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

["Arthur Zamarin" <arthurzam@gentoo.org>]

commit:     163a2ad620ae5c71cc1df66b0b21f1ef916789ff
Author:     Arthur Zamarin <arthurzam <AT> gentoo <DOT> org>
AuthorDate: Fri Oct 18 09:50:36 2024 +0000
Commit:     Arthur Zamarin <arthurzam <AT> gentoo <DOT> org>
CommitDate: Fri Oct 18 09:51:35 2024 +0000
URL:        https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=163a2ad6

dev-lang/rust: add 1.82.0, compress man pages

Closes: https://bugs.gentoo.org/922740
Signed-off-by: Arthur Zamarin <arthurzam <AT> gentoo.org>

 dev-lang/rust/Manifest           |  30 ++
 dev-lang/rust/rust-1.82.0.ebuild | 784 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 814 insertions(+)

diff --git a/dev-lang/rust/Manifest b/dev-lang/rust/Manifest
index 73973e0b0dbb..e15098bf9635 100644
--- a/dev-lang/rust/Manifest
+++ b/dev-lang/rust/Manifest
@@ -200,6 +200,34 @@ DIST rust-1.80.1-x86_64-unknown-linux-gnu.tar.xz 167553060 BLAKE2B abc6430cfbbea
 DIST rust-1.80.1-x86_64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B bb52100a14bfa2775ca7cab5cd0f9dbc489ec3b26a8687876c97b666435c44ce58d86fd9f11d4f4832e79c05fa3ddefd7157edc91a3da25ffeba07da61fbddf9 SHA512 08aad912e47341bff29ee1d1b52cd02df8e609747f7061e61ed6a401d798140a8587378aa992b0d52af955a44d2284eefa00f27a6e94b4ed561c06eed60ad6fe
 DIST rust-1.80.1-x86_64-unknown-linux-musl.tar.xz 248220632 BLAKE2B 7f0954379658df0a5cb0bb4bd49fdd1d216bfa5a200789124667d13ad97f0a5278f57e5b6278a969558c834de43a5d7e3f5ad3e331cc5a4c428dc097453a9394 SHA512 079cd3384c0b7f85d5fb2f02f27febe423ff533d71463097fbaa90449a955699fc25d8e4ae16489f7d7920c34c318c0f2e8185eeb9c6fd64c0851e4366c5eca2
 DIST rust-1.80.1-x86_64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B bad9fdebe33c251b8802ecb0150a074e86becac00874137f793b1805bf36373903fbcfd4744b1086851fd1357c6c81262a7eb321685640d856dc2ee3a37917a7 SHA512 405de0a8676755a63a4fc1e61dd358960efc90e4fd2417cfb4311bfaab5a744397e1f751afbe6a9515c1d92626a79fc782272261eed2f72b37b88fd77a84d7c0
+DIST rust-1.81.0-aarch64-unknown-linux-gnu.tar.xz 230690876 BLAKE2B b037b62f61558f1e26a2d56042a8423480e79f582f9f20248181730518782f55371e6bac982bce532310f939f1c562541fcc93f6f5ea17f6f9a03972fa4c52d0 SHA512 de2e9da3461eba35fef1f22dd4ea90668b8e3d121b1acb3a9d862c291c6784ce6b2ffd9dc5f1bed99625e746ef9ad7a65d74142479fe1d6bd6b678fdeee6cc15
+DIST rust-1.81.0-aarch64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 1979ad9d4c2aa30f963565a7058b3251edabd972d80d368d69074d975606962991b23a2ae9f7ebe7225adf06789b0090da48b0a6418e82ae45b2a3e67065714d SHA512 cf6a64e759b2118ce5fc5489f543cbef34900aec37f5416c0836f8990a589677a02f3fe8ca02898089c770507fb61c36a48b21a4f50acd38f1350f077a95a44d
+DIST rust-1.81.0-aarch64-unknown-linux-musl.tar.xz 208644312 BLAKE2B e732d3a4d3ddf0b1fdaac1324567bcea86bbb36dcdc921409bf8484a116dab346e3e5d6cdba0bed82d29f6d144a97db8b471c5c4bf2b339ef0ff86109dda66af SHA512 874cd6bcf870a3f416768a029ee2a32a88fd396e4fbf1150214281379db9f599f68b3dc9eb7c9152e9c17933ab11cfbbc80e19c1a8083343e583bc3994feca17
+DIST rust-1.81.0-aarch64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B ded7ede2657f16f9e054aae69b8bf2f50606674259b258f1acae75c5275966cbde256d957028b7220ff23ee83ea366aa80e6ad059e5880a76031a466aba4e528 SHA512 b31e6a06c8bec7d955bc73a6275535bbf6bf864f55abb1604ff3a78d26bc2a5d384f34df36336164b0dd3a475281949429bca75e736f1e8dccd48d7f84174ee7
+DIST rust-1.81.0-arm-unknown-linux-gnueabi.tar.xz 192297828 BLAKE2B d1ac0b2649039f3b13568906b97627e6dc0e9e0df4c9d784192240e86e1424fb0fc0816c88d45b7baa6c473f175d4765e62a64994bf5b58031a40a6a1fa864ae SHA512 bd64fbac076bf31da5acadd1d3a85adb692d58644c3fcc1f338473eb6ead3bcf4463ec1d7d46b5fb1d55498ff7684958f4b1591425c2aa8184405d01fae261a4
+DIST rust-1.81.0-arm-unknown-linux-gnueabi.tar.xz.asc 801 BLAKE2B d2c507d2480665a8a983b5eb2f2eb85265ab1e8aecf278ca44d9f2ca7b5b2cb76577962df6866e81e6daa3912942df3fe0c4bfa75fe18173c4a6c05284bd0393 SHA512 6ca22e556388877bb9be06144ffcafad07126cfedbf77a27c6c3ede0be3ab6803df7d6d3e55cbdb0f210c02a02c7dfd26a3c3e5fd48338b4b7fc71fcb469242e
+DIST rust-1.81.0-arm-unknown-linux-gnueabihf.tar.xz 192357588 BLAKE2B 5236afdc2fb725b2be3a2cab4d66a6ec518038e1a557ea4950f683fe3ec716a6ca0e6ebdf99b8068856c90c3e60220a5f8d1140c23c1c6a5e1f8d0c96fc80d9c SHA512 03d2709ad7ccb87161b65771b4b7882163c9a80a814684ac8687780d5f9da031c9e667bd35baa3af89c3d7275e377c50d36b47fac585454c623acf6f8bab8cf7
+DIST rust-1.81.0-arm-unknown-linux-gnueabihf.tar.xz.asc 801 BLAKE2B e819b6a30627c1af87f18dcdeff40eccd70249509f07b8157cceee047f756afe0ede798243a0b7a0b9842e42af5833e5a23c3b31771a1f4371711942b744b6ce SHA512 8eeaa15f932b9202acfd4d9210207d231a63cd5f3b77da4001e0d04a2e4f004c259150c83b608a5f84f59b29fe7933455409eb20b66739e3c238e13332e2273a
+DIST rust-1.81.0-armv7-unknown-linux-gnueabihf.tar.xz 197884288 BLAKE2B 060bc7c00c438011ecaad2a51b9edd2e96ac46bb1be602f14fd0eafebb2ef6d4bce979678d9ee7f99c6490565bb57b3f1abd1b3e2f387d247957763762b19082 SHA512 ad149183fa630b3b5c5258fb5b6ad993960c1fee979c4586206463bf76694ddba4854e451b79139a9455503bb3839b1efc92e9c27996f6557b7416078708b1a2
+DIST rust-1.81.0-armv7-unknown-linux-gnueabihf.tar.xz.asc 801 BLAKE2B f61a7fc711100cba3ae558eab15f165ac5c539c7adb1f82b4c83bc82b7a6c5eb294bcc43e351cb28e7886582b9f996b909e55896c267fa1456bc97d9accf34e2 SHA512 fb6851bf3cdc3c3c83ae9e3fdd04cdccbc6f1661c0656f4d9562c1d911c2e82f16854e88ac434d93804587697319545b6c659b68712198d7a62ba3877b4dedde
+DIST rust-1.81.0-i686-unknown-linux-gnu.tar.xz 224016868 BLAKE2B cbc147e42563ba1cd9e39e313d824c78d20e308c95e02bffef02d25b08e92309d5db0e5c0d5e0bfb30d593235bd3a58e6b4614043b3c12a6619406861c48a25b SHA512 b48d934b6644cce7f34db35ae69a4ddc9c9e71851dd1ca221e86d3a6cc107f29e0070515cec3d548e422161a031528927b93d4499e47eeefa87488dfb23591bf
+DIST rust-1.81.0-i686-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 3cfb29d5ff9f00e5f14631466a3a5bc5ae0a3dadeed3e2b22ee000ebc57bf02ca6db5f2ac01756a6fdc753bb4cd83e5e6ed8fd9e356b6325f5b7eb17e7714d7e SHA512 1fd1ca2016876f2456eb832bc9c6d1ab2be237a619d5f6fd4e1ee0f31bdad3d3c1c95d5f45069512d0c8a140115a594be3d1f888fd9b5a342ddd7cda1d5e5ce7
+DIST rust-1.81.0-loongarch64-unknown-linux-gnu.tar.xz 200885152 BLAKE2B 46b23442632d7c3368454a031643a795cf54b732d2c180960008e38be97070708a433d1094f529aa78479fbd89adf1c4ceac38af919f28577e8f766029cf40c3 SHA512 2e090423c8c5ddc1dc29d5ad19cdaebb9abad45bc7a229f911385f50cd2951b587a187ed8deb01aa41aa643465d7c7ac2b91d94c80265c03362de39b99eba82e
+DIST rust-1.81.0-loongarch64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 70aa0a550992b32ef666751336ebe2c81f3834d4117942cdc7f8b1eeadb1e5efa5fc63e283517e5535f406ff0e36b4577e559e24281e388a362463ed046fa340 SHA512 70c85d06e5b29968b6efb10efbece2761f81697395bf037581adf9e3aec0141266ae59644b6951e646749bcc23b038d5601b804c6d389b64c87b4be24847db42
+DIST rust-1.81.0-powerpc-unknown-linux-gnu.tar.xz 213304904 BLAKE2B b9d126cc787323ec18e978aaccbb8f92ccf753314fcc6a5d2d496400f4bc7885b543bd7ecae782a6c1dba737708358be26be68f69b47e982617e9a80af47d279 SHA512 a84bdad9877f7c8df2cd495447cca2a0e1448a8a13ee0fbcd2ca6f662317cbebf9425238edf3b5a1277b723b9c44eb4d363339c00a35e0ff86b6a568b61ec2f2
+DIST rust-1.81.0-powerpc-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B d2fba08b5be0026227e071993272a12e0d27af3b8e3b2fbd039a9c9a229317e9014d2e0f2c981387e6b46907e258e309424c2aef22d3512743d28ce035a85dc3 SHA512 156319d1904834794476d80a3b047a4099b983cb950ab3e9882ff34c0451eddff7cad8b160406abf23df40d195fdce925052177de2243ec8e8415edaac3c643c
+DIST rust-1.81.0-powerpc64-unknown-linux-gnu.tar.xz 210257620 BLAKE2B 686cb5e08befb0d4a19a7e34478c6916abd6aa7a05f09d83a7f8c4fcf59e144371a7442a1f14cd34b149dd056df119d5748ece4311d69af79725cb9b3b662126 SHA512 14f5feaeba8cb9e0a3326e5d74cba9be832fe6570308d5735f7fe7486fe240ef0f3cd2396c853bf34cc784f05fedd7a975dcb922775c59f3262a67fac1383839
+DIST rust-1.81.0-powerpc64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B d30e35436bbe3869278f4936b2b132d0a243bf0288470e837246a59239c2813025757f684f23c639517836e25895835a7ab0fd488834e2f53cfd1155e1c8a2fd SHA512 3b302c6c999df3e9aa0ab1a0638692cb6f88d44598e00bc862ecd2c384afffb259b8072738055800efc9f0c5b8de07a0fe3de1cab1bde28a9faf1951411a9bf6
+DIST rust-1.81.0-powerpc64le-unknown-linux-gnu.tar.xz 224307656 BLAKE2B 3891f93aa2bfb62fe23b463cdbd7db50182bb175cfadf2969b32d093897f517afb7dd97ecaefe90f220998f7436d41651c32e5a46957c2114d1ebc70834dd917 SHA512 9f6fa6bf0d5ba935b9ad5661287ad8aad5fc8d6b28fdbce6cd81730539d087ea512dba7b0133de08761d12b580b8b1c5d7ca35a4f1277a8bb683c109177ce83a
+DIST rust-1.81.0-powerpc64le-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B e96b56de2542596db2db9030382e8d87a9fee884888b58c0050b81487eaf22c2e6d62d11dfc7763a1f647318c2bd0b29e03dcbbe1809ea8162432874758caa7c SHA512 0e568a763276ca4e9c359d6dfc32d1f369ee04e160026c7660ff5f14175022175d23589df9c03c0c8c270d7e74a5e54754d23c8a1b0545b67b6d6c3d3ee82628
+DIST rust-1.81.0-riscv64gc-unknown-linux-gnu.tar.xz 223006516 BLAKE2B 5627ee83ed51726bcdb50757393f2333d76d705e18d65681c1872df6dd3e2beb9a18910b4d5e7da5c30f83b4c9f80117f2ef9c212cdd92eebc6cfce182ef579f SHA512 57cf209d364d43164402cddeed0ebe41b3e3ca69f79cec4f83055cf999493ed1cd87bc852b90707b2809cacceb39a83c4236712220105cd6a71be30250d4ae6e
+DIST rust-1.81.0-riscv64gc-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 0eaff43543493165dd86a2ffa30a4039b599302970e5c4380e8640c8c61881480c86b2ef98159ccf464c2fe39e23d14191aa11fccecb8ea8f56feebabfcd0d2a SHA512 4b5b7f01801692aa4087b5f010993d4b14b73be9c2dc964555ba140a939e434400cb4ed4756238725dcb2ab66e5ed67bb1d4688a92fcbc6c8af23f21fdaee568
+DIST rust-1.81.0-s390x-unknown-linux-gnu.tar.xz 212322092 BLAKE2B 11237159a0e70c84e296cd54ac52721a887057ad12269328cf67483d55e603df3f55381c4413871b83fe58a26a52c32ba5e77e7b3426016eb35a207275598c29 SHA512 1ca177d52cd897da497191c4ff869ad9e22047d37f4955e134d51a8ac5a5c24d9ff109a6e955e71df0ac0fa1776939ee39ae384f2fa12ac4740e2aecf92dfd61
+DIST rust-1.81.0-s390x-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B a982e7308aca7fac8a93d299a9dcb00f5bea71e1b7061fada84fdf2cbe1cc5bf7ea65abff857a234896b950e06e1bc76c0e796a9570039b2314ac17dc4e9f4ea SHA512 cf8cfdecaeb589db64df6ff0418d68332c8b516d401f0e9bccf9651bb085f57d3bef4941fa60788ca372a9a2407a406dfb24c153a64549925a47c15196815683
+DIST rust-1.81.0-x86_64-unknown-linux-gnu.tar.xz 170439044 BLAKE2B 5377d8972a729b0135c2461adcdc179719a0af99e8e9656b3c9eb487144c306d49dd42737d71195773e4b03e4287215955a7bab34094c19a9f07fba04a706a62 SHA512 a648b735d91348dfda6a66b4ca09f3449ff4abbd1d727fce8c91ec409a82bfc873988b06aa0907e145c486d035df12c68fa14466ccd2148ac0a99d5934335ae2
+DIST rust-1.81.0-x86_64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 9f39dedf33efd6fe4d66e10e3cb064851b1637a50e97d3bc19c48bf989e1e94d694df493eb437d2c2e58989933dbb05a7d25c276b26331475f44ea2d9d52909c SHA512 37908051e511cf223e92379ecf577ee1644d6aa13583b622b78d445367ca9e8a4253d77a5237831eeef15607c71e99ae3ef42451803466fad303bb523e13475c
+DIST rust-1.81.0-x86_64-unknown-linux-musl.tar.xz 251142276 BLAKE2B da30177914f8574ff896b64a60279913d48330818c6e96e10d3180964ed542697f29c6ca7e7c81fb1b814e1d9ceb8bbf6e119596b59564a64a08e30ce72ce4b8 SHA512 3b772269362556bebbff72a13abf05f745fd88128367ab1e5879ed3c0f3f5a1f7370faec1b2bce521a38662d58d94a8e4eb6b085c8e0f166979af490492e17c8
+DIST rust-1.81.0-x86_64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B e13afc29a5a06bd9453db22a6bc6894d8fb671ad9e3989852c9348ded5a22c908ec58ddc20b0f2d94e6bd291eb0e9fec09277f95ba9528bb7d333748ebb79959 SHA512 da0689376503be19af92d88e2731296c6a5286cec60d42dcebd4738b23e3e1a1bb303982e2a9e6bc14a8f7a8872321b9e9c25915cde43fa1772ddfdb149997c7
 DIST rustc-1.71.1-src.tar.xz 151983068 BLAKE2B 3dfdbc246feb84a79ae94c2de978c5585ee06cf6b683d2245869b62e28f7c79f89cc589f5431537713bf088236a0b824acefc1b68e418e9eb72e1eea98054e3f SHA512 fd0e5a16bdbeb539184513583089e55f681cb772810df357b6b1464853f7022ac02edab3dd155b2262ed0047e2a25dea3808dd078dcdfce9d399384465009db4
 DIST rustc-1.71.1-src.tar.xz.asc 801 BLAKE2B a88c073a70552d73e2d7695eceabdaa478f34501b7271fabf7f4a09f3efa545181f34353e45776b05918e6aeba88adb02f9731454f7085a7abf1602fc6589983 SHA512 9dd0406cf22f1daa7fcfd015fc1c6f8d36586aa99bf14c1491ee464c1f892ab759feb83e8b55b64713170fb777fdbe038fb5fd01a59c911b6599223baaba0677
 DIST rustc-1.74.1-src.tar.xz 155968724 BLAKE2B e05f2379ac94b286f85791a138e1928e5b5b5a7749f0981d82c40c2a12860f55bf96bb2f0e924e35a0f8b2447b13052d38adea909aaa3199105787bb5a4861b3 SHA512 14c7e7ed2f38ab60299d8c7d41d78f042b6b57ef822d577b5138e60bdde31cf141eccd4332a25bc5da3d58eb5313d63c1448b5dfe9e11b8055bb8ea133a9038d
@@ -214,3 +242,5 @@ DIST rustc-1.80.1-src.tar.xz 199234944 BLAKE2B 39891362f2a4bc249f5d943e3ded48d2a
 DIST rustc-1.80.1-src.tar.xz.asc 801 BLAKE2B 0fb361678e4b580c89ccc35fd1b29d24ab41af854e5a34d24192671c93140b7d2c91e740a51f1eaa6854d5970bb91a0510aac9cb6cbf2883e77a2b941d65b010 SHA512 9d5731db73b8a982b956cb2c4736c0fc7dedab785d9855508e6a1fc2d2163d561fdcd5b254ea5f7b1f27b3903d10d9d2403366e63f9c690ab722c401109a7c1d
 DIST rustc-1.81.0-src.tar.xz 216743872 BLAKE2B d9f52da9092d0723c862ebbb2dc351cad0670be6872f691b4c9f36faf06803f072720ebd04f06745c355d807991b38312cc830b12d6d3f50b0574bb7325340b7 SHA512 b8a837ced521d2ca2c7f228a0640da591384519e4dbc1ae768524d50616da6abbd2f7bdae3777caebc0447dac91bf76481282ce5a2264d7f30e173caa6321a51
 DIST rustc-1.81.0-src.tar.xz.asc 801 BLAKE2B 01cd9f386d3fd73f4eb43b14d7d479ebababb8640abbff170e697817b94b8a18edd801c6047ecf3c084a0a51764c5e4f3f4bd6b00e8ae000ef0b850e9506572a SHA512 19c0da9d67f2bd9fd79a2078f0f486ee7fad5646a09a609b7e30d9531851955ae8df0ec69f9ddc09e2fd6e74d529648335b0fda833839c88c54c84494ec1988e
+DIST rustc-1.82.0-src.tar.xz 219769328 BLAKE2B 611f33e134c2d459c9af1695c0a4d033df93afc986e91a17fceb0dd293fb4ffbd5f7475ef571d36cecf49da6c3fdb3801c98d7f72f9dd1c39e42502f649b192f SHA512 d158c7c71c1814bde2a3ec3cbeabe34949bd3201b730c0d7ec6baad4158bb28dd13696c430a6b99dc38b9d23ad7ddf8dde7d2487cbfbbbe9c3473016994210f0
+DIST rustc-1.82.0-src.tar.xz.asc 801 BLAKE2B 8138fb15b8d7ec15be45378fe663207a8e87e3c527348ab079995b1840a771ed6e9d5464eb8855ac9e006c0cfcf54b1a4fea489d31e6c9899cb03e6f4c737b67 SHA512 3cd6b27e72041baf9996efa10f25aca2e04f3e3727b60ecfd90c1bef9c52d216d2dc130802f935b110e35766645a27637a01661aa8d5acf02bf64b02a107c93c

diff --git a/dev-lang/rust/rust-1.82.0.ebuild b/dev-lang/rust/rust-1.82.0.ebuild
new file mode 100644
index 000000000000..22ba23ce4f98
--- /dev/null
+++ b/dev-lang/rust/rust-1.82.0.ebuild
@@ -0,0 +1,784 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{10..13} )
+
+inherit bash-completion-r1 check-reqs estack flag-o-matic llvm multiprocessing optfeature \
+	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}) )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+# 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 ${ALL_LLVM_TARGETS[*]}"
+
+# Please keep the LLVM dependency block separate. Since LLVM is slotted,
+# we need to *really* make sure we're not pulling more than one slot
+# simultaneously.
+
+# How to use it:
+# List all the working slots in LLVM_VALID_SLOTS, newest first.
+LLVM_VALID_SLOTS=( 19 )
+LLVM_MAX_SLOT="${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}"/1.78.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	"${FILESDIR}"/1.79.0-revert-8c40426.patch
+)
+
+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=( $(eselect --brief --root="${BROOT}" 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
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm_pkg_setup
+
+		local llvm_config="$(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}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${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 rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer","rust-analyzer-proc-macro-srv"'
+	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="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		[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"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${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
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		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 $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		# See https://github.com/rust-lang/rust/issues/121124
+		lto = "$(usex lto thin 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_ >> "${S}"/config.toml
+				crt-static = false
+				musl-root = "$($(tc-getCC) -print-sysroot)/usr"
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		wasm_target="wasm32-unknown-unknown"
+		export CFLAGS_${wasm_target//-/_}="$(filter-flags '-mcpu*' '-march*' '-mtune*'; echo "$CFLAGS")"
+		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$(makeopts_jobs) || die
+
+	docompress /usr/lib/${PN}/${PV}/share/man/
+
+	# bug #689562, #689160
+	rm -v "${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 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 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
+		"${EPYTHON}" ./x.py dist -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+		insinto "/usr/lib/${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
+		optfeature "emacs support for rust" app-emacs/rust-mode
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		optfeature "vim support for rust" app-vim/rust-vim
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}