69 lines
2.2 KiB
Bash
Executable File
69 lines
2.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# Set paths early (ephemeral self-hosted runners might reuse a runner)
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PATH="/nix/var/nix/profiles/per-user/$USER/profile/bin":"/nix/var/nix/profiles/default/bin":$PATH
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if type -p nix &>/dev/null ; then
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echo "Aborting: Nix is already installed at $(type -p nix)"
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exit
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fi
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# Configure Nix
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add_config() {
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echo "$1" | tee -a /tmp/nix.conf >/dev/null
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}
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# Set jobs to number of cores
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add_config "max-jobs = auto"
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# Allow binary caches for user
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add_config "trusted-users = root $USER"
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# Append extra nix configuration if provided
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if [[ $INPUT_EXTRA_NIX_CONFIG != "" ]]; then
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add_config "$INPUT_EXTRA_NIX_CONFIG"
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fi
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# Nix installer flags
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installer_options=(
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--no-channel-add
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--darwin-use-unencrypted-nix-store-volume
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--nix-extra-conf-file /tmp/nix.conf
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)
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# only use the nix-daemon settings if on darwin (which get ignored) or systemd is supported
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if [[ $OSTYPE =~ darwin || -e /run/systemd/system ]]; then
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installer_options+=(
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--daemon
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--daemon-user-count `python -c 'import multiprocessing as mp; print(mp.cpu_count() * 2)'`
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)
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else
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# "fix" the following error when running nix*
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# error: the group 'nixbld' specified in 'build-users-group' does not exist
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mkdir -m 0755 /etc/nix
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echo "build-users-group =" > /etc/nix/nix.conf
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fi
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if [[ $INPUT_INSTALL_OPTIONS != "" ]]; then
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IFS=' ' read -r -a extra_installer_options <<< $INPUT_INSTALL_OPTIONS
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installer_options=("${extra_installer_options[@]}" "${installer_options[@]}")
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fi
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echo "installer options: ${installer_options[@]}"
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sh <(curl --retry 5 --retry-connrefused -L "${INPUT_INSTALL_URL:-https://nixos.org/nix/install}") "${installer_options[@]}"
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if [[ $OSTYPE =~ darwin ]]; then
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# macOS needs certificates hints
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cert_file=/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt
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echo "NIX_SSL_CERT_FILE=$cert_file" >> "$GITHUB_ENV"
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export NIX_SSL_CERT_FILE=$cert_file
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sudo launchctl setenv NIX_SSL_CERT_FILE "$cert_file"
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fi
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# Set paths early (ephemeral self-hosted runners might reuse a runner)
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echo "/nix/var/nix/profiles/per-user/$USER/profile/bin" >> "$GITHUB_PATH"
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echo "/nix/var/nix/profiles/default/bin" >> "$GITHUB_PATH"
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if [[ $INPUT_NIX_PATH != "" ]]; then
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echo "NIX_PATH=${INPUT_NIX_PATH}" >> "$GITHUB_ENV"
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fi
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