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install.sh
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#!/bin/sh
# shellcheck shell=dash
# This is just a little script that can be downloaded from the internet to
# install poetry. It just does platform detection, downloads the distribution
# and installs 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.
if [ "$KSH_VERSION" = 'Version JM 93t+ 2010-03-05' ]; then
# The version of ksh93 that ships with many illumos systems does not
# support the "local" extension. Print a message rather than fail in
# subtle ways later on:
echo 'this script does not work with this ksh93 version; please try bash!' >&2
exit 1
fi
set -u
_ansi_escapes_are_valid=false
if [ -t 2 ]; then
if [ "${TERM+set}" = 'set' ]; then
case "$TERM" in
xterm*|rxvt*|urxvt*|linux*|vt*)
_ansi_escapes_are_valid=true
;;
esac
fi
fi
POETRYBIN_REPO="${POETRYBIN_REPO:-gi0baro/poetry-bin}"
main() {
downloader --check
need_cmd uname
need_cmd mktemp
need_cmd mkdir
need_cmd rm
need_cmd rmdir
need_cmd tar
get_architecture || return 1
local _arch="$RETVAL"
assert_nz "$_arch" "arch"
local _dir
_dir="$(mktemp -d 2>/dev/null || ensure mktemp -d -t poetry-bin)"
local _path_prefix="/usr"
local _path_pre
local _path_local
local _path_dest
local _path_bin="$(get_binpath)"
if [ -z "$_path_bin" ]; then
err "Cannot resolve local path for installation"
fi
_path_pre="$(dirname "$_path_bin")"
_path_local="$_path_pre/poetry-bin-releases"
info 'checking lastest available release..'
local _latest=$(fetcher https://api.github.com/repos/$POETRYBIN_REPO/releases/latest | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
if [ -z $_latest ]; then
err "Cannot resolve latest release"
fi
info "downloading distribution $_latest.."
local _file="poetry-bin-$_latest-$_arch.tar.gz"
local _url="https://github.com/${POETRYBIN_REPO}/releases/download/${_latest}/${_file}"
ensure downloader "$_url" "$_dir/$_file" "$_arch"
_path_dest="$_path_local/$_latest"
info "installing distribution to $_path_dest.."
ignore rm -rf "$_path_dest"
ensure mkdir -p "$_path_dest"
ensure tar xzf "$_dir/$_file" --directory "$_path_dest"
ignore rm "$_path_bin/poetry"
ensure ln -s "$_path_dest/poetry" "$_path_bin/poetry"
ignore rm "$_dir/$_file"
ignore rmdir "$_dir"
info "correctly installed poetry to $_path_bin/poetry"
}
get_binpath() {
local _path_prefix="/usr"
echo "$PATH" | tr ':' '\n' | while read _bin_path; do
if echo "$_bin_path" | grep -q $_path_prefix; then
echo "$_bin_path"
break
fi
done
}
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
}
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
}
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 [ "$_ostype" = Darwin ] && [ "$_cputype" = i386 ]; then
# Darwin `uname -m` lies
if sysctl hw.optional.x86_64 | grep -q ': 1'; then
_cputype=x86_64
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 "$_ostype" in
Android)
_ostype=linux-android
;;
Linux)
_ostype=unknown-linux-$_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*)
_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
;;
*)
err "unknown CPU type: $_cputype"
esac
# Detect 64-bit linux with 32-bit userland
if [ "${_ostype}" = unknown-linux-gnu ] && [ "${_bitness}" -eq 32 ]; then
case $_cputype in
x86_64)
_cputype=i686
;;
mips64)
_cputype=$(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.
if [ "$_ostype" = "unknown-linux-gnueabihf" ] && [ "$_cputype" = armv7 ]; then
if ensure grep '^Features' /proc/cpuinfo | grep -q -v neon; then
# At least one processor does not have NEON.
_cputype=arm
fi
fi
_arch="${_cputype}-${_ostype}"
RETVAL="$_arch"
}
say() {
printf '%s\n' "$1"
}
err() {
say "$1" >&2
exit 1
}
info() {
if $_ansi_escapes_are_valid; then
printf "\33[1minfo:\33[0m $1\n" 1>&2
else
printf '%s\n' "info: $1" 1>&2
fi
}
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() {
local _dld
local _err
local _status
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 [ "$_dld" = curl ]; then
_err=$(curl --silent --show-error --fail --location "$1" --output "$2" 2>&1)
_status=$?
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
_err=$(wget "$1" -q -O "$2" 2>&1)
_status=$?
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
}
fetcher() {
local _dld
local _res
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 [ "$_dld" = curl ]; then
_res=$(curl --silent --show-error --fail --location "$1")
echo "$_res"
return
elif [ "$_dld" = wget ]; then
_res="$(wget "$1" -q -O -)"
echo "$_res"
return
else
err "Unknown fetcher" # should not reach here
fi
}
main "$@" || exit 1