development/rustup: Added (The Rust toolchain installer).

Signed-off-by: David Spencer <idlemoor@slackbuilds.org>

4 files changed, 684 insertions, 0 deletions

diff --git a/development/rustup/README b/development/rustup/README
new file mode 100644
index 0000000000..3f09ade329
--- /dev/null
+++ b/development/rustup/README
@@ -0,0 +1,17 @@
+rustup - The Rust toolchain installer
+
+To use the versions of rust installed through rustup, you'll need to add links
+to the rustup binary on your path before the system rust.
+
+You are free to choose where, but here is an example for a single user:
+
+mkdir -p $HOME/.rustup/shims
+for lnk in cargo cargo-fmt rls rustc rustdoc rustfmt rust-gdb rust-lldb ; do
+  (
+    cd $HOME/.rustup/shims
+    ln -s /usr/bin/rustup $lnk
+  )
+done
+
+Then add the directory to your path (.bashrc for example):
+export PATH="$HOME/.rustup/shims:$PATH"
diff --git a/development/rustup/rustup.SlackBuild b/development/rustup/rustup.SlackBuild
new file mode 100644
index 0000000000..02c8a8bf22
--- /dev/null
+++ b/development/rustup/rustup.SlackBuild
@@ -0,0 +1,312 @@
+#!/bin/sh
+
+# Slackware build script for rustup
+
+# Copyright 2017-2018 Andrew Clemons, Wellington New Zealand
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+PRGNAM=rustup
+VERSION=${VERSION:-1.11.0}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+
+  if [ "$ARCH" = "i586" ]; then
+    if rustc -Vv | grep host | grep i686 > /dev/null ; then
+      ARCH=i686
+    fi
+  fi
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  CARGOTARGET="--target i586-unknown-linux-gnu"
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  CARGOTARGET="--target i686-unknown-linux-gnu"
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  CARGOTARGET="--target x86_64-unknown-linux-gnu"
+else
+  SLKCFLAGS="-O2"
+  CARGOTARGET=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM.rs-$VERSION
+tar xvf $CWD/$PRGNAM.rs-$VERSION.tar.gz
+cd $PRGNAM.rs-$VERSION
+
+# build offline
+# configuration tells cargo to use the configured directory
+# for dependencies intead of downloading from crates.io
+mkdir .cargo
+cat << EOF >> .cargo/config
+[source.crates-io]
+registry = 'https://github.com/rust-lang/crates.io-index'
+replace-with = 'vendored-sources'
+
+[source.vendored-sources]
+directory = '$(pwd)/vendor'
+EOF
+
+# deps and versions come from Cargo.lock
+mkdir vendor
+(
+  cd vendor
+
+  for dependency in adler32=1.0.2 \
+                    aho-corasick=0.5.3 \
+                    aho-corasick=0.6.4 \
+                    ansi_term=0.10.2 \
+                    arrayref=0.3.4 \
+                    atty=0.2.6 \
+                    backtrace-sys=0.1.16 \
+                    backtrace=0.3.5 \
+                    base64=0.9.0 \
+                    bitflags=0.9.1 \
+                    bitflags=1.0.1 \
+                    block-buffer=0.3.3 \
+                    build_const=0.2.0 \
+                    byte-tools=0.2.0 \
+                    byteorder=1.2.1 \
+                    bytes=0.4.6 \
+                    cc=1.0.4 \
+                    cfg-if=0.1.2 \
+                    clap=2.30.0 \
+                    core-foundation-sys=0.2.3 \
+                    core-foundation=0.2.3 \
+                    crc=1.7.0 \
+                    curl-sys=0.4.1 \
+                    curl=0.4.11 \
+                    digest=0.7.2 \
+                    dtoa=0.4.2 \
+                    either=1.4.0 \
+                    env_proxy=0.2.0 \
+                    error-chain=0.11.0 \
+                    fake-simd=0.1.2 \
+                    filetime=0.1.15 \
+                    flate2=1.0.1 \
+                    foreign-types-shared=0.1.1 \
+                    foreign-types=0.3.2 \
+                    fuchsia-zircon-sys=0.3.3 \
+                    fuchsia-zircon=0.3.3 \
+                    futures-cpupool=0.1.8 \
+                    futures=0.1.18 \
+                    gcc=0.3.54 \
+                    generic-array=0.9.0 \
+                    httparse=1.2.4 \
+                    hyper-tls=0.1.2 \
+                    hyper=0.11.18 \
+                    idna=0.1.4 \
+                    iovec=0.1.2 \
+                    itertools=0.7.6 \
+                    itoa=0.3.4 \
+                    kernel32-sys=0.2.2 \
+                    language-tags=0.2.2 \
+                    lazy_static=0.2.11 \
+                    lazy_static=1.0.0 \
+                    lazycell=0.6.0 \
+                    libc=0.2.36 \
+                    libflate=0.1.14 \
+                    libz-sys=1.0.18 \
+                    log=0.3.9 \
+                    log=0.4.1 \
+                    lzma-sys=0.1.9 \
+                    markdown=0.2.0 \
+                    matches=0.1.6 \
+                    memchr=0.1.11 \
+                    memchr=2.0.1 \
+                    mime=0.3.5 \
+                    mime_guess=2.0.0-alpha.3 \
+                    miniz-sys=0.1.10 \
+                    mio=0.6.13 \
+                    miow=0.2.1 \
+                    native-tls=0.1.5 \
+                    net2=0.2.31 \
+                    num-traits=0.1.43 \
+                    num-traits=0.2.0 \
+                    num_cpus=1.8.0 \
+                    ole32-sys=0.2.0 \
+                    openssl-probe=0.1.2 \
+                    openssl-sys=0.9.25 \
+                    openssl=0.9.24 \
+                    percent-encoding=1.0.1 \
+                    phf=0.7.21 \
+                    phf_codegen=0.7.21 \
+                    phf_generator=0.7.21 \
+                    phf_shared=0.7.21 \
+                    pipeline=0.5.0 \
+                    pkg-config=0.3.9 \
+                    quote=0.3.15 \
+                    rand=0.3.22 \
+                    rand=0.4.2 \
+                    redox_syscall=0.1.37 \
+                    redox_termios=0.1.1 \
+                    regex-syntax=0.3.9 \
+                    regex-syntax=0.4.2 \
+                    regex=0.1.80 \
+                    regex=0.2.6 \
+                    relay=0.1.1 \
+                    remove_dir_all=0.3.0 \
+                    reqwest=0.8.4 \
+                    rustc-demangle=0.1.5 \
+                    safemem=0.2.0 \
+                    same-file=1.0.2 \
+                    schannel=0.1.10 \
+                    scoped-tls=0.1.0 \
+                    scopeguard=0.3.3 \
+                    security-framework-sys=0.1.16 \
+                    security-framework=0.1.16 \
+                    semver-parser=0.7.0 \
+                    semver=0.9.0 \
+                    serde=1.0.27 \
+                    serde_derive=1.0.27 \
+                    serde_derive_internals=0.19.0 \
+                    serde_json=1.0.9 \
+                    serde_urlencoded=0.5.1 \
+                    sha2=0.7.0 \
+                    siphasher=0.2.2 \
+                    slab=0.3.0 \
+                    slab=0.4.0 \
+                    smallvec=0.2.1 \
+                    socket2=0.3.1 \
+                    strsim=0.7.0 \
+                    syn=0.11.11 \
+                    synom=0.11.3 \
+                    take=0.1.0 \
+                    tar=0.4.14 \
+                    tempdir=0.3.6 \
+                    tempfile=2.2.0 \
+                    term=0.4.6 \
+                    termion=1.5.1 \
+                    textwrap=0.9.0 \
+                    thread-id=2.0.0 \
+                    thread_local=0.2.7 \
+                    thread_local=0.3.5 \
+                    time=0.1.39 \
+                    tokio-core=0.1.12 \
+                    tokio-io=0.1.5 \
+                    tokio-proto=0.1.1 \
+                    tokio-service=0.1.0 \
+                    tokio-tls=0.1.4 \
+                    toml=0.4.5 \
+                    typenum=1.9.0 \
+                    unicase=1.4.2 \
+                    unicase=2.1.0 \
+                    unicode-bidi=0.3.4 \
+                    unicode-normalization=0.1.5 \
+                    unicode-width=0.1.4 \
+                    unicode-xid=0.0.4 \
+                    unreachable=1.0.0 \
+                    url=1.6.0 \
+                    utf8-ranges=0.1.3 \
+                    utf8-ranges=1.0.0 \
+                    uuid=0.5.1 \
+                    vcpkg=0.2.2 \
+                    vec_map=0.8.0 \
+                    version_check=0.1.3 \
+                    void=1.0.2 \
+                    wait-timeout=0.1.5 \
+                    walkdir=2.1.3 \
+                    winapi-build=0.1.1 \
+                    winapi-i686-pc-windows-gnu=0.4.0 \
+                    winapi-x86_64-pc-windows-gnu=0.4.0 \
+                    winapi=0.2.8 \
+                    winapi=0.3.4 \
+                    winreg=0.5.0 \
+                    ws2_32-sys=0.2.1 \
+                    xattr=0.1.11 \
+                    xz2=0.1.4; do
+    dep="$(echo "$dependency" | cut -d= -f1)"
+    ver="$(echo "$dependency" | cut -d= -f2)"
+
+    tar xvf $CWD/$dep-$ver.crate
+
+    touch $dep-$ver/.cargo-ok
+
+    # generate checksum
+    {
+      printf "{\n"
+      printf '    "files": {\n'
+
+      (
+        cd $dep-$ver
+        find . -type f -print0 | xargs -0 sha256sum | sed -n '/\.cargo-checksum\.json/!p' | sed 's/\.\///;s/^\([^ ]*\)[[:space:]][[:space:]]*\(.*\)$/"\2":"\1",/'
+      ) | sed '$ s/,$//'
+
+      printf "    },\n"
+      printf '    "package": "'
+
+      sha256sum "$CWD/$dep-$ver.crate" | cut -f1 -d' ' | sed 's/$/"/'
+
+      printf "}\n"
+    } | python -c "import sys, json; data = sys.stdin.read(); print json.dumps(json.loads(data), sort_keys=True, indent=4, separators=(',', ' : '))" > $dep-$ver/.cargo-checksum.json
+  done
+)
+
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+cargo build --release --features no-self-update $CARGOTARGET
+
+mkdir -p $PKG/usr/bin/
+
+find target -name rustup-init -exec install -m 755 {} $PKG/usr/bin/rustup \;
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/share/bash-completion/completions
+$PKG/usr/bin/rustup completions bash > $PKG/usr/share/bash-completion/completions/rustup
+
+mkdir -p $PKG/usr/share/zsh/site-functions
+$PKG/usr/bin/rustup completions zsh > $PKG/usr/share/zsh/site-functions/_rustup
+
+chmod 0644 $PKG/usr/share/zsh/site-functions/_rustup $PKG/usr/share/bash-completion/completions/rustup
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a LICENSE-APACHE LICENSE-MIT README.md $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
diff --git a/development/rustup/rustup.info b/development/rustup/rustup.info
new file mode 100644
index 0000000000..bf437ce2f9
--- /dev/null
+++ b/development/rustup/rustup.info
@@ -0,0 +1,336 @@
+PRGNAM="rustup"
+VERSION="1.11.0"
+HOMEPAGE="https://github.com/rust-lang-nursery/rustup.rs"
+DOWNLOAD="https://github.com/rust-lang-nursery/rustup.rs/archive/1.11.0/rustup.rs-1.11.0.tar.gz \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/adler32/adler32-1.0.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/aho-corasick/aho-corasick-0.5.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/aho-corasick/aho-corasick-0.6.4.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/ansi_term/ansi_term-0.10.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/arrayref/arrayref-0.3.4.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/atty/atty-0.2.6.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/backtrace-sys/backtrace-sys-0.1.16.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/backtrace/backtrace-0.3.5.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/base64/base64-0.9.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/bitflags/bitflags-0.9.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/bitflags/bitflags-1.0.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/block-buffer/block-buffer-0.3.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/build_const/build_const-0.2.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/byte-tools/byte-tools-0.2.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/byteorder/byteorder-1.2.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/bytes/bytes-0.4.6.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/cc/cc-1.0.4.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/cfg-if/cfg-if-0.1.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/clap/clap-2.30.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/core-foundation-sys/core-foundation-sys-0.2.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/core-foundation/core-foundation-0.2.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/crc/crc-1.7.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/curl-sys/curl-sys-0.4.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/curl/curl-0.4.11.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/digest/digest-0.7.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/dtoa/dtoa-0.4.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/either/either-1.4.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/env_proxy/env_proxy-0.2.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/error-chain/error-chain-0.11.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/fake-simd/fake-simd-0.1.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/filetime/filetime-0.1.15.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/flate2/flate2-1.0.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/foreign-types-shared/foreign-types-shared-0.1.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/foreign-types/foreign-types-0.3.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/fuchsia-zircon-sys/fuchsia-zircon-sys-0.3.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/fuchsia-zircon/fuchsia-zircon-0.3.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/futures-cpupool/futures-cpupool-0.1.8.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/futures/futures-0.1.18.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/gcc/gcc-0.3.54.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/generic-array/generic-array-0.9.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/httparse/httparse-1.2.4.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/hyper-tls/hyper-tls-0.1.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/hyper/hyper-0.11.18.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/idna/idna-0.1.4.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/iovec/iovec-0.1.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/itertools/itertools-0.7.6.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/itoa/itoa-0.3.4.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/kernel32-sys/kernel32-sys-0.2.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/language-tags/language-tags-0.2.2.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/lazy_static/lazy_static-0.2.11.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/lazy_static/lazy_static-1.0.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/lazycell/lazycell-0.6.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/libc/libc-0.2.36.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/libflate/libflate-0.1.14.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/libz-sys/libz-sys-1.0.18.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/log/log-0.3.9.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/log/log-0.4.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/lzma-sys/lzma-sys-0.1.9.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/markdown/markdown-0.2.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/matches/matches-0.1.6.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/memchr/memchr-0.1.11.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/memchr/memchr-2.0.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/mime/mime-0.3.5.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/mime_guess/mime_guess-2.0.0-alpha.3.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/miniz-sys/miniz-sys-0.1.10.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/mio/mio-0.6.13.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/miow/miow-0.2.1.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/native-tls/native-tls-0.1.5.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/net2/net2-0.2.31.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/num-traits/num-traits-0.1.43.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/num-traits/num-traits-0.2.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/num_cpus/num_cpus-1.8.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/ole32-sys/ole32-sys-0.2.0.crate \
+          https://crates-io.s3-us-west-1.amazonaws.com/crates/openssl-probe/openssl-probe-0.1.2.crate \
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+MAINTAINER="Andrew Clemons"
+EMAIL="andrew.clemons@gmail.com"
diff --git a/development/rustup/slack-desc b/development/rustup/slack-desc
new file mode 100644
index 0000000000..c9c2ff6bcd
--- /dev/null
+++ b/development/rustup/slack-desc
@@ -0,0 +1,19 @@
+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+      |-----handy-ruler------------------------------------------------------|
+rustup: rustup (The Rust toolchain installer)
+rustup:
+rustup: rustup installs The Rust Programming Language from the official
+rustup: release channels, enabling you to easily switch between stable,
+rustup: beta, and nightly compilers and keep them updated.
+rustup:
+rustup: https://github.com/rust-lang-nursery/rustup.rs
+rustup:
+rustup:
+rustup:
+rustup: