mirror of
https://github.com/cachix/install-nix-action.git
synced 2024-10-16 06:27:36 +00:00
6c5ba55bfd
The Nix installer produces a significant number of log messages, but usually those messages are not really interesting. Group those messages under a header, so that GitHub will keep them collapsed by default. (Usually log messages are collapsed under the step title anyway, but if this action is uses inside another composite action, there is no separate step title, therefore the whole Nix installer output is immediately visible when the log section for the outer composite action is expanded. Adding the group header fixes this problem.)
92 lines
2.7 KiB
Bash
Executable file
92 lines
2.7 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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if type -p nix &>/dev/null ; then
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echo "Aborting: Nix is already installed at $(type -p nix)"
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exit
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fi
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# GitHub command to put the following log messages into a group which is collapsed by default
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echo "::group::Installing Nix"
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# Create a temporary workdir
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workdir=$(mktemp -d)
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trap 'rm -rf "$workdir"' EXIT
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# Configure Nix
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add_config() {
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echo "$1" | tee -a "$workdir/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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if [[ ! $INPUT_EXTRA_NIX_CONFIG =~ "experimental-features" ]]; then
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add_config "experimental-features = nix-command flakes"
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fi
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# Nix installer flags
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installer_options=(
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--no-channel-add
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--darwin-use-unencrypted-nix-store-volume
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--nix-extra-conf-file "$workdir/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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add_config "build-users-group ="
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sudo mkdir -p /etc/nix
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sudo chmod 0755 /etc/nix
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sudo cp $workdir/nix.conf /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: ${installer_options[*]}"
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# There is --retry-on-errors, but only newer curl versions support that
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curl_retries=5
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while ! curl -sS -o "$workdir/install" -v --fail -L "${INPUT_INSTALL_URL:-https://nixos.org/nix/install}"
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do
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sleep 1
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((curl_retries--))
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if [[ $curl_retries -le 0 ]]; then
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echo "curl retries failed" >&2
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exit 1
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fi
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done
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sh "$workdir/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 "$cert_file"
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fi
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# Set paths
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echo "/nix/var/nix/profiles/default/bin" >> "$GITHUB_PATH"
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echo "/nix/var/nix/profiles/per-user/$USER/profile/bin" >> "$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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# Close the log message group which was opened above
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echo "::endgroup::"
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