b31742bc846bdff63fb38be3a3a1f6d2f061da26cee6a0b089feee995fe3dbea536675495ed75d47d657c3d4bf04e36f6752f59f8308f7eb9a397d6e38 SHA512 abd01e0c98a8aa447d01613e24302ca81a8cce7d41179ed60834a39ed1942de0459add3c498a63f94bb1ee8662a2750b375b49894e3108da45f47d3a643cfdba
 DIST rust-1.73.0-x86_64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B 9822879d0f14eb5387a623d111ed7a3b1ff038522c071608bd254c4b3479da8a1e9ed78c69c267c1156c45a9cbb2f7db00d123b85f28021a743d392d1cb65c75 SHA512 ff65fd3ca47afeb10f7434d8d4f91b6649739167639c3eadf178aa1339553c5316bd0bb393cd53fcce17c126dcf8db1f1dca6e87044b14762bb20ed8f5a500b7
+DIST rust-1.74.0-aarch64-unknown-linux-gnu.tar.xz 216169516 BLAKE2B 830b97f710a3249c4d1df6b37dc9c429cd8d8c8edb0a77de8d04460bc2132ababa6777dc92b82b8a3b3839256f2dc522128d31a81c8b5ae9820a483368292cc2 SHA512 40a98f9238af1a60a0506e3e1b88e1d61ce68ed6380c78c77b638b1fccbc8cd0e39d7c042a70dcde454a3fe95b6c49950820f728b847dda218fdd91fef7066de
+DIST rust-1.74.0-aarch64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 6b15fd93514659cc64759b7c7c3e26781b87f58022d91bbeacc64906c681ed37b825031e9fd78051671b35c5abbf4d76c11e320742d5b482f36e98ed9d8691e7 SHA512 2480367abacb766e015c3287568cc2ea2f186b48cafe709595641e40471b4da1e29b5e41d2a3b5eb7d9f9329725e46e4110800952e554e84212e3a1ad36f06c5
+DIST rust-1.74.0-aarch64-unknown-linux-musl.tar.xz 196821888 BLAKE2B aa8444b243a670ce5130a0436bbe100b75912a03bf8b3f99f5dbef9b3459fbb3b6e0d0fae6e9d9ec368e95b20f563a8821ed7698cf699b169887dbc63a7a71f4 SHA512 22255c52052977b272dc740853359c15e2764164b38afd473830dd69830d4897d60dc037f0e6190df8a31ee22f80d69f60d7dad968a41b91f23368328e11eef5
+DIST rust-1.74.0-aarch64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B f3ab9235640f5314de7a01564fa60563f123d7d4d8755b4263a687fb22b4d874cbaaf9184436e62c8e65d23c64685d33333f3585dcc518fa90229d1a045186e8 SHA512 2ba35243e3d626347a442bb9b798e698e654d65d81d3d2391b791f33636a74e51b2c5f6270d37abe641f6e243dc70169e990e9fe1ed0392936f272b65216bd08
+DIST rust-1.74.0-arm-unknown-linux-gnueabi.tar.xz 180475660 BLAKE2B 33ac40eec4641d71ed03226dcc0cef62fb4b108835ca8532110237c41c5c1eaf5f2a78ae3b97fd69043898439816702df6d1ce8bbfea36622736b62db1de7d7c SHA512 4f90237267516870a9d236add52b70c4e3ffe2b12ce0280faea4f740aa81b0ab8fdbb0e6e58425c8e33a0795a4bd18cf766d222b9d6f8ec9e972d4ce10ac0640
+DIST rust-1.74.0-arm-unknown-linux-gnueabi.tar.xz.asc 801 BLAKE2B cb1c623548cd2dad04ba2130883fe6ca70466ad8e8d10a0bcbe42ecbf7f3e10c5f62eeccb5300d133458e26c9b340ea9f5aeb3b3bd35420e39ca4c2a751946d9 SHA512 eccee9e6ec905d4b30b620236bb2c3648f4c5e00518c2e1b0ad5d009865d56abfc866f1a100acc8c7ef559590052cd858cd247bd091d31821b27bfef00b9487f
+DIST rust-1.74.0-arm-unknown-linux-gnueabihf.tar.xz 180651920 BLAKE2B 34be0e8e7621bae3a7ae0c0c5fb94df55b42035d4a6219d773e109cf8e17082c81e0b8e831421f702bf269e095b0fd6bb798a8ccd78f12b099e5cfa638458572 SHA512 c6f7f9aa592985206a3af47f8d61e094e0fe3c714deb6c569a8a0bef8f5dd897f8f27ab33dd184eb28a9267c877f21527dd421baa312bbdf08994cb69aeb6ba0
+DIST rust-1.74.0-arm-unknown-linux-gnueabihf.tar.xz.asc 801 BLAKE2B 81703b2035f44dd3272cce97671205d6f838f1ef09dc22e25316567119da12ecae6c38d5cd54a82f70253a65357c60cac3d2c6c91ceb90614baedb5fb3707306 SHA512 aa7d6320d868f4b05274a964570f6d1e5bb4b0f72da0875d43356ff2a48a4d1a2605dce1097e88fdb3cae502c05373540799175bf205676088654a0288718995
+DIST rust-1.74.0-armv7-unknown-linux-gnueabihf.tar.xz 184856340 BLAKE2B 5002309dbc31916ff4984637c646136c0be0ff682d105f579f3e66dc3aac51feffd9fe70e1e4020bf554155bab88fceafd0a223ff6f2d8d3c885233b4592303e SHA512 8beb260a0f07b11b91a21ff7a6bc863d412006a4b7a582c769ac6991ef8d93ccbdf3b3e9921ba16fd2d3c4354aec706298fce182c910c26e4fcc61575e6f6213
+DIST rust-1.74.0-armv7-unknown-linux-gnueabihf.tar.xz.asc 801 BLAKE2B 6945a1ad0917f5cca07e1d8e292644054a613ccbc7d6d8d8b4bbe1d0e580bd1e7e40c62383fd9ec3a465d9af1db02f28eacb98bfcd5bd9f4c4431f74824f1a7e SHA512 c3652f8a7336e5ba4c45a31a089d99fd9e36bf8f7b593a3bcbb728a24d3d76f81ac908b0ae97905b27ec0697364ce01ef6adcc1853756da300989b4ab4bc6d15
+DIST rust-1.74.0-i686-unknown-linux-gnu.tar.xz 211708688 BLAKE2B ef83549b86e4da0c8ea61d14dc302dd10459798fccabaafaec7e8f24ff2a4695e4378706c48092b8afd3dffac7d995e53100bf0d5f3caf73dcdfda764cd3e656 SHA512 b97e1ee46d8ea20af6a61ee933c66b5314f55c3c3879bd8101943a769dda3ded7c91899fb7eb26ecdbe1f01f35e9784398cb85d494b03bf0673d2c1c8ed27f9a
+DIST rust-1.74.0-i686-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 9a0916d77499972812edda89c04563d41e899a68f73fc8867d878e938ef6b37057e97e7209b033d6624674f472b9e8441fd89bc0a82a9ec17c85381b07809367 SHA512 562931b7a78a92ae6f07e502fb044c1ed45ffca94690cf8316c55c85ed37ce426ec72b526a10c4da8bbe947f1b253e618338028ea064eab8bc446ffb291b5aa6
+DIST rust-1.74.0-loongarch64-unknown-linux-gnu.tar.xz 161629420 BLAKE2B da3b11b1c8ce2d3e1f30885279e4524f795bb8680f0f076fc154c7ffcf067d5933f2a89c2c5dc142859adebeda9eebd9559193a5829a114bc670262872069fa1 SHA512 a3d75491371d74d14d5ea3e1578040b1baf67166c899e0c590599d1a5efe5d6fa11c6efa9f2525ef2011650cf62d7e1384f71f9bd33357296915a9564b2f0c3a
+DIST rust-1.74.0-loongarch64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 58d483bd3f21344f3a2da5ee4a88b2a536baab0503d0fa52f7c97ac7f6cee308401246cedc5b2c38d7d6ecf57290e2e0f48f8a84c72cfd5aca7e2d2310723963 SHA512 28fc0773a95b0822b262dbd48f37b637ec95cfe7694b2b2c9d5b18e0492c802d29dbb0013382fadf2037250faf9b3019cd38882102f864136be1e64623c89882
+DIST rust-1.74.0-powerpc-unknown-linux-gnu.tar.xz 174911076 BLAKE2B 3539adb3fdcdaf6163a58aeaa2d5f1a7ca5e13119d19a559b328d2e994ea5c0147ffc410391c6a7d2714f814b4254d847791a3737596e4fdc97defc7e3838000 SHA512 95b76ca4f0667ed63e76b99ef7b3667d88e13592de941a6cdb85e970ac766667c2d1f7161e20e1d8d63d5968fd5c82f2c0bce5d84f11d59b438b0ef16679faf6
+DIST rust-1.74.0-powerpc-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 58262a22b6a589bebf51a494e4bf0217b58cdf214c2eb0bbfa9d9fea20f0a21ab0ce76271772c452fc2d5a0b049bf09c84b342eced0995b9456e68747aaf4c63 SHA512 3c694d9ec22c03d07cbd64dde1bf5f532beafdf3d974e77e5fc09adc1484bb1572625d62fd1e0d13613c4b63c2efd82f58ec9e4a2a8ff87b2527b2da7896e703
+DIST rust-1.74.0-powerpc64-unknown-linux-gnu.tar.xz 176265620 BLAKE2B 2885cb229d612e702e47e7fcbb18a60c9b5aefaacbf14ae146b3078b53e3e64d05273268d4e2e0c61dac1f7f1a5238f82c0ab7e0a05aca25478e661e6f5c7600 SHA512 ce6c5eab3de7ce6800137aa02c19a9c1513738af140c9cb1cf1c89f33f71de50d022a6af92eaadb26898422c7beebb6d6870f2d766e3eb4e363afcffe75a2627
+DIST rust-1.74.0-powerpc64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B e3c29be027c55bd51b1520c9d573b2e3c6b8c094568d57b940db9b895532405717676cfbbb7486b78fed6d3c79453a760132ffe2b2b86bfbf67a7872809cc5ff SHA512 baed4414207068429bf5c4bf445650936bd1ace3bde19f8fdede269a4204e37964c6b172d2d347fa93e472128fbe7ae5696be82d5ef873aa6a3c588a1621f1e2
+DIST rust-1.74.0-powerpc64le-unknown-linux-gnu.tar.xz 187255560 BLAKE2B 29fd06bd7a3f0229b0c1513045932a7786ce10501469f46ffaa9d747d7badb63c69a0d1f13ece3b09ee811b492e1214ad4bf2b875269caf829e5a6eea449f0f1 SHA512 96a18b9938f8e7c6772a7215d866f6bbbb28d379ebfe4f0fe0e32fcb4fdc5f3b7441edbdce3b04fa30ef91f8d5c2a2c1fe75ad0cce1ce1f2ed75cbbeceb1e64e
+DIST rust-1.74.0-powerpc64le-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 0cd802412a19cb27510c91831f953ece98b0ac65c8ad6f91e1b136694403b71b1fd29aa8eccf45384eb59ed72e7a6e4218226826e243d1bd232444c277f8f0e2 SHA512 a73c22b8b0a319c3b0997e463f4cafbae8ce3fd5e66d42db07aa60b6e366a92afe640ac36b0a941879df3510d9341b3cb3c895e2c864c0ebd4b2bab7c5426dd9
+DIST rust-1.74.0-riscv64gc-unknown-linux-gnu.tar.xz 181305504 BLAKE2B 708e30456c32d7fd6d8d07e18bfcc73d339e5c6f5ea92fb3958b538c8a3bc4b79d02c79e2de9a5e2480ec7ae6cab6a36d345cb183a811d738aef0536fd143701 SHA512 050ac10adbed179c646c6348fa43a1bcfa18084de444032d8c064b5f1a7b059aeadbf9e06a75079b2dd9170e1cb078205c2a675e0c39fa694c813f2da2d616dd
+DIST rust-1.74.0-riscv64gc-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B a3be1f47f23d62f46b6c2b1dae6d07243c90690f3d097b24b4f7b2a22471d39160593e2703b5baf6a3c701f167d8941241511bca5c78ba79a25da37387ea1cf0 SHA512 a9c4c3e22bafb1c53c71d9836873e84c6a1b3adffeb361394d584b829b5239df39cfacfbddb96c93f4ecf48c4ea98421da3c46245f32659aed49961198db18de
+DIST rust-1.74.0-s390x-unknown-linux-gnu.tar.xz 201169576 BLAKE2B c8d5b9d621fe3a1f3ffe28a09cc0660636d33c6aba5463a99570d4061d736847b95cbb7bb3cd0c2d6a007aa8c4b08364867a5b6d4d12b7f34887327ecfdf041a SHA512 96c00ceb9bea19637d92151ff8ac289e0bc62f05e08a4ebe0221d08271a4e80e0fd628ef2c59240796dd289b6d16efa6d6191aafad1adb11f2d8fff92df3084d
+DIST rust-1.74.0-s390x-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 779fef510b53e24a6b20d868a3dcb349ececfb35f5e7059ccb0ef125d24361a8732e8459051a8b1e4da2ad1c6de342f15f857d4973ac4a1b9c19236cb66c4040 SHA512 bd266f3b6c09c73d400541a436890c85fd7d7b82241ed9952ab41481a1f19df8b477228a54ea4c215f0313aa7515d6b659e8ebc78f6186ac2b9fb2ec04cfa902
+DIST rust-1.74.0-x86_64-unknown-linux-gnu.tar.xz 155920616 BLAKE2B 6213da724e5052fd72aa35816aeded0136c873bdac5536b8d6efd8e830d1db6b909313f58462b5ebeeab148ded4d29a36f2dd5439ac6c1d1c68f73d137928376 SHA512 27dace338e78e437d5b8214778f75e79dec604ca54023ac6046c6761ad02db4790f3df902589a934ef2ec7e162ae201f9a5f6b0bb2e688d5c1eca90462cd75b1
+DIST rust-1.74.0-x86_64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 9d81f9c2861963a34b0bf9bb15a584db502d388b15f73ce98f78cae6bea0357403d9bd0e6f8ea427a9f4db5946ba7dbb4242e7fb4400b561b7431235f0dbe2d5 SHA512 e1e5e3850715379d30c557791a4eeba2bea090ac85e09a982579a703b2582eddfbc060e21420f418cb492e8d4abe87d5bd81b5acf6ee8bd17b80bb6e0f65b721
+DIST rust-1.74.0-x86_64-unknown-linux-musl.tar.xz 235589268 BLAKE2B d695695ebbb3bf0dea28b9d337f82d5828e6ee70cf7220c849a6008b32f2b590ff57ee35efd58d9a38cd17e0f77ac1187765e8fd6470e0ee2c6cf75f3e3f1489 SHA512 3a8d4cb87d1295b07f0ed48f6e01e69801be3c93744948ef0145217b0cb17581c11c618a07b72edb0945c2ffbe85c59ec1cfd99ef6a60c2e96486f9d5d04d38a
+DIST rust-1.74.0-x86_64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B 0ba1390f67b88fc694df26df22c99ae40f56ccdffb479d9228a17a153de965f8c31dfb4d2c65dad4819d42a0b66b96ff9d3e2c404848dd91141220fdce40710f SHA512 efc779bd0e6fb41297a67efdf731abe3857dace889be284d8ac1e6c239a35749185ad5ac3b82c3b2e55edab3f0e51754c8e53e07d207cf8b4b68ede20cdb8591
 DIST rustc-1.71.0-src.tar.xz 151962928 BLAKE2B da8d83cd6621947816630ae487efe7d087266c1352949cedbbd441ba7c7f7c7beb13b9470e66e2f3359c37a050d0e44d22481c418532d3ebb339a456ab092648 SHA512 2c93bafdd248563765a285add48ca77c1e4bad4d5431675ae6a5cdee4cfe7a41e6bcc880a489ca1069a307fd9a005f2d5f8e230dfc95b4a69152b4f9ca49ac44
 DIST rustc-1.71.0-src.tar.xz.asc 801 BLAKE2B e5ddc4b18a6caeeb63c5aed5b5d15989d086f408787d2e603e50e7b8548dc078683062627280fd2a0393bec01c314eb1cc59f9b0e3146abf07b8365a0b44c640 SHA512 cb1b208c8b2bfccf02c73c4246fb238edb0dd10e292c1ef781920964e54e40add3089d988769982c0ce06b719014685b1c37daa2d08b513d86ad73808f4ce3ac
 DIST rustc-1.71.1-src.tar.xz 151983068 BLAKE2B 3dfdbc246feb84a79ae94c2de978c5585ee06cf6b683d2245869b62e28f7c79f89cc589f5431537713bf088236a0b824acefc1b68e418e9eb72e1eea98054e3f SHA512 fd0e5a16bdbeb539184513583089e55f681cb772810df357b6b1464853f7022ac02edab3dd155b2262ed0047e2a25dea3808dd078dcdfce9d399384465009db4
@@ -96,3 +124,5 @@ DIST rustc-1.73.0-src.tar.xz 154319536 BLAKE2B 077bdedb36fdbc30db3c6331ac6014615
 DIST rustc-1.73.0-src.tar.xz.asc 801 BLAKE2B fac2f8652e9a103e8a678b30222e1a505671253827d1d092c4964230a535a85e21cedf00b70f108ac5cb2db961b50e482223e8eaa5b0d585777dd43d80c5931e SHA512 e80ef6280c50522a575f040610184fcf5f45444db2534c6a334e66a69f3338b43d8b34cf035685f28d0e8f006427bbe413611c49fe028c9f72810d74ccfab15e
 DIST rustc-1.74.1-src.tar.xz 155968724 BLAKE2B e05f2379ac94b286f85791a138e1928e5b5b5a7749f0981d82c40c2a12860f55bf96bb2f0e924e35a0f8b2447b13052d38adea909aaa3199105787bb5a4861b3 SHA512 14c7e7ed2f38ab60299d8c7d41d78f042b6b57ef822d577b5138e60bdde31cf141eccd4332a25bc5da3d58eb5313d63c1448b5dfe9e11b8055bb8ea133a9038d
 DIST rustc-1.74.1-src.tar.xz.asc 801 BLAKE2B ddf73175b164233babf31ca3a381b03e20c0f36d017c1d5f85d6ab11f0986d861ab23b11c061e6b2444ced70c3d6a494cc3de4ec86f0deb221a805491bd75420 SHA512 9a96ff9ba9a4e2af4e267b2ec126fc0675c78d0eb767703daa2f28491c3d85c2ab00fbd8584390bf658812ec6c4ab6c57e43b386db59fd505bd3134a8873a09e
+DIST rustc-1.75.0-src.tar.xz 159624388 BLAKE2B 8937b80585eddaa3e1f1ef948899d14a170308518c6fef9fe569560cdd870053776956743f796055f2119399b9ca6c0df12fedd789ae46324d071e5126c4e495 SHA512 7b0f25d91b1b5c317980fc88e059200bd43b56a70b445fbc72fb9b96e09775bfd3a98e9bd9d662af80f0ce3aef527c777ee82777e96ca876f47a972d63da8606
+DIST rustc-1.75.0-src.tar.xz.asc 801 BLAKE2B 434da96b1dc93a5aeed07f4961b087fdd15870e407283ecc00df08dbc1e9f6c65fe459b3a25d39ee55900d53ee583207098ecf3d63f5d6ea114ef0b8398b6a63 SHA512 a0e948553af77ca6e2daa82c69d79079ef7d4ec61957bdff99efd73748200d6c7caa9282daeb3fe3ef849d81a48e66a25336df4c7b6f62f975266aa8b9b93d3a

diff --git a/dev-lang/rust/files/1.75.0-handle-vendored-sources.patch b/dev-lang/rust/files/1.75.0-handle-vendored-sources.patch
new file mode 100644
index 000000000000..c68ceba15e82
--- /dev/null
+++ b/dev-lang/rust/files/1.75.0-handle-vendored-sources.patch
@@ -0,0 +1,45 @@
+From 4b7e0a0b56aa2446e670dfd6558380a1039a86aa Mon Sep 17 00:00:00 2001
+From: Arlo Siemsen <arsiem@microsoft.com>
+Date: Thu, 4 Jan 2024 11:40:56 -0600
+Subject: [PATCH] Handle vendored sources when remapping paths
+
+Signed-off-by: Randy Barlow <randy@electronsweatshop.com>
+---
+ src/bootstrap/src/core/builder.rs | 19 ++++++++++++-------
+ 1 file changed, 12 insertions(+), 7 deletions(-)
+
+diff --git a/src/bootstrap/src/core/builder.rs b/src/bootstrap/src/core/builder.rs
+index 4e20babc55a..3770d0687b2 100644
+--- a/src/bootstrap/src/core/builder.rs
++++ b/src/bootstrap/src/core/builder.rs
+@@ -1799,15 +1799,20 @@ pub fn cargo(
+         }
+ 
+         if self.config.rust_remap_debuginfo {
+-            // FIXME: handle vendored sources
+-            let registry_src = t!(home::cargo_home()).join("registry").join("src");
+             let mut env_var = OsString::new();
+-            for entry in t!(std::fs::read_dir(registry_src)) {
+-                if !env_var.is_empty() {
+-                    env_var.push("\t");
+-                }
+-                env_var.push(t!(entry).path());
++            if self.config.vendor {
++                let vendor = self.build.src.join("vendor");
++                env_var.push(vendor);
+                 env_var.push("=/rust/deps");
++            } else {
++                let registry_src = t!(home::cargo_home()).join("registry").join("src");
++                for entry in t!(std::fs::read_dir(registry_src)) {
++                    if !env_var.is_empty() {
++                        env_var.push("\t");
++                    }
++                    env_var.push(t!(entry).path());
++                    env_var.push("=/rust/deps");
++                }
+             }
+             cargo.env("RUSTC_CARGO_REGISTRY_SRC_TO_REMAP", env_var);
+         }
+-- 
+2.43.0
+

diff --git a/dev-lang/rust/rust-1.75.0.ebuild b/dev-lang/rust/rust-1.75.0.ebuild
new file mode 100644
index 000000000000..0f5a1abd1f6e
--- /dev/null
+++ b/dev-lang/rust/rust-1.75.0.ebuild
@@ -0,0 +1,762 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..12} )
+
+inherit bash-completion-r1 check-reqs estack flag-o-matic llvm multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SLOT="beta/${PV}"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	ABI_VER="$(ver_cut 1-2)"
+	SLOT="stable/${ABI_VER}"
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="~amd64 ~arm ~arm64 ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind +lto miri nightly parallel-compiler profiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+# Please keep the LLVM dependency block separate. Since LLVM is slotted,
+# we need to *really* make sure we're not pulling more than one slot
+# simultaneously.
+
+# How to use it:
+# List all the working slots in LLVM_VALID_SLOTS, newest first.
+LLVM_VALID_SLOTS=( 17 )
+LLVM_MAX_SLOT="${LLVM_VALID_SLOTS[0]}"
+
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+# (-) usedep needed because we may build with older llvm without that target
+LLVM_DEPEND="|| ( "
+for _s in ${LLVM_VALID_SLOTS[@]}; do
+	LLVM_DEPEND+=" ( "
+	for _x in ${ALL_LLVM_TARGETS[@]}; do
+		LLVM_DEPEND+="
+			${_x}? ( sys-devel/llvm:${_s}[${_x}(-)] )
+			wasm? ( sys-devel/lld:${_s} )"
+	done
+	LLVM_DEPEND+=" )"
+done
+unset _s _x
+LLVM_DEPEND+=" )
+	<sys-devel/llvm-$(( LLVM_MAX_SLOT + 1 )):=
+"
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	sys-apps/lsb-release
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.70.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	# This patch shouldn't be necessary for later versions of Rust because its
+	# code was backported from master.
+	"${FILESDIR}"/1.75.0-handle-vendored-sources.patch
+)
+
+S="${WORKDIR}/${MY_P}-src"
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi)"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use profiler && tools+=',"rust-demangler"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		changelog-seen = 2
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		CMAKE_C_FLAGS_${cm_btype} = "${CFLAGS}"
+		CMAKE_CXX_FLAGS_${cm_btype} = "${CXXFLAGS}"
+		CMAKE_EXE_LINKER_FLAGS_${cm_btype} = "${LDFLAGS}"
+		CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = "${LDFLAGS}"
+		CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = "${LDFLAGS}"
+		CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = "${ARFLAGS}"
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_target}"
+		host = ["${rust_target}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = $(toml_usex profiler)
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		default-linker = "$(tc-getCC)"
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		lto = "$(usex lto fat off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+	newbashcomp src/tools/cargo/src/etc/cargo.bashcomp.sh cargo
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use profiler && symlinks+=( rust-demangler )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib"
+		MANPATH="${EPREFIX}/usr/lib/rust/man"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use profiler; then
+		echo /usr/bin/rust-demangler >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}