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niv/.github/actions/nix/install-nix
2020-07-06 14:46:34 +02:00

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#!/usr/bin/env bash
# vim: set ft=bash
# adapted from https://github.com/cachix/install-nix-action/blob/master/lib/install-nix.sh
set -euo pipefail
install_nix() {
echo "Installing Nix"
# Set jobs to number of cores
sudo sh -c 'echo max-jobs = auto >> /tmp/nix.conf'
# Allow binary caches for runner user
sudo sh -c 'echo trusted-users = root runner >> /tmp/nix.conf'
sh <(curl -L ${INPUT_INSTALL_URL:-https://nixos.org/nix/install}) \
--daemon --daemon-user-count 4 --nix-extra-conf-file /tmp/nix.conf --darwin-use-unencrypted-nix-store-volume --no-channel-add
if [[ $OSTYPE =~ darwin ]]; then
# Disable spotlight indexing of /nix to speed up performance
sudo mdutil -i off /nix
# macOS needs certificates hints
cert_file=/nix/var/nix/profiles/default/etc/ssl/certs/ca-bundle.crt
echo "::set-env name=NIX_SSL_CERT_FILE::$cert_file"
export NIX_SSL_CERT_FILE=$cert_file
sudo launchctl setenv NIX_SSL_CERT_FILE "$cert_file"
fi
# Set paths
echo "::add-path::/nix/var/nix/profiles/per-user/runner/profile/bin"
echo "::add-path::/nix/var/nix/profiles/default/bin"
. '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
}
install_cachix() {
echo "Installing cachix"
nix-env -iA cachix -f https://cachix.org/api/v1/install
echo "Setting up cachix"
cachix_cache="${GITHUB_REPOSITORY##*/}"
echo "Using cache '$cachix_cache' for '$GITHUB_REPOSITORY'"
cachix use "$cachix_cache"
script_path="$HOME/.local/bin/save-cache"
mkdir -p "$(dirname $script_path)"
}
save_cache() {
cachix_cache="${GITHUB_REPOSITORY##*/}"
echo "Using cache '$cachix_cache' for '$GITHUB_REPOSITORY'"
set +x
if [ -z "${CACHIX_SIGNING_KEY:-}" ] && [ -n "${INPUT_CACHIX_SIGNING_KEY:-}" ]; then
echo "CACHIX_SIGNING_KEY not set, but INPUT_CACHIX_SIGNING_KEY is present"
echo "setting CACHIX_SIGNING_KEY"
export CACHIX_SIGNING_KEY="$INPUT_CACHIX_SIGNING_KEY"
fi
if [ -n "${CACHIX_SIGNING_KEY:-}" ];
then
echo "CACHIX_SIGNING_KEY is set, uploading cache"
nix path-info --all | cachix push $cachix_cache
else
echo "CACHIX_SIGNING_KEY not set, not uploading cache"
fi
set -x
}
set -x
if [ "${INSTALL_NIX_WAS_RUN:-}" == "1" ]; then
save_cache
else
install_nix
install_cachix
echo "::set-env name=INSTALL_NIX_WAS_RUN::1"
fi