[gentoo-commits] proj/musl:master commit in: dev-lang/rust/files/1.27.0/, dev-lang/rust/, dev-lang/rust/files/

[Aric Belsito]

commit:     6f11b191798b06fdb8f13c7f2f3d38416db15a96
Author:     Aric Belsito <lluixhi <AT> gmail <DOT> com>
AuthorDate: Wed Jun 27 17:22:21 2018 +0000
Commit:     Aric Belsito <lluixhi <AT> gmail <DOT> com>
CommitDate: Wed Jun 27 17:22:21 2018 +0000
URL:        https://gitweb.gentoo.org/proj/musl.git/commit/?id=6f11b191

dev-lang/rust: version bump to 1.27.0

 dev-lang/rust/Manifest                             |  13 +-
 ...-nostdlib-and-musl_root-from-musl-targets.patch | 384 +++++++++++++++++++++
 ...sl-targets-to-link-dynamically-by-default.patch |  12 +
 .../rust/files/rust-1.27.0-libressl-2.7.0.patch    |  24 ++
 dev-lang/rust/rust-1.27.0.ebuild                   | 355 +++++++++++++++++++
 5 files changed, 787 insertions(+), 1 deletion(-)

diff --git a/dev-lang/rust/Manifest b/dev-lang/rust/Manifest
index 7815bff..1d79155 100644
--- a/dev-lang/rust/Manifest
+++ b/dev-lang/rust/Manifest
@@ -8,5 +8,16 @@ DIST rust-1.25.0-i686-unknown-linux-gnu.tar.xz 102453124 BLAKE2B 8986ebab6a7a9d0
 DIST rust-1.25.0-i686-unknown-linux-musl.tar.xz 100253196 BLAKE2B 2bc6d9d2a1dfabd8d88733921c3f1a5558174e8e915bc6f2a38f71097603796480d88bfb40c4ebcc2a877290906079099a1f7c965931a5378fffde556193905f SHA512 93eb29d86e209e0bc2aa92f3e534393ad37658a6b4f91ae3da7f3aaf05e82a5c04376f2e6d24410f0a1647ba3d7c6945254c74704084d53bf6be806a064754c1
 DIST rust-1.25.0-x86_64-unknown-linux-gnu.tar.xz 111059260 BLAKE2B ae982976a735c2b5226722207a983bb638cb7c0cb0ceb6b438456d54fac86a5d1892b535f01ac463157205c0ae27ae876482f6ac1fa269a9ec3e1177be0cef2e SHA512 aea93ff64f620a1dd6b48d07ec3dcbc126b2f5c17b4697c096ec8cd02a3c7dfec7ae7d5df70a55eceb372897ad12f3d01c67d5aaea0167a80270931c61323f78
 DIST rust-1.25.0-x86_64-unknown-linux-musl.tar.xz 97724224 BLAKE2B ad0accfb670acf2a02f9bb1c8e6a80ab7be2d1e0f01bc2da13744ab164774cc318255d78a657b84ad0f97ab1ee3fc4a53b4cf1ee71ba52984cbcd52bd64f2387 SHA512 ee250193db5e20edb80fe864609b1c16ca5da5f2ca16700f5f938195d43dd5d3de8cd138f64feebd73f77fbf4f61196459c13420ba6c4f451b9db266db92219a
+DIST rust-1.26.2-aarch64-unknown-linux-gnu.tar.xz 90964988 BLAKE2B 7e5de737ff2b4711e0a5b3085f10c3f2918fc5823dcb52bc5f897a5617b65d648d5e59664dbfaa904ff08923d1bbd11aae21349760fefef6ff18ea0e45391e07 SHA512 b565ec988d3b946dabc8902eba60b446070e77b7c27aa98d981b7ba5e9285bda95565627600e6be057970de5006d9640ef77fa920849160f5cf98508b48d1673
+DIST rust-1.26.2-aarch64-unknown-linux-musl.tar.xz 96634640 BLAKE2B fe74fec5c20d7d74e261b30cc3e3eb375da35332ab54e528eca78270608c6830fc4ed15bfa0f8126fc4e77f8476ab9c008565191667ba278713194e38c2d7b59 SHA512 2643021d99bafc3da58bab7a40aeb9c0127b099b26b59c4ebb073d7f807262e65ec8b12618fb8fe5d75fa8809319c3b08518371c04f406cb7fcdbf795b3bdb35
+DIST rust-1.26.2-arm-unknown-linux-gnueabi.tar.xz 98267104 BLAKE2B ae44fcead124e5e3993240be0c8a46e545df5d045d39184cfada86d9a820fa30a771396a2ced86c2454aef224951e85cf0b6965c13ed98a3024e07d4ca1ec6a9 SHA512 a96295ef2d0eca5a682e3b3bcfe3b3ffeb5bbe45bc949f467cfd1e7ac7252d74e86d2d8f25e5722e75e7f537afeb3b0ae9054bd3908916ea461623f8c13ba5bf
+DIST rust-1.26.2-arm-unknown-linux-musleabi.tar.xz 97679732 BLAKE2B e5bdd376c1a5a1d8ebf3e8cacd80f0a8165e24ed8c7ed3755cf2ca7f3688f3f278534021e8d1487875cab657ad9391023577692afaff45f001e52d76d9417058 SHA512 a1e20e2a93b40ec8bc8a90d9e5b57801e7fa79649b45ae6ca1133ec24779edc00ff73b5f8a1836856b2cdd78b643390518d58694e5661834b6091a5d6e924660
+DIST rust-1.26.2-armv7-unknown-linux-gnueabihf.tar.xz 98828932 BLAKE2B 2f60e65128bd32d97422d82d99f5c5447d1c1e77582028089d52208e3ede4af5e72c278a3fb5001348c864087f3e85af05604a0b6078891c5ed812d745840d93 SHA512 7b8e3f39a62b7b5fdaa6d53e5638de26968799d97b5d53e09bf49456b02f968495cff4757f25d38bc3393ca33dc1b9da353ec290ba9416770e082548aa5079ac
+DIST rust-1.26.2-armv7-unknown-linux-musleabihf.tar.xz 97326548 BLAKE2B c955fe3fd4dbdc12c6c8101538a930169dc62e7461964b8f900e8afd3973fea783116ed25aff5db15eded8173377db412c67232b12e0cba6a3278793f08de2ae SHA512 ed1d9828d2f12e782fd73865a0403c7b26c11cab665c635308e8e1cd23e6101402b448f0334f33b33193162bb9e6b30eba8a541b3d128925407f17b9d8f4f9f3
+DIST rust-1.26.2-i686-unknown-linux-gnu.tar.xz 143090096 BLAKE2B 7871fa4e4d0f320ff949cd31cefa116bc7b741927626958e1d10197f05fc9a662b8d6c21ddd4d2910700e6f7273e4fc18738e6ff58cd85b9af4ed25eceea31d9 SHA512 859b5b72c78cca8cd473012599ca12539ef9a5ee38d1aaaad024019fd84220e344e1cd0efd2b027ef333555b158b23529f35ceb5d59d76c35e7946b5fe4a8a52
+DIST rust-1.26.2-i686-unknown-linux-musl.tar.xz 103964468 BLAKE2B f1bcc5be07239917517302389c91ca68427f4f50f98ca38832606377b011f4c7d50159b0481fe9075b497d1493b4d40445d8026e115fbae1c970f459d6e8a63a SHA512 528a761a22ee22007de4511a46d97db3cab625622d4f94de5305fbbefb6a5f7582826aae3bcb459f91a3f57d535153b8cb35b692806060ced92655cdf9c81e2a
+DIST rust-1.26.2-x86_64-unknown-linux-gnu.tar.xz 138609432 BLAKE2B 54507a8ce3ab2676e6e66852b6d3f1a47ca07ad4b56383f6247149309a0f60f67fbf0a6ba27d968c24340c07d7d5074942c6eaccbc1207c5e75fd9a6f47b2481 SHA512 29e474b0eab4dd2ffa0b964d83f52ffce530e75c4193e307410ef6d20ef9ad2b300a4f467bdf06b3311157340e9295cb9b1efdcf08dafee66979b076c2afba7e
+DIST rust-1.26.2-x86_64-unknown-linux-musl.tar.xz 101703244 BLAKE2B d69fafba82b9e98f5c9d45c606a732c1a698141f543f7d8671a715cd95dbb4948def4e8593f7355ec88b0c7aa7199dec65d7af0acec0857095641dab6df19f0c SHA512 563ed60897c5df26a407b288a44bd1d09c53ab08901fe3660426d0744f81ab32c144494af134edeea0f4c915d5844819f5987d9291622cccc7de0691e8eb4a8c
 DIST rustc-1.25.0-src.tar.xz 56108536 BLAKE2B c4a5e56b0e345b5ccde699f68659ac10793670047d2806bdab856d56aa5b960a0df5b947f7c0a7dadfcb7edbe4f9c1a71a94c5f240e91c93296a90d232030645 SHA512 45baaaa47d8b6433f61b1a6f2637d8f4fe013b534a8a94365025dfcf786815c95111b9bd3beb2544ba8587fb4c8b38431765c4d68bc9c19285da4ccf7c7eeda2
-DIST rustc-1.26.2-src.tar.xz 54613640 BLAKE2B f361b7a0ed40ccb026750b4a70b99931f1abf52024e907b588e339902de2fbbd15501d237ac048d0537005834b0a2f49935f654a8c75d40ed95c65894f611481 SHA512 a598858ddce0e05d1d431be383400f44fc551eb2e368f37b01670c0b65ea5da6a7d5b2b68bb6ef806d2107cfa0d5007008442ad4d5ddb17d18d04e0ab31600b0
+DIST rustc-1.26.2-src.tar.xz 8975336 BLAKE2B 8003e48f406262b7579593219ddec2d34372af6db1a3d4751a3e058ab63a8c7d4a1db5421973c14ef391c244081aec278274e5163cb0cc0acce49d96d83289fa SHA512 9fa421fb682e8fe4b0f01d5dfb1491adb2249ed98060b805c74af222f12b551260f473dca8bd186e1c1d095567b66dc33b812daba80329f607d1a2aa5e3145d5
+DIST rustc-1.27.0-src.tar.xz 55455772 BLAKE2B 5c1b26a3e8c6e45aaa43b3ccb5819089cf03c32807ac1adc46ec4f9ff8cf803ec444587ccb737b5d701c4ef5fa634fc4c89de3d71e6202b64ec125f986e54ffd SHA512 b80af48c637741add1d2846e6e3153b0125fb22ed587036fb9d27ad3961419af64802aa91a79258277b1be20718281558989ea0283db0c482fe1512354ba79d8

diff --git a/dev-lang/rust/files/1.27.0/0002-Remove-nostdlib-and-musl_root-from-musl-targets.patch b/dev-lang/rust/files/1.27.0/0002-Remove-nostdlib-and-musl_root-from-musl-targets.patch
new file mode 100644
index 0000000..bd63773
--- /dev/null
+++ b/dev-lang/rust/files/1.27.0/0002-Remove-nostdlib-and-musl_root-from-musl-targets.patch
@@ -0,0 +1,384 @@
+diff -Naur rustc-1.27.0-src.orig/config.toml.example rustc-1.27.0-src/config.toml.example
+--- rustc-1.27.0-src.orig/config.toml.example	2018-06-27 09:52:27.113947671 -0700
++++ rustc-1.27.0-src/config.toml.example	2018-06-27 09:53:12.820946852 -0700
+@@ -395,12 +395,6 @@
+ # only use static libraries. If unset, the target's default linkage is used.
+ #crt-static = false
+ 
+-# The root location of the MUSL installation directory. The library directory
+-# will also need to contain libunwind.a for an unwinding implementation. Note
+-# that this option only makes sense for MUSL targets that produce statically
+-# linked binaries
+-#musl-root = "..."
+-
+ # Used in testing for configuring where the QEMU images are located, you
+ # probably don't want to use this.
+ #qemu-rootfs = "..."
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/bin/rustc.rs rustc-1.27.0-src/src/bootstrap/bin/rustc.rs
+--- rustc-1.27.0-src.orig/src/bootstrap/bin/rustc.rs	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/bin/rustc.rs	2018-06-27 09:53:37.396946412 -0700
+@@ -30,7 +30,6 @@
+ extern crate bootstrap;
+ 
+ use std::env;
+-use std::ffi::OsString;
+ use std::io;
+ use std::path::PathBuf;
+ use std::process::Command;
+@@ -126,15 +125,6 @@
+             cmd.arg("-Cprefer-dynamic");
+         }
+ 
+-        // Help the libc crate compile by assisting it in finding the MUSL
+-        // native libraries.
+-        if let Some(s) = env::var_os("MUSL_ROOT") {
+-            let mut root = OsString::from("native=");
+-            root.push(&s);
+-            root.push("/lib");
+-            cmd.arg("-L").arg(&root);
+-        }
+-
+         // Override linker if necessary.
+         if let Ok(target_linker) = env::var("RUSTC_TARGET_LINKER") {
+             cmd.arg(format!("-Clinker={}", target_linker));
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/cc_detect.rs rustc-1.27.0-src/src/bootstrap/cc_detect.rs
+--- rustc-1.27.0-src.orig/src/bootstrap/cc_detect.rs	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/cc_detect.rs	2018-06-27 09:55:01.019944915 -0700
+@@ -95,7 +95,7 @@
+         if let Some(cc) = config.and_then(|c| c.cc.as_ref()) {
+             cfg.compiler(cc);
+         } else {
+-            set_compiler(&mut cfg, Language::C, target, config, build);
++            set_compiler(&mut cfg, Language::C, target, config);
+         }
+ 
+         let compiler = cfg.get_compiler();
+@@ -124,7 +124,7 @@
+         if let Some(cxx) = config.and_then(|c| c.cxx.as_ref()) {
+             cfg.compiler(cxx);
+         } else {
+-            set_compiler(&mut cfg, Language::CPlusPlus, host, config, build);
++            set_compiler(&mut cfg, Language::CPlusPlus, host, config);
+         }
+         let compiler = cfg.get_compiler();
+         build.verbose(&format!("CXX_{} = {:?}", host, compiler.path()));
+@@ -135,8 +135,7 @@
+ fn set_compiler(cfg: &mut cc::Build,
+                 compiler: Language,
+                 target: Interned<String>,
+-                config: Option<&Target>,
+-                build: &Build) {
++                config: Option<&Target>) {
+     match &*target {
+         // When compiling for android we may have the NDK configured in the
+         // config.toml in which case we look there. Otherwise the default
+@@ -173,26 +172,6 @@
+             }
+         }
+ 
+-        "mips-unknown-linux-musl" => {
+-            if cfg.get_compiler().path().to_str() == Some("gcc") {
+-                cfg.compiler("mips-linux-musl-gcc");
+-            }
+-        }
+-        "mipsel-unknown-linux-musl" => {
+-            if cfg.get_compiler().path().to_str() == Some("gcc") {
+-                cfg.compiler("mipsel-linux-musl-gcc");
+-            }
+-        }
+-
+-        t if t.contains("musl") => {
+-            if let Some(root) = build.musl_root(target) {
+-                let guess = root.join("bin/musl-gcc");
+-                if guess.exists() {
+-                    cfg.compiler(guess);
+-                }
+-            }
+-        }
+-
+         _ => {}
+     }
+ }
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/compile.rs rustc-1.27.0-src/src/bootstrap/compile.rs
+--- rustc-1.27.0-src.orig/src/bootstrap/compile.rs	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/compile.rs	2018-06-27 09:55:41.457944191 -0700
+@@ -78,13 +78,6 @@
+             });
+             builder.info(&format!("Uplifting stage1 std ({} -> {})", from.host, target));
+ 
+-            // Even if we're not building std this stage, the new sysroot must
+-            // still contain the musl startup objects.
+-            if target.contains("musl") {
+-                let libdir = builder.sysroot_libdir(compiler, target);
+-                copy_musl_third_party_objects(builder, target, &libdir);
+-            }
+-
+             builder.ensure(StdLink {
+                 compiler: from,
+                 target_compiler: compiler,
+@@ -93,11 +86,6 @@
+             return;
+         }
+ 
+-        if target.contains("musl") {
+-            let libdir = builder.sysroot_libdir(compiler, target);
+-            copy_musl_third_party_objects(builder, target, &libdir);
+-        }
+-
+         let out_dir = builder.cargo_out(compiler, Mode::Libstd, target);
+         builder.clear_if_dirty(&out_dir, &builder.rustc(compiler));
+         let mut cargo = builder.cargo(compiler, Mode::Libstd, target, "build");
+@@ -119,20 +107,6 @@
+     }
+ }
+ 
+-/// Copies the crt(1,i,n).o startup objects
+-///
+-/// Since musl supports fully static linking, we can cross link for it even
+-/// with a glibc-targeting toolchain, given we have the appropriate startup
+-/// files. As those shipped with glibc won't work, copy the ones provided by
+-/// musl so we have them on linux-gnu hosts.
+-fn copy_musl_third_party_objects(builder: &Builder,
+-                                 target: Interned<String>,
+-                                 into: &Path) {
+-    for &obj in &["crt1.o", "crti.o", "crtn.o"] {
+-        builder.copy(&builder.musl_root(target).unwrap().join("lib").join(obj), &into.join(obj));
+-    }
+-}
+-
+ /// Configure cargo to compile the standard library, adding appropriate env vars
+ /// and such.
+ pub fn std_cargo(builder: &Builder,
+@@ -187,11 +161,6 @@
+                 cargo.env("JEMALLOC_OVERRIDE", jemalloc);
+             }
+         }
+-        if target.contains("musl") {
+-            if let Some(p) = builder.musl_root(target) {
+-                cargo.env("MUSL_ROOT", p);
+-            }
+-        }
+     }
+ }
+ 
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/config.rs rustc-1.27.0-src/src/bootstrap/config.rs
+--- rustc-1.27.0-src.orig/src/bootstrap/config.rs	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/config.rs	2018-06-27 09:56:06.336943745 -0700
+@@ -129,8 +129,6 @@
+     pub save_toolstates: Option<PathBuf>,
+     pub print_step_timings: bool,
+ 
+-    // Fallback musl-root for all targets
+-    pub musl_root: Option<PathBuf>,
+     pub prefix: Option<PathBuf>,
+     pub sysconfdir: Option<PathBuf>,
+     pub datadir: Option<PathBuf>,
+@@ -163,7 +161,6 @@
+     pub linker: Option<PathBuf>,
+     pub ndk: Option<PathBuf>,
+     pub crt_static: Option<bool>,
+-    pub musl_root: Option<PathBuf>,
+     pub qemu_rootfs: Option<PathBuf>,
+     pub no_std: bool,
+ }
+@@ -291,7 +288,6 @@
+     backtrace: Option<bool>,
+     default_linker: Option<String>,
+     channel: Option<String>,
+-    musl_root: Option<String>,
+     rpath: Option<bool>,
+     optimize_tests: Option<bool>,
+     debuginfo_tests: Option<bool>,
+@@ -322,7 +318,6 @@
+     linker: Option<String>,
+     android_ndk: Option<String>,
+     crt_static: Option<bool>,
+-    musl_root: Option<String>,
+     qemu_rootfs: Option<String>,
+ }
+ 
+@@ -530,7 +525,6 @@
+             set(&mut config.lld_enabled, rust.lld);
+             config.rustc_parallel_queries = rust.experimental_parallel_queries.unwrap_or(false);
+             config.rustc_default_linker = rust.default_linker.clone();
+-            config.musl_root = rust.musl_root.clone().map(PathBuf::from);
+             config.save_toolstates = rust.save_toolstates.clone().map(PathBuf::from);
+             set(&mut config.deny_warnings, rust.deny_warnings.or(flags.warnings));
+             set(&mut config.backtrace_on_ice, rust.backtrace_on_ice);
+@@ -568,7 +562,6 @@
+                 target.ar = cfg.ar.clone().map(PathBuf::from);
+                 target.linker = cfg.linker.clone().map(PathBuf::from);
+                 target.crt_static = cfg.crt_static.clone();
+-                target.musl_root = cfg.musl_root.clone().map(PathBuf::from);
+                 target.qemu_rootfs = cfg.qemu_rootfs.clone().map(PathBuf::from);
+ 
+                 config.target_config.insert(INTERNER.intern_string(triple.clone()), target);
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/configure.py rustc-1.27.0-src/src/bootstrap/configure.py
+--- rustc-1.27.0-src.orig/src/bootstrap/configure.py	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/configure.py	2018-06-27 09:56:30.159943318 -0700
+@@ -108,28 +108,6 @@
+   "aarch64-linux-android NDK standalone path")
+ v("x86_64-linux-android-ndk", "target.x86_64-linux-android.android-ndk",
+   "x86_64-linux-android NDK standalone path")
+-v("musl-root", "target.x86_64-unknown-linux-musl.musl-root",
+-  "MUSL root installation directory (deprecated)")
+-v("musl-root-x86_64", "target.x86_64-unknown-linux-musl.musl-root",
+-  "x86_64-unknown-linux-musl install directory")
+-v("musl-root-i586", "target.i586-unknown-linux-musl.musl-root",
+-  "i586-unknown-linux-musl install directory")
+-v("musl-root-i686", "target.i686-unknown-linux-musl.musl-root",
+-  "i686-unknown-linux-musl install directory")
+-v("musl-root-arm", "target.arm-unknown-linux-musleabi.musl-root",
+-  "arm-unknown-linux-musleabi install directory")
+-v("musl-root-armhf", "target.arm-unknown-linux-musleabihf.musl-root",
+-  "arm-unknown-linux-musleabihf install directory")
+-v("musl-root-armv5te", "target.armv5te-unknown-linux-musleabi.musl-root",
+-  "armv5te-unknown-linux-musleabi install directory")
+-v("musl-root-armv7", "target.armv7-unknown-linux-musleabihf.musl-root",
+-  "armv7-unknown-linux-musleabihf install directory")
+-v("musl-root-aarch64", "target.aarch64-unknown-linux-musl.musl-root",
+-  "aarch64-unknown-linux-musl install directory")
+-v("musl-root-mips", "target.mips-unknown-linux-musl.musl-root",
+-  "mips-unknown-linux-musl install directory")
+-v("musl-root-mipsel", "target.mipsel-unknown-linux-musl.musl-root",
+-  "mipsel-unknown-linux-musl install directory")
+ v("qemu-armhf-rootfs", "target.arm-unknown-linux-gnueabihf.qemu-rootfs",
+   "rootfs in qemu testing, you probably don't want to use this")
+ v("qemu-aarch64-rootfs", "target.aarch64-unknown-linux-gnu.qemu-rootfs",
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/lib.rs rustc-1.27.0-src/src/bootstrap/lib.rs
+--- rustc-1.27.0-src.orig/src/bootstrap/lib.rs	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/lib.rs	2018-06-27 09:56:40.317943136 -0700
+@@ -751,14 +751,6 @@
+         }
+     }
+ 
+-    /// Returns the "musl root" for this `target`, if defined
+-    fn musl_root(&self, target: Interned<String>) -> Option<&Path> {
+-        self.config.target_config.get(&target)
+-            .and_then(|t| t.musl_root.as_ref())
+-            .or(self.config.musl_root.as_ref())
+-            .map(|p| &**p)
+-    }
+-
+     /// Returns true if this is a no-std `target`, if defined
+     fn no_std(&self, target: Interned<String>) -> Option<bool> {
+         self.config.target_config.get(&target)
+diff -Naur rustc-1.27.0-src.orig/src/bootstrap/sanity.rs rustc-1.27.0-src/src/bootstrap/sanity.rs
+--- rustc-1.27.0-src.orig/src/bootstrap/sanity.rs	2018-06-27 09:52:24.438947719 -0700
++++ rustc-1.27.0-src/src/bootstrap/sanity.rs	2018-06-27 09:57:09.096942621 -0700
+@@ -21,7 +21,7 @@
+ use std::collections::HashMap;
+ use std::env;
+ use std::ffi::{OsString, OsStr};
+-use std::fs::{self, File};
++use std::fs::File;
+ use std::io::Read;
+ use std::path::PathBuf;
+ use std::process::Command;
+@@ -186,34 +186,6 @@
+             }
+         }
+ 
+-        // Make sure musl-root is valid
+-        if target.contains("musl") {
+-            // If this is a native target (host is also musl) and no musl-root is given,
+-            // fall back to the system toolchain in /usr before giving up
+-            if build.musl_root(*target).is_none() && build.config.build == *target {
+-                let target = build.config.target_config.entry(target.clone())
+-                                 .or_insert(Default::default());
+-                target.musl_root = Some("/usr".into());
+-            }
+-            match build.musl_root(*target) {
+-                Some(root) => {
+-                    if fs::metadata(root.join("lib/libc.a")).is_err() {
+-                        panic!("couldn't find libc.a in musl dir: {}",
+-                               root.join("lib").display());
+-                    }
+-                    if fs::metadata(root.join("lib/libunwind.a")).is_err() {
+-                        panic!("couldn't find libunwind.a in musl dir: {}",
+-                               root.join("lib").display());
+-                    }
+-                }
+-                None => {
+-                    panic!("when targeting MUSL either the rust.musl-root \
+-                            option or the target.$TARGET.musl-root option must \
+-                            be specified in config.toml")
+-                }
+-            }
+-        }
+-
+         if target.contains("msvc") {
+             // There are three builds of cmake on windows: MSVC, MinGW, and
+             // Cygwin. The Cygwin build does not have generators for Visual
+diff -Naur rustc-1.27.0-src.orig/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile rustc-1.27.0-src/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile
+--- rustc-1.27.0-src.orig/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile	2018-06-27 09:52:23.560947734 -0700
++++ rustc-1.27.0-src/src/ci/docker/dist-i586-gnu-i586-i686-musl/Dockerfile	2018-06-27 09:57:22.478942381 -0700
+@@ -30,8 +30,6 @@
+ RUN sh /scripts/sccache.sh
+ 
+ ENV RUST_CONFIGURE_ARGS \
+-      --musl-root-i586=/musl-i586 \
+-      --musl-root-i686=/musl-i686 \
+       --enable-extended \
+       --disable-docs
+ 
+diff -Naur rustc-1.27.0-src.orig/src/ci/docker/dist-various-1/Dockerfile rustc-1.27.0-src/src/ci/docker/dist-various-1/Dockerfile
+--- rustc-1.27.0-src.orig/src/ci/docker/dist-various-1/Dockerfile	2018-06-27 09:52:23.561947734 -0700
++++ rustc-1.27.0-src/src/ci/docker/dist-various-1/Dockerfile	2018-06-27 09:57:47.163941939 -0700
+@@ -110,13 +110,6 @@
+     CFLAGS_armv5te_unknown_linux_musleabi="-march=armv5te -marm -mfloat-abi=soft"
+ 
+ ENV RUST_CONFIGURE_ARGS \
+-      --musl-root-armv5te=/musl-armv5te \
+-      --musl-root-arm=/musl-arm \
+-      --musl-root-armhf=/musl-armhf \
+-      --musl-root-armv7=/musl-armv7 \
+-      --musl-root-aarch64=/musl-aarch64 \
+-      --musl-root-mips=/musl-mips \
+-      --musl-root-mipsel=/musl-mipsel \
+       --enable-emscripten \
+       --disable-docs
+ 
+diff -Naur rustc-1.27.0-src.orig/src/ci/docker/dist-x86_64-musl/Dockerfile rustc-1.27.0-src/src/ci/docker/dist-x86_64-musl/Dockerfile
+--- rustc-1.27.0-src.orig/src/ci/docker/dist-x86_64-musl/Dockerfile	2018-06-27 09:52:23.559947734 -0700
++++ rustc-1.27.0-src/src/ci/docker/dist-x86_64-musl/Dockerfile	2018-06-27 09:58:00.620941698 -0700
+@@ -30,7 +30,6 @@
+ RUN sh /scripts/sccache.sh
+ 
+ ENV RUST_CONFIGURE_ARGS \
+-      --musl-root-x86_64=/musl-x86_64 \
+       --enable-extended \
+       --disable-docs
+ 
+diff -Naur rustc-1.27.0-src.orig/src/librustc_target/spec/linux_musl_base.rs rustc-1.27.0-src/src/librustc_target/spec/linux_musl_base.rs
+--- rustc-1.27.0-src.orig/src/librustc_target/spec/linux_musl_base.rs	2018-06-27 09:52:22.322947757 -0700
++++ rustc-1.27.0-src/src/librustc_target/spec/linux_musl_base.rs	2018-06-27 09:59:09.776940460 -0700
+@@ -13,10 +13,6 @@
+ pub fn opts() -> TargetOptions {
+     let mut base = super::linux_base::opts();
+ 
+-    // Make sure that the linker/gcc really don't pull in anything, including
+-    // default objects, libs, etc.
+-    base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-nostdlib".to_string());
+-
+     // At least when this was tested, the linker would not add the
+     // `GNU_EH_FRAME` program header to executables generated, which is required
+     // when unwinding to locate the unwinding information. I'm not sure why this
+@@ -48,17 +44,6 @@
+     base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-Wl,-(".to_string());
+     base.post_link_args.insert(LinkerFlavor::Gcc, vec!["-Wl,-)".to_string()]);
+ 
+-    // When generating a statically linked executable there's generally some
+-    // small setup needed which is listed in these files. These are provided by
+-    // a musl toolchain and are linked by default by the `musl-gcc` script. Note
+-    // that `gcc` also does this by default, it just uses some different files.
+-    //
+-    // Each target directory for musl has these object files included in it so
+-    // they'll be included from there.
+-    base.pre_link_objects_exe.push("crt1.o".to_string());
+-    base.pre_link_objects_exe.push("crti.o".to_string());
+-    base.post_link_objects.push("crtn.o".to_string());
+-
+     // These targets statically link libc by default
+     base.crt_static_default = true;
+     // These targets allow the user to choose between static and dynamic linking.

diff --git a/dev-lang/rust/files/1.27.0/0003-Switch-musl-targets-to-link-dynamically-by-default.patch b/dev-lang/rust/files/1.27.0/0003-Switch-musl-targets-to-link-dynamically-by-default.patch
new file mode 100644
index 0000000..f0b4b74
--- /dev/null
+++ b/dev-lang/rust/files/1.27.0/0003-Switch-musl-targets-to-link-dynamically-by-default.patch
@@ -0,0 +1,12 @@
+diff -Naur rustc-1.27.0-src.orig/src/librustc_target/spec/linux_musl_base.rs rustc-1.27.0-src/src/librustc_target/spec/linux_musl_base.rs
+--- rustc-1.27.0-src.orig/src/librustc_target/spec/linux_musl_base.rs	2018-06-27 09:52:22.322947757 -0700
++++ rustc-1.27.0-src/src/librustc_target/spec/linux_musl_base.rs	2018-06-27 10:08:26.989930481 -0700
+@@ -59,8 +59,6 @@
+     base.pre_link_objects_exe.push("crti.o".to_string());
+     base.post_link_objects.push("crtn.o".to_string());
+ 
+-    // These targets statically link libc by default
+-    base.crt_static_default = true;
+     // These targets allow the user to choose between static and dynamic linking.
+     base.crt_static_respected = true;
+ 

diff --git a/dev-lang/rust/files/rust-1.27.0-libressl-2.7.0.patch b/dev-lang/rust/files/rust-1.27.0-libressl-2.7.0.patch
new file mode 100644
index 0000000..d794284
--- /dev/null
+++ b/dev-lang/rust/files/rust-1.27.0-libressl-2.7.0.patch
@@ -0,0 +1,24 @@
+--- a/src/vendor/libgit2-sys/libgit2/src/streams/openssl.c	2018-05-07 18:50:07 UTC
++++ b/src/vendor/libgit2-sys/libgit2/src/streams/openssl.c
+@@ -104,7 +104,8 @@ int git_openssl_stream_global_init(void)
+ 	ssl_opts |= SSL_OP_NO_COMPRESSION;
+ #endif
+ 
+-#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
++#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
++    (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
+ 	SSL_load_error_strings();
+ 	OpenSSL_add_ssl_algorithms();
+ #else
+--- a/src/vendor/libgit2-sys/libgit2/src/streams/openssl.h	2018-05-07 18:50:07 UTC
++++ b/src/vendor/libgit2-sys/libgit2/src/streams/openssl.h
+@@ -31,7 +31,8 @@ extern int git_openssl__set_cert_location(const char *
+ 
+ 
+ 
+-# if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
++# if OPENSSL_VERSION_NUMBER < 0x10100000L || \
++     (defined(LIBRESSL_VERSION_NUMBER) && LIBRESSL_VERSION_NUMBER < 0x20700000L)
+ 
+ GIT_INLINE(BIO_METHOD*) BIO_meth_new(int type, const char *name)
+ {

diff --git a/dev-lang/rust/rust-1.27.0.ebuild b/dev-lang/rust/rust-1.27.0.ebuild
new file mode 100644
index 0000000..a875874
--- /dev/null
+++ b/dev-lang/rust/rust-1.27.0.ebuild
@@ -0,0 +1,355 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+LLVM_MAX_SLOT=6
+PYTHON_COMPAT=( python2_7 python3_{5,6} pypy )
+
+inherit llvm multiprocessing multilib-build python-any-r1 versionator toolchain-funcs
+
+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="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz"
+	KEYWORDS=""
+else
+	ABI_VER="$(get_version_component_range 1-2)"
+	SLOT="stable/${ABI_VER}"
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="~amd64 ~arm ~arm64 ~x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(get_version_component_range 2) - 1)).2"
+
+# there is no cargo 0.28 tag, so use 0.27
+CARGO_DEPEND_VERSION="0.$(($(get_version_component_range 2))).0"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="https://static.rust-lang.org/dist/${SRC} -> rustc-${PV}-src.tar.xz
+	amd64? (
+		elibc_glibc? ( https://static.rust-lang.org/dist/rust-${RUST_STAGE0_VERSION}-x86_64-unknown-linux-gnu.tar.xz )
+		elibc_musl? ( https://portage.smaeul.xyz/distfiles/rust-${RUST_STAGE0_VERSION}-x86_64-unknown-linux-musl.tar.xz )
+	)
+	arm? (
+		elibc_glibc? (
+			https://static.rust-lang.org/dist/rust-${RUST_STAGE0_VERSION}-arm-unknown-linux-gnueabi.tar.xz
+			https://static.rust-lang.org/dist/rust-${RUST_STAGE0_VERSION}-armv7-unknown-linux-gnueabihf.tar.xz
+		)
+		elibc_musl? (
+			https://portage.smaeul.xyz/distfiles/rust-${RUST_STAGE0_VERSION}-arm-unknown-linux-musleabi.tar.xz
+			https://portage.smaeul.xyz/distfiles/rust-${RUST_STAGE0_VERSION}-armv7-unknown-linux-musleabihf.tar.xz
+		)
+	)
+	arm64? (
+		elibc_glibc? ( https://static.rust-lang.org/dist/rust-${RUST_STAGE0_VERSION}-aarch64-unknown-linux-gnu.tar.xz )
+		elibc_musl? ( https://portage.smaeul.xyz/distfiles/rust-${RUST_STAGE0_VERSION}-aarch64-unknown-linux-musl.tar.xz )
+	)
+	x86? (
+		elibc_glibc? ( https://static.rust-lang.org/dist/rust-${RUST_STAGE0_VERSION}-i686-unknown-linux-gnu.tar.xz )
+		elibc_musl? ( https://portage.smaeul.xyz/distfiles/rust-${RUST_STAGE0_VERSION}-i686-unknown-linux-musl.tar.xz )
+	)
+"
+
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430
+	NVPTX PowerPC Sparc SystemZ X86 XCore )
+ALL_LLVM_TARGETS=( "${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="debug doc extended jemalloc libressl system-llvm wasm ${ALL_LLVM_TARGETS[*]}"
+
+RDEPEND=">=app-eselect/eselect-rust-0.3_pre20150425
+		jemalloc? ( dev-libs/jemalloc )
+		system-llvm? ( sys-devel/llvm )
+		extended? (
+			libressl? ( dev-libs/libressl:0= )
+			!libressl? ( dev-libs/openssl:0= )
+			net-libs/http-parser:0/2.8.0
+			net-libs/libssh2:=
+			net-misc/curl:=[ssl]
+			sys-libs/zlib:=
+			!dev-util/rustfmt
+			!dev-util/cargo
+		)
+"
+DEPEND="${RDEPEND}
+	${PYTHON_DEPS}
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	!system-llvm? (
+		dev-util/cmake
+		dev-util/ninja
+	)
+"
+PDEPEND="!extended? ( >=dev-util/cargo-${CARGO_DEPEND_VERSION} )"
+
+REQUIRED_USE="!system-llvm? ( || ( ${ALL_LLVM_TARGETS[*]} ) )"
+
+PATCHES=(
+	"${FILESDIR}/1.25.0/0001-Require-static-native-libraries-when-linking-static-.patch"
+	"${FILESDIR}/1.27.0/0002-Remove-nostdlib-and-musl_root-from-musl-targets.patch"
+	"${FILESDIR}/1.27.0/0003-Switch-musl-targets-to-link-dynamically-by-default.patch"
+	"${FILESDIR}/1.25.0/0004-Prefer-libgcc_eh-over-libunwind-for-musl.patch"
+	"${FILESDIR}/1.25.0/0005-Fix-LLVM-build.patch"
+	"${FILESDIR}/1.25.0/0006-Fix-rustdoc-for-cross-targets.patch"
+	"${FILESDIR}/1.25.0/0007-Add-openssl-configuration-for-musl-targets.patch"
+	"${FILESDIR}/1.26.2/0008-Don-t-pass-CFLAGS-to-the-C-compiler.patch"
+	"${FILESDIR}/1.25.0/0009-liblibc.patch"
+	"${FILESDIR}/1.25.0/0010-llvm.patch"
+	"${FILESDIR}/rust-1.27.0-libressl-2.7.0.patch"
+)
+
+S="${WORKDIR}/${MY_P}-src"
+
+toml_usex() {
+	usex "$1" true false
+}
+
+rust_host() {
+	case "${1}" in
+		arm)
+			if [[ ${1} == ${DEFAULT_ABI} ]]; then
+				if [[ ${CHOST} == armv7* ]]; then
+					RUSTARCH=armv7
+				else
+					RUSTARCH=arm
+				fi
+			else
+				RUSTARCH=arm
+			fi ;;
+		amd64)
+			RUSTARCH=x86_64 ;;
+		arm64)
+			RUSTARCH=aarch64 ;;
+		x86)
+			RUSTARCH=i686 ;;
+	esac
+	case "${1}" in
+		arm)
+			if [[ ${1} == ${DEFAULT_ABI} ]]; then
+				if [[ ${CHOST} == armv7a-hardfloat* ]]; then
+					RUSTLIBC=${ELIBC/glibc/gnu}eabihf
+				else
+					RUSTLIBC=${CHOST##*-}
+				fi
+			else
+				RUSTLIBC=${ELIBC/glibc/gnu}
+			fi ;;
+		*)
+			RUSTLIBC=${ELIBC/glibc/gnu} ;;
+	esac
+	RUSTHOST=${RUSTARCH}-unknown-${KERNEL}-${RUSTLIBC}
+	echo "${RUSTHOST}"
+}
+
+pkg_setup() {
+	export RUST_BACKTRACE=1
+	if use system-llvm; then
+		llvm_pkg_setup
+		local llvm_config="$(get_llvm_prefix "$LLVM_MAX_SLOT")/bin/llvm-config"
+
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="$RUSTFLAGS -L native=$("$llvm_config" --libdir)"
+	fi
+
+	python-any-r1_pkg_setup
+}
+
+src_prepare() {
+	"${WORKDIR}/rust-${RUST_STAGE0_VERSION}-$(rust_host ${ARCH})/install.sh" \
+		--destdir="${WORKDIR}/stage0" \
+		--prefix=/ \
+		--components=rust-std-$(rust_host ${ARCH}),rustc,cargo \
+		--disable-ldconfig \
+		|| die
+
+	default
+}
+
+src_configure() {
+	local rust_target="" rust_targets="" rust_target_name 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_host ${v##*.})\""
+	done
+	if use wasm; then
+		rust_targets="${rust_targets},\"wasm32-unknown-unknown\""
+	fi
+	rust_targets="${rust_targets#,}"
+
+	rust_target=$(rust_host $ARCH)
+
+	cat <<- EOF > "${S}"/config.toml
+		[llvm]
+		ninja = true
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		targets = "${LLVM_TARGETS// /;}"
+		[build]
+		build = "${rust_target}"
+		host = ["${rust_target}"]
+		target = [${rust_targets}]
+		cargo = "${WORKDIR}/stage0/bin/cargo"
+		rustc = "${WORKDIR}/stage0/bin/rustc"
+		docs = $(toml_usex doc)
+		compiler-docs = $(toml_usex doc)
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		verbose = 2
+		extended = $(toml_usex extended)
+		[install]
+		prefix = "${EPREFIX}/usr"
+		libdir = "$(get_libdir)"
+		docdir = "share/doc/${P}"
+		mandir = "share/${P}/man"
+		[rust]
+		optimize = $(toml_usex !debug)
+		debuginfo = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		use-jemalloc = $(toml_usex jemalloc)
+		default-linker = "$(tc-getCC)"
+		channel = "${SLOT%%/*}"
+		rpath = false
+		lld = $(toml_usex wasm)
+		optimize-tests = $(toml_usex !debug)
+		dist-src = false
+		[dist]
+		src-tarball = false
+	EOF
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_host ${v##*.})
+		arch_cflags="$(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
+
+		use system-llvm && cat <<- EOF >> "${S}"/config.toml
+			llvm-config = "$(get_llvm_prefix "$LLVM_MAX_SLOT")/bin/llvm-config"
+		EOF
+	done
+
+	if use wasm; then
+		cat <<- EOF >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "lld"
+		EOF
+	fi
+}
+
+src_compile() {
+	env $(cat "${S}"/config.env)\
+		./x.py build --verbose --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_install() {
+	local rust_target abi_libdir
+
+	env DESTDIR="${D}" ./x.py install || die
+
+	mv "${D}/usr/bin/rustc" "${D}/usr/bin/rustc-${PV}" || die
+	mv "${D}/usr/bin/rustdoc" "${D}/usr/bin/rustdoc-${PV}" || die
+	mv "${D}/usr/bin/rust-gdb" "${D}/usr/bin/rust-gdb-${PV}" || die
+	mv "${D}/usr/bin/rust-lldb" "${D}/usr/bin/rust-lldb-${PV}" || die
+
+	# Copy shared library versions of standard libraries for all targets
+	# into the system's abi-dependent lib directories because the rust
+	# installer only does so for the native ABI.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		if [ ${v##*.} = ${DEFAULT_ABI} ]; then
+			continue
+		fi
+		abi_libdir=$(get_abi_LIBDIR ${v##*.})
+		rust_target=$(rust_host ${v##*.})
+		mkdir -p "${D}/usr/${abi_libdir}"
+		cp "${D}/usr/$(get_libdir)/rustlib/${rust_target}/lib"/*.so \
+		   "${D}/usr/${abi_libdir}" || die
+	done
+
+	rm "${D}/usr/$(get_libdir)/rustlib/components" || die
+	rm "${D}/usr/$(get_libdir)/rustlib/install.log" || die
+	rm "${D}/usr/$(get_libdir)/rustlib/manifest-rust-std-$(rust_host ${ARCH})" || die
+	rm "${D}/usr/$(get_libdir)/rustlib/manifest-rustc" || die
+	rm "${D}/usr/$(get_libdir)/rustlib/rust-installer-version" || die
+	rm "${D}/usr/$(get_libdir)/rustlib/uninstall.sh" || die
+
+
+	if use doc; then
+		rm "${D}/usr/$(get_libdir)/rustlib/manifest-rust-docs" || die
+	fi
+
+	if use extended; then
+		rm "${D}/usr/$(get_libdir)/rustlib/manifest-cargo" || die
+		rm "${D}/usr/$(get_libdir)/rustlib/manifest-rls-preview" || die
+		rm "${D}/usr/$(get_libdir)/rustlib/manifest-rust-analysis-$(rust_host ${ARCH})" || die
+		rm "${D}/usr/$(get_libdir)/rustlib/manifest-rust-src" || die
+		rm "${D}/usr/$(get_libdir)/rustlib/manifest-rustfmt-preview" || die
+
+		rm "${D}/usr/share/doc/${P}/LICENSE-APACHE.old" || die
+		rm "${D}/usr/share/doc/${P}/LICENSE-MIT.old" || die
+	fi
+
+	rm "${D}/usr/share/doc/${P}/LICENSE-APACHE" || die
+	rm "${D}/usr/share/doc/${P}/LICENSE-MIT" || die
+
+	docompress "/usr/share/${P}/man"
+
+	cat <<-EOF > "${T}"/50${P}
+		MANPATH="/usr/share/${P}/man"
+	EOF
+	doenvd "${T}"/50${P}
+
+	cat <<-EOF > "${T}/provider-${P}"
+		/usr/bin/rustdoc
+		/usr/bin/rust-gdb
+		/usr/bin/rust-lldb
+	EOF
+	dodir /etc/env.d/rust
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+}
+
+pkg_postinst() {
+	eselect rust update --if-unset
+
+	elog "Rust installs a helper script for calling GDB and LLDB,"
+	elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+
+	if has_version app-editors/emacs || has_version app-editors/emacs-vcs; 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
+
+	if has_version 'app-shells/zsh'; then
+		elog "install app-shells/rust-zshcomp to get zsh completion for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust unset --if-invalid
+}