ghcup-hs/bootstrap-haskell

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#!/bin/sh
# safety subshell to avoid executing anything in case this script is not downloaded properly
(
: "${GHCUP_INSTALL_BASE_PREFIX:=$HOME}"
die() {
(>&2 printf "\\033[0;31m%s\\033[0m\\n" "$1")
exit 2
}
edo()
{
"$@" || die "\"$*\" failed!"
}
eghcup() {
if [ -z "${BOOTSTRAP_HASKELL_VERBOSE}" ] ; then
edo ghcup "$@"
else
edo ghcup --verbose "$@"
fi
}
download_ghcup() {
_plat="$(uname -s)"
_arch=$(uname -m)
case "${_plat}" in
"linux"|"Linux")
case "${_arch}" in
x86_64|amd64)
_url=https://downloads.haskell.org/~ghcup/0.1.3/x86_64-linux-ghcup-0.1.3
;;
i*86)
_url=https://downloads.haskell.org/~ghcup/0.1.3/i386-linux-ghcup-0.1.3
;;
*) die "Unknown architecture: ${_arch}"
;;
esac
;;
"FreeBSD"|"freebsd")
case "${_arch}" in
x86_64|amd64)
;;
i*86)
die "i386 currently not supported!"
;;
*) die "Unknown architecture: ${_arch}"
;;
esac
_url=https://downloads.haskell.org/~ghcup/0.1.3/x86_64-portbld-freebsd-ghcup-0.1.3
;;
"Darwin"|"darwin")
case "${_arch}" in
x86_64|amd64)
;;
i*86)
die "i386 currently not supported!"
;;
*) die "Unknown architecture: ${_arch}"
;;
esac
_url=https://downloads.haskell.org/~ghcup/0.1.3/x86_64-apple-darwin-ghcup-0.1.3 ;;
*) die "Unknown platform: ${_plat}"
;;
esac
edo curl -Lf "${_url}" > "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/ghcup
unset _plat _arch _url
}
echo
echo "Welcome to Haskell!"
echo
echo "This will download and install the Glasgow Haskell Compiler (GHC)"
echo "and the Cabal build tool."
echo
echo "ghcup installs only into the following directory, which can be removed anytime:"
echo " $GHCUP_INSTALL_BASE_PREFIX/.ghcup"
echo
if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
printf "\\033[0;35m%s\\033[0m\\n" "Press ENTER to proceed"
printf "\\033[0;35m%s\\033[0m\\n" "or ctrl-c to abort."
printf "\\033[0;35m%s\\033[0m\\n" "Note that this script can be re-run at any given time."
echo
# Wait for user input to continue.
# shellcheck disable=SC2034
read -r answer </dev/tty
fi
edo mkdir -p "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin
if command -V "ghcup" >/dev/null 2>&1 ; then
if [ -z "${BOOTSTRAP_HASKELL_NO_UPGRADE}" ] ; then
eghcup upgrade
fi
else
download_ghcup
edo chmod +x "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/bin/ghcup
cat <<-EOF > "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/env || die "Failed to create env file"
export PATH="\$HOME/.cabal/bin:\${GHCUP_INSTALL_BASE_PREFIX:=\$HOME}/.ghcup/bin:\$PATH"
EOF
# shellcheck disable=SC1090
edo . "${GHCUP_INSTALL_BASE_PREFIX}"/.ghcup/env
eghcup upgrade
fi
echo
echo "$(ghcup tool-requirements)"
echo
if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
printf "\\033[0;35m%s\\033[0m\\n" "Press ENTER to proceed"
printf "\\033[0;35m%s\\033[0m\\n" "or ctrl-c to abort."
printf "\\033[0;35m%s\\033[0m\\n" "Installation may take a while."
echo
# Wait for user input to continue.
# shellcheck disable=SC2034
read -r answer </dev/tty
fi
eghcup --cache install
eghcup set
eghcup --cache install-cabal
edo cabal new-update
printf "\\033[0;35m%s\\033[0m\\n" ""
printf "\\033[0;35m%s\\033[0m\\n" "Installation done!"
printf "\\033[0;35m%s\\033[0m\\n" ""
if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
echo "In order to run ghc and cabal, you need to adjust your PATH variable."
echo "You may want to source '$GHCUP_INSTALL_BASE_PREFIX/.ghcup/env' in your shell"
echo "configuration to do so (e.g. ~/.bashrc)."
case $SHELL in
*/zsh) # login shell is zsh
GHCUP_PROFILE_FILE="$HOME/.zshrc"
MY_SHELL="zsh" ;;
*/bash) # login shell is bash
if [ -f "$HOME/.bashrc" ] ; then # bashrc is not sourced by default, so assume it isn't if file does not exist
GHCUP_PROFILE_FILE="$HOME/.bashrc"
else
GHCUP_PROFILE_FILE="$HOME/.bash_profile"
fi
MY_SHELL="bash" ;;
*/sh) # login shell is sh, but might be a symlink to bash or zsh
if [ -n "${BASH}" ] ; then
if [ -f "$HOME/.bashrc" ] ; then # bashrc is not sourced by default, so assume it isn't if file does not exist
GHCUP_PROFILE_FILE="$HOME/.bashrc"
else
GHCUP_PROFILE_FILE="$HOME/.bash_profile"
fi
MY_SHELL="bash"
elif [ -n "${ZSH_VERSION}" ] ; then
GHCUP_PROFILE_FILE="$HOME/.zshrc"
MY_SHELL="zsh"
else
exit 0
fi
;;
*) exit 0 ;;
esac
printf "\\033[0;35m%s\\033[0m\\n" ""
printf "\\033[0;35m%s\\033[0m\\n" "Detected ${MY_SHELL} shell on your system..."
printf "\\033[0;35m%s\\033[0m\\n" "If you want ghcup to automatically add the required PATH variable to \"${GHCUP_PROFILE_FILE}\""
printf "\\033[0;35m%s\\033[0m\\n" "answer with YES, otherwise with NO and press ENTER."
printf "\\033[0;35m%s\\033[0m\\n" ""
while true; do
read -r next_answer </dev/tty
case $next_answer in
[Yy]*)
echo "[ -f \"\${GHCUP_INSTALL_BASE_PREFIX:=\$HOME}/.ghcup/env\" ] && source \"\${GHCUP_INSTALL_BASE_PREFIX:=\$HOME}/.ghcup/env\"" >> "${GHCUP_PROFILE_FILE}"
printf "\\033[0;35m%s\\033[0m\\n" "OK! ${GHCUP_PROFILE_FILE} has been modified. Restart your terminal for the changes to take effect,"
printf "\\033[0;35m%s\\033[0m\\n" "or type \"source ${GHCUP_INSTALL_BASE_PREFIX}/.ghcup/env\" to apply them in your current terminal session."
exit 0;;
[Nn]*)
exit 0;;
*)
echo "Please type YES or NO and press enter.";;
esac
done
fi
)
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