dev-lang/rust: add 1.55.0

Closes: https://bugs.gentoo.org/812863
Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org>

3 files changed, 788 insertions, 0 deletions

diff --git a/dev-lang/rust/Manifest b/dev-lang/rust/Manifest
index 94ea0cd2c3c9..a407b47fadbd 100644
--- a/dev-lang/rust/Manifest
+++ b/dev-lang/rust/Manifest
@@ -94,9 +94,43 @@ DIST rust-1.53.0-x86_64-unknown-linux-gnu.tar.xz 147158552 BLAKE2B 0e3037221da38
 DIST rust-1.53.0-x86_64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B b40e46258e54771b814e07433318eb05e471c8bb65bfe016ad3830b94fe0be5234a1c9821c746cc452714719a78f24c5e0012f1d4c81569b36c6161c50ae034f SHA512 ecea8c4df0b72fa70d3a9a0c4b38812424006f21832c8805c9070ae4ee5255bfe6a7153eb44d453302162c7fc8a1a2dd6bb8574bedeb4e4f7a769d51de2cbde9
 DIST rust-1.53.0-x86_64-unknown-linux-musl.tar.xz 252250024 BLAKE2B e99c7a78d6d6a8b357ac17cdaa9540cc895d138480ddea25866d2f8235b48b6a1670ba7c9256355ddecfade28bed9eeec8b53e85f1c13af5c56c0ba7a12e2371 SHA512 33ee4d82cc1feeb4c478948a05eb44f7daa90f749191bd200a216dabe810420f47a3a258255c680302ddbc83020df4729d5b3ca9569003a89aa7768697e2fb64
 DIST rust-1.53.0-x86_64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B 24283ac5457eb84de6a5588f69a22076a78c2ce9e5c3c245608bf963544a5c9f8fa8006e2ae216af65f5083cf5fe21f4d1c5286cf0b491ef4995be5ab8ac7c64 SHA512 fbd6b1477efbfc23da3f4f753c317f714a29495425a52d771d2527a42cfe7ad99b9973538da0978a6afa80f545823c9d0448d9cd29e6ef53559252e328d7deb8
+DIST rust-1.54.0-aarch64-unknown-linux-gnu.tar.xz 231424908 BLAKE2B 6c403acd4b6b27208f95eb3fbfee5c8e7a63f3314f29ea7498dc0a4ae720d77c249c9ebc02a95d50278ac7f07b8d943b1c9c5e1561858f72ad1d8cdb29b779cc SHA512 3e6f638a35ed391f5393be7c92ef2560ed6bb26af1ea6ebf784bfadd3e153d1effd88fe49128eb98f5ec2ced7a65f3f4a596db71b9c4eca90429e50a8f168d11
+DIST rust-1.54.0-aarch64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B f655d6f53a580041642871abd10993b771835770bebb6de1ff1dcc9b250ae52f862212feece533a9932c6efb0c3d02769cbbb03114d941c7e8d3117e1e23ce75 SHA512 d9508ae502e26694f83c04bbea3f95aeeee7990e703c8bb8be9ba098e0df86a39272022e1a94f8852ed23b8378ecb338dbd87ef226da444e29ccf7fb1f44e5f6
+DIST rust-1.54.0-aarch64-unknown-linux-musl.tar.xz 231629132 BLAKE2B 339e341eadd2cb0c763eb00b5a6750a1082da26bcae1b3c06459c99c64b4babf4aec5173222187eed7271e3c5847da47b49e6ab75674161b6e28297bb62ec781 SHA512 f0e20c079e4351fac5e8d635a37502e833a56fd216fd015117fb12be8b72e022bce946ec8e1612b320530dd186b1702b4384e74d64a479099db4562bcfc68453
+DIST rust-1.54.0-aarch64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B 5aa9872ad96668d392c1aecf7f54c171e7bef6e17f65efc6c3fff7eee8dd7fc3eacee03e6544cdc27c5d34ea946d1a61aca6298c91812e9f35c391211b563506 SHA512 07694566ae33492df31083887fe9b7d43fb9f7c469ccd2fe9c77d3c8d3bd6b58ddc5e185462e982f78d63db39703a60986acaad51f953ea7434bcd9432a96946
+DIST rust-1.54.0-arm-unknown-linux-gnueabi.tar.xz 209386412 BLAKE2B f33b802bdfa3cbafdd86eff2d43e0af99e54777b1a26f1106016a8bdc4c06b5cdac8810ac68785f6da4cbe6a6d7fa74c13a855a5ef9c5703b16a2100ef60f2df SHA512 5f68879abd5da5d37b555b0b6ca5850d68663878bd23b5f6a31efd0a9dd43809c4d413154f8f343688eca23a96adbd08fcb3132831b848690261964d6a24e160
+DIST rust-1.54.0-arm-unknown-linux-gnueabi.tar.xz.asc 801 BLAKE2B 7b90cdac8d068bcd565b42bed2289deff1490ae51cb65bbf2f0c308f6187e4fcfd98898e8e590ade2c2af7f10080821a417445e5c3046b4e39e0099c32e62624 SHA512 35bc49bc4140207af140e561023826e565751e47bbee6c1fd374bd7a992b6499051f4d84ca12e17101ea552bcafd6b96b111af888cd891f6dc18fceda11c83c8
+DIST rust-1.54.0-arm-unknown-linux-gnueabihf.tar.xz 209102396 BLAKE2B 1190da5c96336a121b4d4f92dba36c52c5f2bb0b26fdd92ca92ae4954256aaa375ea174c9669a285365ff02d4f3cadbf2d2ac92b847b00e10606e3832629a864 SHA512 ca38f1948b02008c1e9355c12f6d1fd3721ae9c06e686a09a7eea48670d889879ac0f81c462d21f467d600fc0972b920219e7378f7ba438e756cbc9b419a5f43
+DIST rust-1.54.0-arm-unknown-linux-gnueabihf.tar.xz.asc 801 BLAKE2B 9f01100804d72dc7afb7660277daa5a0f0cd96e478a7dc5a242360d07b25a22c5769727a67a46d63f3283e22e89ef5a6f6f6c48ac46f01075e2d908bf681be5d SHA512 316662676cf52a2e58c6cbeb46152da3919e54b0385c33a8fd1d46c25e71604f7803174278f80d4cb72cae54829ba00e3c4ba58001b43cc1148347f1788fdb02
+DIST rust-1.54.0-armv7-unknown-linux-gnueabihf.tar.xz 217891252 BLAKE2B 657f366344fe911c5d93585ee0b1063815fb158069136c742512f21d3b47c64e42555d4e52ba305e5ddebbb1fb37fa8ba8ebc36f9a9e5fe5fe7ffdb31472e012 SHA512 0f4f4e075299cd369b4b53a425e9b290cd9cedca6a88878c6a4ae0487fe976b15bea0c8b92e7e376f77dc370552d95d738e99b7fa184a8e2c0e5ab94d65e7595
+DIST rust-1.54.0-armv7-unknown-linux-gnueabihf.tar.xz.asc 801 BLAKE2B c23e12a70df5e58dfca0e9c66432844424dc166cbc7dfeef4f692ba076ba687fd871bbbb5d37ed82ed5662ada170520c56c426f89be4fa07a0c88cfb773fe91b SHA512 14a5674ed5862b6cd3ddcd3efff4ab1298285bc0d5604a869e74e055a319401b9bf48a60d44583ddeb2230dcfab2e5584e5149947fbc40d97c112a6dae51745a
+DIST rust-1.54.0-i686-unknown-linux-gnu.tar.xz 226774108 BLAKE2B c56fb6ef24cda0c89b76403a38893a32382b09be8a8d08b066fbd437ac0a73a7d00af175c59bb7af6e6f5d8a74324e10afed2ea35d830f9f96f5ceaa4ec345d6 SHA512 15bc0c31a306aa1e2b16fec7f97963ca291b2632664c49add4281d3244054b2e2f51b0ade86a9d63db87124071fa25bd7d5e662acf4c30cf3267eb56da4a1f1f
+DIST rust-1.54.0-i686-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 4d53a7760abd54973ef8ce95c10671db41136d7031a25ea0c0362feb65ce5755223d60a01c3418b69b902feebf75651bc4379ea66f98c862a573a8774a5e99c2 SHA512 e3dcef4d17bea43a1b0858da52e899d7a14db8ee7b9e3f506e9297dd0aba910d3808c25163a3f95698f32d25a3f128bb1759a808c84b8c75404300f60198fbd5
+DIST rust-1.54.0-mips-unknown-linux-gnu.tar.xz 147938432 BLAKE2B 38e7b768773cef9e3cfe707a716ba59ed67e2bbefe59db5531b06489131df219eba6a46eeb5c06bfd6d943fa4453f3d6f4b869725108fd2e069ab6ebbfa3d08b SHA512 aab52c26bd80b058772e0cd815bbd5ca0ab0fb10fa0ba43c07fc6151ec6e99d7ab48613a3e5cbdcb8f00b83108a716bd8b9f5d6f2c8518499b2482aa4d423a91
+DIST rust-1.54.0-mips-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 05f4c8ee719ff857aa0a53661f6483c450a561905150217f886c25cf5c3e8dc3a36ebe2da38c75f843e3de4274d92c0c274906af40a94a6ecb122a9d38703e7f SHA512 6ba884e92b0ead2049f639405308ab6363268a8b42f827c9ecbfc5b16a0755bd1d345d989243f28662ce8c53611fb5984104001b3edec7b2dc22cc914970a7e5
+DIST rust-1.54.0-mips64-unknown-linux-gnuabi64.tar.xz 157458264 BLAKE2B cd68d03e058922a020665a35765913f3405b0c0d5c7e252da1dc63b4b6af27d31fa5ce7eee562635241baea422c84d7e2a9539a79e6ae152794aeb9636e97a46 SHA512 74a85d869141fc941bf4f9821945ce0efd0169415fc209cc2288015d4e358716380cf91e41342a231cd34ce88321f24c4d20fffec3be702498cec3846a14298b
+DIST rust-1.54.0-mips64-unknown-linux-gnuabi64.tar.xz.asc 801 BLAKE2B aaca9b8e5007e0efc459a04ab95e6a3d76ab6cf177964acd4bb148f09ffac4f9c9bfba4ca4834e1ccc9505c259511f45ed1830285307388d79ac66b8dcddbbc5 SHA512 8d5d2a1200af550cdbc85b2dc847e524ada7f16fbc5f4c29d0e9e4e8c0067e04daaa273a99c14e6ad1a7d622e4f9d3da720b41f4ee75ff50cf2153cc190642e5
+DIST rust-1.54.0-mipsel-unknown-linux-gnu.tar.xz 154497208 BLAKE2B 40ab905d6088cb2e4364e2e6a0e4fb257365af05302abab81604d78b62bc255377ff7088884d9222f2997312befbf8efcd7f1821fd4bcf2dbae149c70cfa1224 SHA512 c61abff1df5e787d330abe4b3cbe8c3e67f02974dba3eb0fa4cbfeb0a74a956abb48199301e7f9af915b9be5a0d6ff7771198414458da52af18e9a74cab52620
+DIST rust-1.54.0-mipsel-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B f525e1849a0c753a077ffadb7dd0b1d67b5fb369c061ec895878fbbd8d377572db2b5bb1fb5e1a24bcef61eb3f80b6f6bbb3d93b611e6b00e535b2e516ae0681 SHA512 d55ac3c329b20bd4e7f095ee2c710bd5c5be825ae517561bf670b96626427db39d362be553c3b92c90710ab8d9b677d2367aa85a397a4568c1146e0dff10cda6
+DIST rust-1.54.0-powerpc-unknown-linux-gnu.tar.xz 164089736 BLAKE2B a4e3c0b6f78444a2f48e842468e828e517d32fb1b62b2ad0c0000bee97ac5730977c8dacdc614ea2182fabf25e23804efed53b493ec611dd5d4d5d8ec237feb4 SHA512 ae8ba40e5843bd3ecc25156521f7e7cc7c869457151896371fd5faa3bc565ff9a6b7d437e3587dd9f1e87e9fa19463259ec18fe03badbd89372c11ddc7b577ee
+DIST rust-1.54.0-powerpc-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B ac59496efd850b618b4013d0cbe09172f5828e60ae07afd0b233749ff3c1699e524e3a4fa93fea906f79dbc44f1d94ad52bf3952c2a4014d9d2653702d86349f SHA512 daf5da203c079cfca365990b0111d9df16defb49e1bc9c24407e423873992a9920d88fc2a097e1df8d2b03e05d1118bb3786e908d4f46fb282357c62d24df88c
+DIST rust-1.54.0-powerpc64-unknown-linux-gnu.tar.xz 178088044 BLAKE2B e059572d2044aa05683d29370c395b714f25d0c7ec820bcb133d29667e9066b82e62e11000a3183a66cbeb87625517284d12263c2ea0eec60dc537ba3c78e6b9 SHA512 543dcaf3bab3343e796b3535a3b4e12d77227006e64e91b885f599fd94ffc9c1cc8d8c5ce3b788df0399c79dc785ff7c8dc375ae20d3b4156d1b16a7dec5a371
+DIST rust-1.54.0-powerpc64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 663a3f7027c61f4a7e38bd0a72ffa55b9de2673cc0d48e94bb964e950b8a356b01011e94904efb3525c0ee2cd57e82ce8af50d2360a7e5b200b6eefeb4580927 SHA512 f0d03c2c3da60731cc05b9370df53766d6fc14ea3d49edbe0a7e809e35560a7cf06c4d8291896a604fdaddb665d117c53ec93671a0402dc093442ed3cbf4c596
+DIST rust-1.54.0-powerpc64le-unknown-linux-gnu.tar.xz 187058704 BLAKE2B bd90f56b50024cfce5bbfb5e84d28c06687b6a5524b1964064b1e53111b49805815d3dec47fd035f9e1d78c426d0b0689ac7c8baa1044cfbb9343da452d77694 SHA512 9d13d53a1ef106b190161096122da1bc9090dc495604c8ddbb9d6b02323e6b7c9b8bec82dfe33ae6cf1820e986811a701f7a4d4c3eb7c297c777fe3563b8e9ee
+DIST rust-1.54.0-powerpc64le-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 3cfdbc8958b7025b6b3b76a6aef603820418c3aa2ee63c0a257dcd36004ca90203abb1b60a921310a9aea10545e32a11291a9d9baf3caf3e2b5a27ab4724bd9f SHA512 3ece925a1e3797cc6bf6ce44a3ca4768f57bc9bc3bb1261d6a82905907c635bb20ea7f5eeed062ff02582b035a22508990bfe83640006fe77fde8e699d5d55cc
+DIST rust-1.54.0-riscv64gc-unknown-linux-gnu.tar.xz 180939260 BLAKE2B 856a431c22f286d42069dcd34101cc6e539004024619ba061a39d3bcc48834ce0002e2499466f976b81a7aa7d47f1c3249f2b21c69233df4d7d0940d80f5761c SHA512 5af3bbd68706bff03d51daf76551830810a8e225e8f0a9a394fd29a4fe9f0389bed3e0d94333483e089b4cce375c0320cc6ae360ddc4f08fca0ae80e671ba2a4
+DIST rust-1.54.0-riscv64gc-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B 366ef8f21801cc510b22217c4d974343ccb9f941faf08fba584b3f068a9d3128e3a15f5dc1400ed3749166afb622bb3aaafcf15381a0f2a5b60767db6ca9d3f2 SHA512 fdafdedb8f667124cb71eb44a6a61b1cef1df0baab385d2f5c674d900cd24139e555aa30df99f9d496b5fb30031bb86a43b118fafa083a24e2be10126e68df67
+DIST rust-1.54.0-s390x-unknown-linux-gnu.tar.xz 186478732 BLAKE2B 3d3ef6c37e0c24a4622814c51bfe1a5093f261e393a3dbb9c5eda023f8d0a63ebf0080cba5d43c8448b79503aecc62f04ccc18f040562db57dcd2ff1cb243124 SHA512 5033e3f61af7de144c3ed441f9fdf9f0c00a837d018ec3c0d4ef67f032e7f808d2dcc586e7b85b733ff9bc2196c2e05fcd104b3daa85698cc0e4e9ab69b870bd
+DIST rust-1.54.0-s390x-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B b375bf65d9bef4a54792f93ac52fa408c85407d6aa646b64ee85d9220fdd9d7dda76c1e118def5262f5ab8fd9b7637c5d681d37c50d9e917eb6ba0d5b25e42fc SHA512 3bd16cdc61033d6e38de595ac145f0e7cebf3c3455491325ba89de8067cf6096beac7f00b3e4dc942cf4bf0f5ab59f6233b5d24f0ebf97ab3562260182baae4c
+DIST rust-1.54.0-x86_64-unknown-linux-gnu.tar.xz 136593024 BLAKE2B 2f10b636982f335a200149d11c6cf212adb3e27f7d3eda9069881565a07f29aa6f2010ca786c3746190a3bbb8b8d79d531bee906e21e21f2c132f6c1e4198e17 SHA512 d2aad46556b164dac54be76a2459789fc686781b157f0c7d647464db3b03cbb902c8c4de5c6ef2e0811a94bdbba2973c93698c4f3a7c6ba294c0e652994e3fdc
+DIST rust-1.54.0-x86_64-unknown-linux-gnu.tar.xz.asc 801 BLAKE2B cdfb03b6a75cd86e565b0b502cbd72636b67a92f9039fb148ca19fbef3d0775616ff03420cebeffe36db3d1d1db75e7e77ac473841a399dc2a218df09598b2eb SHA512 144ec35e82194d16cbf4e56c34dc25aa83d8ec8021052cc471ec85f169b74bd9394ec52c21c898d3ac0b966fd7463cd567d729eec9152f5fb8307c87eb02877d
+DIST rust-1.54.0-x86_64-unknown-linux-musl.tar.xz 267840732 BLAKE2B 32e50467c4ee88cc502ea7e3e8cda9cbd89bcb6b7fac0c84b1509abf0a5c551d43f6522d148f54e4af65e0738b1dd13bfebaaba7e863909047fd53cac03bbbac SHA512 131f4743e5990c3e1ec2b7a0d1eb107a0e5264e6ce387cf4aa6db9a1693d0fe4a42de5722072708d72d580500d566f7772513974ce5589ea07997374fbdefdb9
+DIST rust-1.54.0-x86_64-unknown-linux-musl.tar.xz.asc 801 BLAKE2B 8b9194ce2b172cdd1fecbe064ddaa0047d30ddeafeaa903637e65775b139207c47da7eb17475ed17b1792b7c872ae71058c1f2cb7d59bd2d42a78cc590f9ec03 SHA512 2aaa42cab5272b6ee2ad0d3cd67b7dc648af68c5b9b5fd8f816688c0ebcc2cb0a24ac8c2a23dda5f17f7ba04f544625b3b03b22882c9122852bba680d8155afc
 DIST rustc-1.52.1-src.tar.xz 115109508 BLAKE2B c5d73f5884037d287d88ba9fdaf63a36678b692e1b510920045797ab29f1660f05cda901e19411ff83ec3084c4130034c269976b1056220f3e629cff116d07f0 SHA512 55f5053ce40d4eba4663052817aef6a6275139ca229c89cd1ec44711458b412720203301d8c7975aac5720a91fcaf21847f8184f641cbb0004f722520283c73c
 DIST rustc-1.52.1-src.tar.xz.asc 801 BLAKE2B ea2f89289b4d9cf90a0d10148bf3494805c00e7822cc98addf0b602c35e4635bb1963d79168b395a5f7c7bd024070284fccd19757982daa0d554dcac166fd4d7 SHA512 0d692a085c017b03b8a135a28f7e6f1d7e05642d2e99f0f1fbc397e766bb8fed4b4c6b4c9157b79d9bb0c4229607dbc35711cd463c62a9966a4efb6f197de7d3
 DIST rustc-1.53.0-src.tar.xz 115686332 BLAKE2B fa068f89d42f927fdc79ee31aad1386eaf2aa596a060e059c5a1a73fe48c48d008fc952cd6c7912b743e41d77a94b205639eed0f728b2539b62f18a772cabfe3 SHA512 70485cf7a0f7fc36ee31644e546374079dc387a85b44e5e793707fd0a4d7ca05d311291e78b86db955485d8f21c47ff9e1908acc4da68ba04929287213a40c24
 DIST rustc-1.53.0-src.tar.xz.asc 801 BLAKE2B 75d3aa4122968f10a119f7a04df897f496588c7a1a2ddf1ea2222099c9efb0e320f5677a26c3271f86e7f500120664485f54c6025ae3c6df30d2b0fe758f5826 SHA512 e337579b9ab4febca4594c2c5d42c279b51cfc745c383be9a430204188311a25319c04c73fde34fdb2bb98a88bfd8daaddc67765834330e6c279a6e5a5648247
 DIST rustc-1.54.0-src.tar.xz 116286856 BLAKE2B 5ac47822646a0b6205f09282168b4d4ddcace9f6bc8f242c890327ca4074626f129514f8bcae5c5556015745f718990cce490658076f5cd3526623439540416b SHA512 5162f85b43ca2c5af93fdbfb2597d75df8a838f7fcc025a5298499ce1043db50f1ea2fbba753e47ce5daad3d80d4b612acf6527ef902c34117763e687fdbbcfa
 DIST rustc-1.54.0-src.tar.xz.asc 801 BLAKE2B 5ee9166eaa00e4ffec10fb82b18946d403bc2030c6e04de6449311cbccc2ef1b017044f451a1c19be3a0a9640c4a9a9e4bd22d28e2115509f333ae38eb25e9d4 SHA512 5ad91f43515de14114964db0348cd28c08adc6dc935f110bf339053414b8eab8a40f1074ceffa44ed2df61254f8368d867479400618c44efaa0333642ab49d07
+DIST rustc-1.55.0-src.tar.xz 117197580 BLAKE2B 8d9739ce7571146aee0e07c6287de9a8c4f1a914606cd47819eb1ef118b15772ecf22d0d43d7732f03c234a013fa54a4a7f0578a3f136af518f71bf64a03305d SHA512 7522f2fa95d5af92472404ecc97d7d9e745e88c933196a83fa373ce1efff6db3c295e0e2afdbfa1ff00644554efa0c3c7f6c11f9119ecf9010cb440b3f27c2da
+DIST rustc-1.55.0-src.tar.xz.asc 801 BLAKE2B 5b4ba951ed7ed56c7bd9c71df89cc1e966485d77411016ad71a811ad8e21b88295deec08f24f65afdb163e69ee0fe19288bcc64d18fe272bea51319caddb66b2 SHA512 9bc858ce26cc069cafaefe6165cb15a07e144ad6d6312bcbe115a0a51fec6e281d3e8a7977e958d7fa10e77139548d57396b1552a2802ec74b7bc6ac641e7ae4
diff --git a/dev-lang/rust/files/1.55.0-ignore-broken-and-non-applicable-tests.patch b/dev-lang/rust/files/1.55.0-ignore-broken-and-non-applicable-tests.patch
new file mode 100644
index 000000000000..c3bee9bae263
--- /dev/null
+++ b/dev-lang/rust/files/1.55.0-ignore-broken-and-non-applicable-tests.patch
@@ -0,0 +1,76 @@
+From 1879d1d1a284bf51c752e47db284ce22701ed5d0 Mon Sep 17 00:00:00 2001
+From: Samuel Holland <samuel@sholland.org>
+Date: Sun, 16 Sep 2018 16:38:48 +0000
+Subject: [PATCH 12/15] Ignore broken and non-applicable tests
+
+c-link-to-rust-va-list-fn: unstable feature, broken on aarch64, #56475
+env-funky-keys: can't handle LD_PRELOAD (e.g. sandbox)
+long-linker-command-lines: takes >10 minutes to run (but still passes)
+simd-intrinsic-generic-bitmask.rs: broken on BE, #59356
+sparc-struct-abi: no sparc target
+sysroot-crates-are-unstable: can't run rustc without RPATH
+---
+ src/test/codegen/sparc-struct-abi.rs                            | 1 +
+ src/test/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile   | 2 ++
+ src/test/run-make-fulldeps/long-linker-command-lines/Makefile   | 2 ++
+ src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile | 2 ++
+ src/test/ui/env-funky-keys.rs                                   | 1 +
+ 6 files changed, 10 insertions(+)
+
+diff --git a/src/test/codegen/sparc-struct-abi.rs b/src/test/codegen/sparc-struct-abi.rs
+index 78e5b14a212..6f93e93286b 100644
+--- a/src/test/codegen/sparc-struct-abi.rs
++++ b/src/test/codegen/sparc-struct-abi.rs
+@@ -2,6 +2,7 @@
+ 
+ // only-sparc64
+ // compile-flags: -O --target=sparc64-unknown-linux-gnu --crate-type=rlib
+ // needs-llvm-components: sparc
++// ignore-test
+ #![feature(no_core, lang_items)]
+ #![no_core]
+ 
+diff --git a/src/test/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile b/src/test/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile
+index f124ca2ab61..363b18f0985 100644
+--- a/src/test/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile
++++ b/src/test/run-make-fulldeps/c-link-to-rust-va-list-fn/Makefile
+@@ -1,3 +1,5 @@
++# ignore-aarch64
++
+ -include ../tools.mk
+ 
+ all:
+diff --git a/src/test/run-make-fulldeps/long-linker-command-lines/Makefile b/src/test/run-make-fulldeps/long-linker-command-lines/Makefile
+index 5876fbc94bc..5f167ece1a2 100644
+--- a/src/test/run-make-fulldeps/long-linker-command-lines/Makefile
++++ b/src/test/run-make-fulldeps/long-linker-command-lines/Makefile
+@@ -1,3 +1,5 @@
++# ignore-test
++
+ -include ../tools.mk
+ 
+ all:
+diff --git a/src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile b/src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile
+index 9e770706857..6d92ec5cec8 100644
+--- a/src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile
++++ b/src/test/run-make-fulldeps/sysroot-crates-are-unstable/Makefile
+@@ -1,1 +1,3 @@
++# ignore-test
++
+ all:
+         python2.7 test.py
+diff --git a/src/test/ui/env-funky-keys.rs b/src/test/ui/env-funky-keys.rs
+index c5c824ac58d..f3fe047a79c 100644
+--- a/src/test/ui/env-funky-keys.rs
++++ b/src/test/ui/env-funky-keys.rs
+@@ -1,6 +1,7 @@
+ // run-pass
+ // Ignore this test on Android, because it segfaults there.
+ 
++// ignore-test
+ // ignore-android
+ // ignore-windows
+ // ignore-cloudabi no execve
+-- 
+2.24.1
+
diff --git a/dev-lang/rust/rust-1.55.0.ebuild b/dev-lang/rust/rust-1.55.0.ebuild
new file mode 100644
index 000000000000..0805c94c1d0f
--- /dev/null
+++ b/dev-lang/rust/rust-1.55.0.ebuild
@@ -0,0 +1,678 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+PYTHON_COMPAT=( python3_{7..9} )
+
+inherit bash-completion-r1 check-reqs estack flag-o-matic llvm multiprocessing \
+	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 ~ppc64 ~riscv ~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 ARM AVR BPF Hexagon Lanai Mips MSP430
+	NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD-1 BSD-2 BSD-4 UoI-NCSA"
+
+IUSE="clippy cpu_flags_x86_sse2 debug doc miri nightly parallel-compiler rls rustfmt system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+# Please keep the LLVM dependency block separate. Since LLVM is slotted,
+# we need to *really* make sure we're not pulling more than one slot
+# simultaneously.
+
+# How to use it:
+# List all the working slots in LLVM_VALID_SLOTS, newest first.
+LLVM_VALID_SLOTS=( 12 )
+LLVM_MAX_SLOT="${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}[${_x}(-)] )"
+	done
+	LLVM_DEPEND+=" )"
+done
+unset _s _x
+LLVM_DEPEND+=" )
+	<sys-devel/llvm-$(( LLVM_MAX_SLOT + 1 )):=
+	wasm? ( sys-devel/lld )
+"
+
+# 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/${PV}/src/stage0.txt
+RUST_DEP_PREV="$(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-util/cmake-3.13.4
+		dev-util/ninja
+	)
+	test? ( sys-devel/gdb )
+	verify-sig? ( app-crypt/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	elibc_musl? ( sys-libs/libunwind:= )
+	system-llvm? ( ${LLVM_DEPEND} )
+"
+
+# we need to block older versions due to layout changes.
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	!<dev-lang/rust-1.47.0-r1
+	!<dev-lang/rust-bin-1.47.0-r1
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warnings
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${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}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=${BROOT}/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.55.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.49.0-gentoo-musl-target-specs.patch
+	"${FILESDIR}"/1.54.0-parallel-miri.patch # https://github.com/rust-lang/miri/pull/1863
+)
+
+S="${WORKDIR}/${MY_P}-src"
+
+toml_usex() {
+	usex "${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 ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=4096
+	# multiply requirements by 1.5 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 15 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rls 512 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}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+src_prepare() {
+	if ! use system-bootstrap; then
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi)"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	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_targets},\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets="${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/wasm_base.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	local tools="\"cargo\","
+	if use clippy; then
+		tools="\"clippy\",$tools"
+	fi
+	if use miri; then
+		tools="\"miri\",$tools"
+	fi
+	if use rls; then
+		tools="\"rls\",\"analysis\",\"src\",$tools"
+	fi
+	if use rustfmt; then
+		tools="\"rustfmt\",$tools"
+	fi
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(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="$(rust_abi)"
+
+	cat <<- _EOF_ > "${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 = $(toml_usex system-llvm)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		doc-stage = 2
+		build = "${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 = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = false
+		cargo-native-static = false
+		[install]
+		prefix = "${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
+		[dist]
+		src-tarball = false
+		compression-formats = ["gz"]
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		cat <<- _EOF_ >> "${S}"/config.env
+			CFLAGS_${rust_target}=${arch_cflags}
+		_EOF_
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			cc = "$(tc-getBUILD_CC)"
+			cxx = "$(tc-getBUILD_CXX)"
+			linker = "$(tc-getCC)"
+			ar = "$(tc-getAR)"
+		_EOF_
+		# librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+			_EOF_
+		fi
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix "${LLVM_MAX_SLOT}")/bin/llvm-config"
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+		_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.${cross_rust_target}]
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ar = "${cross_toolchain}-ar"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${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:-}"
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	cat "${S}"/config.env || die
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	# we need \n IFS to have config.env with spaces loaded properly. #734018
+	(
+	IFS=$'\n'
+	env $(cat "${S}"/config.env) RUST_BACKTRACE=1\
+		"${EPYTHON}" ./x.py build -vv --config="${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 ${t}"
+		if ! (
+				IFS=$'\n'
+				env $(cat "${S}"/config.env) 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: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	(
+	IFS=$'\n'
+	env $(cat "${S}"/config.env) 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 rls && symlinks+=( rls )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+
+	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"
+		$(use amd64 && usex elibc_musl 'CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-C target-feature=-crt-static"' '')
+		$(use arm64 && usex elibc_musl 'CARGO_TARGET_AARCH64_UNKNOWN_LINUX_MUSL_RUSTFLAGS="-C target-feature=-crt-static"' '')
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.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-${P}"
+	fi
+	if use rls; then
+		echo /usr/bin/rls >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version sys-devel/gdb || has_version dev-util/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${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
+}