76 lines
1.9 KiB
Plaintext
76 lines
1.9 KiB
Plaintext
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#!/bin/sh
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# safety subshell to avoid executing anything in case this script is not downloaded properly
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(
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die() {
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(>&2 printf "\\033[0;31m%s\\033[0m\\n" "$1")
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exit 2
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}
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edo()
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{
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printf "\\033[0;35m%s\\033[0m\\n" "$*"
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"$@" || exit 2
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}
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echo
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echo "Welcome to Haskell!"
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echo
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echo "This will download and install the Glasgow Haskell Compiler (GHC) for "
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echo "the Haskell programming language, and the Cabal build tool."
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echo
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echo "It will add the 'cabal', 'ghc', and 'ghcup' executables to bin directory "
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echo "located at: "
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echo
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echo " $HOME/.ghcup/bin"
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echo
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echo "and create the environment file $HOME/.ghcup/env"
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echo "which you should source in your ~/.bashrc or similar to get the required"
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echo "PATH components."
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echo
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if [ -z "${BOOTSTRAP_HASKELL_NONINTERACTIVE}" ] ; then
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echo "To proceed with the installation press enter, to cancel press ctrl-c."
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echo "Note that this script can be re-run at any given time."
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echo
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# Wait for user input to continue.
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# shellcheck disable=SC2034
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read -r answer </dev/tty
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fi
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edo mkdir -p "${HOME}"/.ghcup/bin
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if command -V "ghcup" >/dev/null 2>&1 ; then
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if [ -z "${BOOTSTRAP_HASKELL_NO_UPGRADE}" ] ; then
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edo ghcup upgrade
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fi
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else
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edo curl https://raw.githubusercontent.com/haskell/ghcup/master/ghcup > "${HOME}"/.ghcup/bin/ghcup
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edo chmod +x "${HOME}"/.ghcup/bin/ghcup
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cat <<-EOF > "${HOME}"/.ghcup/env || die "Failed to create env file"
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export PATH="\$HOME/.cabal/bin:\$HOME/.ghcup/bin:\$PATH"
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EOF
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# shellcheck disable=SC1090
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edo . "${HOME}"/.ghcup/env
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fi
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edo ghcup install
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edo ghcup set
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edo ghcup install-cabal
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edo cabal new-update
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edo cabal new-install --symlink-bindir="$HOME/.cabal/bin" cabal-install
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printf "\\033[0;35m%s\\033[0m\\n" ""
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printf "\\033[0;35m%s\\033[0m\\n" "Installation done!"
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printf "\\033[0;35m%s\\033[0m\\n" ""
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printf "\\033[0;35m%s\\033[0m\\n" "Don't forget to source $HOME/.ghcup/env in your ~/.bashrc or similar."
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printf "\\033[0;35m%s\\033[0m\\n" ""
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)
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