Flex も Rustup も インストールできない

Comments

1. 

   @bdrcc

   Questioner

   more_horiz

   回答ありがとうございます。
   コマンド -> 結果 を載せます。

   ・元の状態で

   pip -V -> command not found
   pip3 -V -> pip 22.2.1 
   python -V -> Python 2.7.10
   python3 -V -> Python 3.10.6
   

   ・仮想環境下で

   pip -V -> pip 22.2.1
   pip3 -V -> pip 22.2.1
   python -V -> Python 3.10.6
   python3 -V -> Python 3.10.6
   

   ※ 今回のflexは、仮想環境下にインストールできないか、を考えていました
   ※ 古いmacのため、python2がデフォルトで入っているのは知っていましたが、それが原因でしょうか・・・。

2. 

   @nak435

   more_horiz

   pip install fletがエラーとなったのは、仮想環境でしょうか？

   ※ 古いmacのため、python2がデフォルトで入っているのは知っていましたが、それが原因でしょうか・・・。

   ただいま確認中です。

3. 

   @bdrcc

   Questioner

   more_horiz

   そうです。仮想環境下でインストールを試みました。
   Numpy や Pandas など有名なものは、インストールができています。

4. 

   @nak435

   more_horiz

   苦戦中です。

   homebrew はインストール済みですか？
   次のコマンドの結果を貼ってください。
   （出力量が多いと思うので、ターミナルのテキストをコードブロックにコピペで）

   brew --version
   brew doctor
   brew list
   

5. 

   @nak435

   more_horiz

   curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
   自分の環境だとエラーにならずインストール出来ました。curl もアップデートせず 7.54.0 で。
   質問者さんのエラーの原因を調べていたのですが、結局よく分からないため、自分がダウンローした内容を下に貼りますので、これでインストールしてみてください。

   sh.rustup.rs

   #!/bin/sh
   # shellcheck shell=dash
   # shellcheck disable=SC2039  # local is non-POSIX
   
   # This is just a little script that can be downloaded from the internet to
   # install rustup. It just does platform detection, downloads the installer
   # and runs it.
   
   # It runs on Unix shells like {a,ba,da,k,z}sh. It uses the common `local`
   # extension. Note: Most shells limit `local` to 1 var per line, contra bash.
   
   # Some versions of ksh have no `local` keyword. Alias it to `typeset`, but
   # beware this makes variables global with f()-style function syntax in ksh93.
   # mksh has this alias by default.
   has_local() {
       # shellcheck disable=SC2034  # deliberately unused
       local _has_local
   }
   
   has_local 2>/dev/null || alias local=typeset
   
   is_zsh() {
       [ -n "${ZSH_VERSION-}" ]
   }
   
   set -u
   
   # If RUSTUP_UPDATE_ROOT is unset or empty, default it.
   RUSTUP_UPDATE_ROOT="${RUSTUP_UPDATE_ROOT:-https://static.rust-lang.org/rustup}"
   
   # NOTICE: If you change anything here, please make the same changes in setup_mode.rs
   usage() {
       cat <<EOF
   rustup-init 1.27.1 (a8e4f5c64 2024-04-24)
   
   The installer for rustup
   
   Usage: rustup-init[EXE] [OPTIONS]
   
   Options:
     -v, --verbose
             Enable verbose output
     -q, --quiet
             Disable progress output
     -y
             Disable confirmation prompt.
         --default-host <default-host>
             Choose a default host triple
         --default-toolchain <default-toolchain>
             Choose a default toolchain to install. Use 'none' to not install any toolchains at all
         --profile <profile>
             [default: default] [possible values: minimal, default, complete]
     -c, --component <components>...
             Component name to also install
     -t, --target <targets>...
             Target name to also install
         --no-update-default-toolchain
             Don't update any existing default toolchain after install
         --no-modify-path
             Don't configure the PATH environment variable
     -h, --help
             Print help
     -V, --version
             Print version
   EOF
   }
   
   main() {
       downloader --check
       need_cmd uname
       need_cmd mktemp
       need_cmd chmod
       need_cmd mkdir
       need_cmd rm
       need_cmd rmdir
   
       get_architecture || return 1
       local _arch="$RETVAL"
       assert_nz "$_arch" "arch"
   
       local _ext=""
       case "$_arch" in
           *windows*)
               _ext=".exe"
               ;;
       esac
   
       local _url="${RUSTUP_UPDATE_ROOT}/dist/${_arch}/rustup-init${_ext}"
   
       local _dir
       if ! _dir="$(ensure mktemp -d)"; then
           # Because the previous command ran in a subshell, we must manually
           # propagate exit status.
           exit 1
       fi
       local _file="${_dir}/rustup-init${_ext}"
   
       local _ansi_escapes_are_valid=false
       if [ -t 2 ]; then
           if [ "${TERM+set}" = 'set' ]; then
               case "$TERM" in
                   xterm*|rxvt*|urxvt*|linux*|vt*)
                       _ansi_escapes_are_valid=true
                   ;;
               esac
           fi
       fi
   
       # check if we have to use /dev/tty to prompt the user
       local need_tty=yes
       for arg in "$@"; do
           case "$arg" in
               --help)
                   usage
                   exit 0
                   ;;
               *)
                   OPTIND=1
                   if [ "${arg%%--*}" = "" ]; then
                       # Long option (other than --help);
                       # don't attempt to interpret it.
                       continue
                   fi
                   while getopts :hy sub_arg "$arg"; do
                       case "$sub_arg" in
                           h)
                               usage
                               exit 0
                               ;;
                           y)
                               # user wants to skip the prompt --
                               # we don't need /dev/tty
                               need_tty=no
                               ;;
                           *)
                               ;;
                           esac
                   done
                   ;;
           esac
       done
   
       if $_ansi_escapes_are_valid; then
           printf "\33[1minfo:\33[0m downloading installer\n" 1>&2
       else
           printf '%s\n' 'info: downloading installer' 1>&2
       fi
   
       ensure mkdir -p "$_dir"
       ensure downloader "$_url" "$_file" "$_arch"
       ensure chmod u+x "$_file"
       if [ ! -x "$_file" ]; then
           printf '%s\n' "Cannot execute $_file (likely because of mounting /tmp as noexec)." 1>&2
           printf '%s\n' "Please copy the file to a location where you can execute binaries and run ./rustup-init${_ext}." 1>&2
           exit 1
       fi
   
       if [ "$need_tty" = "yes" ] && [ ! -t 0 ]; then
           # The installer is going to want to ask for confirmation by
           # reading stdin.  This script was piped into `sh` though and
           # doesn't have stdin to pass to its children. Instead we're going
           # to explicitly connect /dev/tty to the installer's stdin.
           if [ ! -t 1 ]; then
               err "Unable to run interactively. Run with -y to accept defaults, --help for additional options"
           fi
   
           ignore "$_file" "$@" < /dev/tty
       else
           ignore "$_file" "$@"
       fi
   
       local _retval=$?
   
       ignore rm "$_file"
       ignore rmdir "$_dir"
   
       return "$_retval"
   }
   
   check_proc() {
       # Check for /proc by looking for the /proc/self/exe link
       # This is only run on Linux
       if ! test -L /proc/self/exe ; then
           err "fatal: Unable to find /proc/self/exe.  Is /proc mounted?  Installation cannot proceed without /proc."
       fi
   }
   
   get_bitness() {
       need_cmd head
       # Architecture detection without dependencies beyond coreutils.
       # ELF files start out "\x7fELF", and the following byte is
       #   0x01 for 32-bit and
       #   0x02 for 64-bit.
       # The printf builtin on some shells like dash only supports octal
       # escape sequences, so we use those.
       local _current_exe_head
       _current_exe_head=$(head -c 5 /proc/self/exe )
       if [ "$_current_exe_head" = "$(printf '\177ELF\001')" ]; then
           echo 32
       elif [ "$_current_exe_head" = "$(printf '\177ELF\002')" ]; then
           echo 64
       else
           err "unknown platform bitness"
       fi
   }
   
   is_host_amd64_elf() {
       need_cmd head
       need_cmd tail
       # ELF e_machine detection without dependencies beyond coreutils.
       # Two-byte field at offset 0x12 indicates the CPU,
       # but we're interested in it being 0x3E to indicate amd64, or not that.
       local _current_exe_machine
       _current_exe_machine=$(head -c 19 /proc/self/exe | tail -c 1)
       [ "$_current_exe_machine" = "$(printf '\076')" ]
   }
   
   get_endianness() {
       local cputype=$1
       local suffix_eb=$2
       local suffix_el=$3
   
       # detect endianness without od/hexdump, like get_bitness() does.
       need_cmd head
       need_cmd tail
   
       local _current_exe_endianness
       _current_exe_endianness="$(head -c 6 /proc/self/exe | tail -c 1)"
       if [ "$_current_exe_endianness" = "$(printf '\001')" ]; then
           echo "${cputype}${suffix_el}"
       elif [ "$_current_exe_endianness" = "$(printf '\002')" ]; then
           echo "${cputype}${suffix_eb}"
       else
           err "unknown platform endianness"
       fi
   }
   
   # Detect the Linux/LoongArch UAPI flavor, with all errors being non-fatal.
   # Returns 0 or 234 in case of successful detection, 1 otherwise (/tmp being
   # noexec, or other causes).
   check_loongarch_uapi() {
       need_cmd base64
   
       local _tmp
       if ! _tmp="$(ensure mktemp)"; then
           return 1
       fi
   
       # Minimal Linux/LoongArch UAPI detection, exiting with 0 in case of
       # upstream ("new world") UAPI, and 234 (-EINVAL truncated) in case of
       # old-world (as deployed on several early commercial Linux distributions
       # for LoongArch).
       #
       # See https://gist.github.com/xen0n/5ee04aaa6cecc5c7794b9a0c3b65fc7f for
       # source to this helper binary.
       ignore base64 -d > "$_tmp" <<EOF
   f0VMRgIBAQAAAAAAAAAAAAIAAgEBAAAAeAAgAAAAAABAAAAAAAAAAAAAAAAAAAAAQQAAAEAAOAAB
   AAAAAAAAAAEAAAAFAAAAAAAAAAAAAAAAACAAAAAAAAAAIAAAAAAAJAAAAAAAAAAkAAAAAAAAAAAA
   AQAAAAAABCiAAwUAFQAGABUAByCAAwsYggMAACsAC3iBAwAAKwAxen0n
   EOF
   
       ignore chmod u+x "$_tmp"
       if [ ! -x "$_tmp" ]; then
           ignore rm "$_tmp"
           return 1
       fi
   
       "$_tmp"
       local _retval=$?
   
       ignore rm "$_tmp"
       return "$_retval"
   }
   
   ensure_loongarch_uapi() {
       check_loongarch_uapi
       case $? in
           0)
               return 0
               ;;
           234)
               echo >&2
               echo 'Your Linux kernel does not provide the ABI required by this Rust' >&2
               echo 'distribution.  Please check with your OS provider for how to obtain a' >&2
               echo 'compatible Rust package for your system.' >&2
               echo >&2
               exit 1
               ;;
           *)
               echo "Warning: Cannot determine current system's ABI flavor, continuing anyway." >&2
               echo >&2
               echo 'Note that the official Rust distribution only works with the upstream' >&2
               echo 'kernel ABI.  Installation will fail if your running kernel happens to be' >&2
               echo 'incompatible.' >&2
               ;;
       esac
   }
   
   get_architecture() {
       local _ostype _cputype _bitness _arch _clibtype
       _ostype="$(uname -s)"
       _cputype="$(uname -m)"
       _clibtype="gnu"
   
       if [ "$_ostype" = Linux ]; then
           if [ "$(uname -o)" = Android ]; then
               _ostype=Android
           fi
           if ldd --version 2>&1 | grep -q 'musl'; then
               _clibtype="musl"
           fi
       fi
   
       if [ "$_ostype" = Darwin ]; then
           # Darwin `uname -m` can lie due to Rosetta shenanigans. If you manage to
           # invoke a native shell binary and then a native uname binary, you can
           # get the real answer, but that's hard to ensure, so instead we use
           # `sysctl` (which doesn't lie) to check for the actual architecture.
           if [ "$_cputype" = i386 ]; then
               # Handling i386 compatibility mode in older macOS versions (<10.15)
               # running on x86_64-based Macs.
               # Starting from 10.15, macOS explicitly bans all i386 binaries from running.
               # See: <https://support.apple.com/en-us/HT208436>
   
               # Avoid `sysctl: unknown oid` stderr output and/or non-zero exit code.
               if sysctl hw.optional.x86_64 2> /dev/null || true | grep -q ': 1'; then
                   _cputype=x86_64
               fi
           elif [ "$_cputype" = x86_64 ]; then
               # Handling x86-64 compatibility mode (a.k.a. Rosetta 2)
               # in newer macOS versions (>=11) running on arm64-based Macs.
               # Rosetta 2 is built exclusively for x86-64 and cannot run i386 binaries.
   
               # Avoid `sysctl: unknown oid` stderr output and/or non-zero exit code.
               if sysctl hw.optional.arm64 2> /dev/null || true | grep -q ': 1'; then
                   _cputype=arm64
               fi
           fi
       fi
   
       if [ "$_ostype" = SunOS ]; then
           # Both Solaris and illumos presently announce as "SunOS" in "uname -s"
           # so use "uname -o" to disambiguate.  We use the full path to the
           # system uname in case the user has coreutils uname first in PATH,
           # which has historically sometimes printed the wrong value here.
           if [ "$(/usr/bin/uname -o)" = illumos ]; then
               _ostype=illumos
           fi
   
           # illumos systems have multi-arch userlands, and "uname -m" reports the
           # machine hardware name; e.g., "i86pc" on both 32- and 64-bit x86
           # systems.  Check for the native (widest) instruction set on the
           # running kernel:
           if [ "$_cputype" = i86pc ]; then
               _cputype="$(isainfo -n)"
           fi
       fi
   
       case "$_ostype" in
   
           Android)
               _ostype=linux-android
               ;;
   
           Linux)
               check_proc
               _ostype=unknown-linux-$_clibtype
               _bitness=$(get_bitness)
               ;;
   
           FreeBSD)
               _ostype=unknown-freebsd
               ;;
   
           NetBSD)
               _ostype=unknown-netbsd
               ;;
   
           DragonFly)
               _ostype=unknown-dragonfly
               ;;
   
           Darwin)
               _ostype=apple-darwin
               ;;
   
           illumos)
               _ostype=unknown-illumos
               ;;
   
           MINGW* | MSYS* | CYGWIN* | Windows_NT)
               _ostype=pc-windows-gnu
               ;;
   
           *)
               err "unrecognized OS type: $_ostype"
               ;;
   
       esac
   
       case "$_cputype" in
   
           i386 | i486 | i686 | i786 | x86)
               _cputype=i686
               ;;
   
           xscale | arm)
               _cputype=arm
               if [ "$_ostype" = "linux-android" ]; then
                   _ostype=linux-androideabi
               fi
               ;;
   
           armv6l)
               _cputype=arm
               if [ "$_ostype" = "linux-android" ]; then
                   _ostype=linux-androideabi
               else
                   _ostype="${_ostype}eabihf"
               fi
               ;;
   
           armv7l | armv8l)
               _cputype=armv7
               if [ "$_ostype" = "linux-android" ]; then
                   _ostype=linux-androideabi
               else
                   _ostype="${_ostype}eabihf"
               fi
               ;;
   
           aarch64 | arm64)
               _cputype=aarch64
               ;;
   
           x86_64 | x86-64 | x64 | amd64)
               _cputype=x86_64
               ;;
   
           mips)
               _cputype=$(get_endianness mips '' el)
               ;;
   
           mips64)
               if [ "$_bitness" -eq 64 ]; then
                   # only n64 ABI is supported for now
                   _ostype="${_ostype}abi64"
                   _cputype=$(get_endianness mips64 '' el)
               fi
               ;;
   
           ppc)
               _cputype=powerpc
               ;;
   
           ppc64)
               _cputype=powerpc64
               ;;
   
           ppc64le)
               _cputype=powerpc64le
               ;;
   
           s390x)
               _cputype=s390x
               ;;
           riscv64)
               _cputype=riscv64gc
               ;;
           loongarch64)
               _cputype=loongarch64
               ensure_loongarch_uapi
               ;;
           *)
               err "unknown CPU type: $_cputype"
   
       esac
   
       # Detect 64-bit linux with 32-bit userland
       if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
           case $_cputype in
               x86_64)
                   if [ -n "${RUSTUP_CPUTYPE:-}" ]; then
                       _cputype="$RUSTUP_CPUTYPE"
                   else {
                       # 32-bit executable for amd64 = x32
                       if is_host_amd64_elf; then {
                            echo "This host is running an x32 userland; as it stands, x32 support is poor," 1>&2
                            echo "and there isn't a native toolchain -- you will have to install" 1>&2
                            echo "multiarch compatibility with i686 and/or amd64, then select one" 1>&2
                            echo "by re-running this script with the RUSTUP_CPUTYPE environment variable" 1>&2
                            echo "set to i686 or x86_64, respectively." 1>&2
                            echo 1>&2
                            echo "You will be able to add an x32 target after installation by running" 1>&2
                            echo "  rustup target add x86_64-unknown-linux-gnux32" 1>&2
                            exit 1
                       }; else
                           _cputype=i686
                       fi
                   }; fi
                   ;;
               mips64)
                   _cputype=$(get_endianness mips '' el)
                   ;;
               powerpc64)
                   _cputype=powerpc
                   ;;
               aarch64)
                   _cputype=armv7
                   if [ "$_ostype" = "linux-android" ]; then
                       _ostype=linux-androideabi
                   else
                       _ostype="${_ostype}eabihf"
                   fi
                   ;;
               riscv64gc)
                   err "riscv64 with 32-bit userland unsupported"
                   ;;
           esac
       fi
   
       # Detect armv7 but without the CPU features Rust needs in that build,
       # and fall back to arm.
       # See https://github.com/rust-lang/rustup.rs/issues/587.
       if [ "$_ostype" = "unknown-linux-gnueabihf" ] && [ "$_cputype" = armv7 ]; then
           if ensure grep '^Features' /proc/cpuinfo | grep -E -q -v 'neon|simd'; then
               # At least one processor does not have NEON (which is asimd on armv8+).
               _cputype=arm
           fi
       fi
   
       _arch="${_cputype}-${_ostype}"
   
       RETVAL="$_arch"
   }
   
   say() {
       printf 'rustup: %s\n' "$1"
   }
   
   err() {
       say "$1" >&2
       exit 1
   }
   
   need_cmd() {
       if ! check_cmd "$1"; then
           err "need '$1' (command not found)"
       fi
   }
   
   check_cmd() {
       command -v "$1" > /dev/null 2>&1
   }
   
   assert_nz() {
       if [ -z "$1" ]; then err "assert_nz $2"; fi
   }
   
   # Run a command that should never fail. If the command fails execution
   # will immediately terminate with an error showing the failing
   # command.
   ensure() {
       if ! "$@"; then err "command failed: $*"; fi
   }
   
   # This is just for indicating that commands' results are being
   # intentionally ignored. Usually, because it's being executed
   # as part of error handling.
   ignore() {
       "$@"
   }
   
   # This wraps curl or wget. Try curl first, if not installed,
   # use wget instead.
   downloader() {
       # zsh does not split words by default, Required for curl retry arguments below.
       is_zsh && setopt local_options shwordsplit
   
       local _dld
       local _ciphersuites
       local _err
       local _status
       local _retry
       if check_cmd curl; then
           _dld=curl
       elif check_cmd wget; then
           _dld=wget
       else
           _dld='curl or wget' # to be used in error message of need_cmd
       fi
   
       if [ "$1" = --check ]; then
           need_cmd "$_dld"
       elif [ "$_dld" = curl ]; then
           check_curl_for_retry_support
           _retry="$RETVAL"
           get_ciphersuites_for_curl
           _ciphersuites="$RETVAL"
           if [ -n "$_ciphersuites" ]; then
               _err=$(curl $_retry --proto '=https' --tlsv1.2 --ciphers "$_ciphersuites" --silent --show-error --fail --location "$1" --output "$2" 2>&1)
               _status=$?
           else
               echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
               if ! check_help_for "$3" curl --proto --tlsv1.2; then
                   echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
                   _err=$(curl $_retry --silent --show-error --fail --location "$1" --output "$2" 2>&1)
                   _status=$?
               else
                   _err=$(curl $_retry --proto '=https' --tlsv1.2 --silent --show-error --fail --location "$1" --output "$2" 2>&1)
                   _status=$?
               fi
           fi
           if [ -n "$_err" ]; then
               echo "$_err" >&2
               if echo "$_err" | grep -q 404$; then
                   err "installer for platform '$3' not found, this may be unsupported"
               fi
           fi
           return $_status
       elif [ "$_dld" = wget ]; then
           if [ "$(wget -V 2>&1|head -2|tail -1|cut -f1 -d" ")" = "BusyBox" ]; then
               echo "Warning: using the BusyBox version of wget.  Not enforcing strong cipher suites for TLS or TLS v1.2, this is potentially less secure"
               _err=$(wget "$1" -O "$2" 2>&1)
               _status=$?
           else
               get_ciphersuites_for_wget
               _ciphersuites="$RETVAL"
               if [ -n "$_ciphersuites" ]; then
                   _err=$(wget --https-only --secure-protocol=TLSv1_2 --ciphers "$_ciphersuites" "$1" -O "$2" 2>&1)
                   _status=$?
               else
                   echo "Warning: Not enforcing strong cipher suites for TLS, this is potentially less secure"
                   if ! check_help_for "$3" wget --https-only --secure-protocol; then
                       echo "Warning: Not enforcing TLS v1.2, this is potentially less secure"
                       _err=$(wget "$1" -O "$2" 2>&1)
                       _status=$?
                   else
                       _err=$(wget --https-only --secure-protocol=TLSv1_2 "$1" -O "$2" 2>&1)
                       _status=$?
                   fi
               fi
           fi
           if [ -n "$_err" ]; then
               echo "$_err" >&2
               if echo "$_err" | grep -q ' 404 Not Found$'; then
                   err "installer for platform '$3' not found, this may be unsupported"
               fi
           fi
           return $_status
       else
           err "Unknown downloader"   # should not reach here
       fi
   }
   
   check_help_for() {
       local _arch
       local _cmd
       local _arg
       _arch="$1"
       shift
       _cmd="$1"
       shift
   
       local _category
       if "$_cmd" --help | grep -q 'For all options use the manual or "--help all".'; then
         _category="all"
       else
         _category=""
       fi
   
       case "$_arch" in
   
           *darwin*)
           if check_cmd sw_vers; then
               case $(sw_vers -productVersion) in
                   10.*)
                       # If we're running on macOS, older than 10.13, then we always
                       # fail to find these options to force fallback
                       if [ "$(sw_vers -productVersion | cut -d. -f2)" -lt 13 ]; then
                           # Older than 10.13
                           echo "Warning: Detected macOS platform older than 10.13"
                           return 1
                       fi
                       ;;
                   11.*)
                       # We assume Big Sur will be OK for now
                       ;;
                   *)
                       # Unknown product version, warn and continue
                       echo "Warning: Detected unknown macOS major version: $(sw_vers -productVersion)"
                       echo "Warning TLS capabilities detection may fail"
                       ;;
               esac
           fi
           ;;
   
       esac
   
       for _arg in "$@"; do
           if ! "$_cmd" --help "$_category" | grep -q -- "$_arg"; then
               return 1
           fi
       done
   
       true # not strictly needed
   }
   
   # Check if curl supports the --retry flag, then pass it to the curl invocation.
   check_curl_for_retry_support() {
       local _retry_supported=""
       # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
       if check_help_for "notspecified" "curl" "--retry"; then
           _retry_supported="--retry 3"
           if check_help_for "notspecified" "curl" "--continue-at"; then
               # "-C -" tells curl to automatically find where to resume the download when retrying.
               _retry_supported="--retry 3 -C -"
           fi
       fi
   
       RETVAL="$_retry_supported"
   }
   
   # Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
   # if support by local tools is detected. Detection currently supports these curl backends:
   # GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
   get_ciphersuites_for_curl() {
       if [ -n "${RUSTUP_TLS_CIPHERSUITES-}" ]; then
           # user specified custom cipher suites, assume they know what they're doing
           RETVAL="$RUSTUP_TLS_CIPHERSUITES"
           return
       fi
   
       local _openssl_syntax="no"
       local _gnutls_syntax="no"
       local _backend_supported="yes"
       if curl -V | grep -q ' OpenSSL/'; then
           _openssl_syntax="yes"
       elif curl -V | grep -iq ' LibreSSL/'; then
           _openssl_syntax="yes"
       elif curl -V | grep -iq ' BoringSSL/'; then
           _openssl_syntax="yes"
       elif curl -V | grep -iq ' GnuTLS/'; then
           _gnutls_syntax="yes"
       else
           _backend_supported="no"
       fi
   
       local _args_supported="no"
       if [ "$_backend_supported" = "yes" ]; then
           # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
           if check_help_for "notspecified" "curl" "--tlsv1.2" "--ciphers" "--proto"; then
               _args_supported="yes"
           fi
       fi
   
       local _cs=""
       if [ "$_args_supported" = "yes" ]; then
           if [ "$_openssl_syntax" = "yes" ]; then
               _cs=$(get_strong_ciphersuites_for "openssl")
           elif [ "$_gnutls_syntax" = "yes" ]; then
               _cs=$(get_strong_ciphersuites_for "gnutls")
           fi
       fi
   
       RETVAL="$_cs"
   }
   
   # Return cipher suite string specified by user, otherwise return strong TLS 1.2-1.3 cipher suites
   # if support by local tools is detected. Detection currently supports these wget backends:
   # GnuTLS and OpenSSL (possibly also LibreSSL and BoringSSL). Return value can be empty.
   get_ciphersuites_for_wget() {
       if [ -n "${RUSTUP_TLS_CIPHERSUITES-}" ]; then
           # user specified custom cipher suites, assume they know what they're doing
           RETVAL="$RUSTUP_TLS_CIPHERSUITES"
           return
       fi
   
       local _cs=""
       if wget -V | grep -q '\-DHAVE_LIBSSL'; then
           # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
           if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
               _cs=$(get_strong_ciphersuites_for "openssl")
           fi
       elif wget -V | grep -q '\-DHAVE_LIBGNUTLS'; then
           # "unspecified" is for arch, allows for possibility old OS using macports, homebrew, etc.
           if check_help_for "notspecified" "wget" "TLSv1_2" "--ciphers" "--https-only" "--secure-protocol"; then
               _cs=$(get_strong_ciphersuites_for "gnutls")
           fi
       fi
   
       RETVAL="$_cs"
   }
   
   # Return strong TLS 1.2-1.3 cipher suites in OpenSSL or GnuTLS syntax. TLS 1.2
   # excludes non-ECDHE and non-AEAD cipher suites. DHE is excluded due to bad
   # DH params often found on servers (see RFC 7919). Sequence matches or is
   # similar to Firefox 68 ESR with weak cipher suites disabled via about:config.
   # $1 must be openssl or gnutls.
   get_strong_ciphersuites_for() {
       if [ "$1" = "openssl" ]; then
           # OpenSSL is forgiving of unknown values, no problems with TLS 1.3 values on versions that don't support it yet.
           echo "TLS_AES_128_GCM_SHA256:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_256_GCM_SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384"
       elif [ "$1" = "gnutls" ]; then
           # GnuTLS isn't forgiving of unknown values, so this may require a GnuTLS version that supports TLS 1.3 even if wget doesn't.
           # Begin with SECURE128 (and higher) then remove/add to build cipher suites. Produces same 9 cipher suites as OpenSSL but in slightly different order.
           echo "SECURE128:-VERS-SSL3.0:-VERS-TLS1.0:-VERS-TLS1.1:-VERS-DTLS-ALL:-CIPHER-ALL:-MAC-ALL:-KX-ALL:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+AES-128-GCM:+CHACHA20-POLY1305:+AES-256-GCM"
       fi
   }
   
   main "$@" || exit 1
   

   上記テキストをファイルに保存して（ファイル名：sh.rustup.rs）、ターミナルから次のコマンドを実行する。

   cd "ファイルを保存したディレクトリ"
   . ./sh.rustup.rs
   

6. 

   @bdrcc

   Questioner

   more_horiz

   返信が遅くなりすみません！
   直近にいただいたコードを実行したところ、Rustがインストールできたようです！
   またその後の、仮想環境下でのFlexもインストールできました！
   お忙しいところ、解決方法を探っていただき、本当にありがとうございました！！

7. 

   @nak435

   more_horiz

   解決してよかったです ✌️

   よろしければ、当Q&Aをクローズしてください。